Per Engstrand

Norlin, B. , An, S. , Granfeldt, T. , Krapohl, D. , Lai, B. , Rahman, H. , Zeeshan, F. & Engstrand, P. (2023). Visualisation of sulphur on single fibre level for pulping industry. Journal of Instrumentation, vol. 18: 01, pp. C01012-C01012.

Hedlund, A. , Björkqvist, O. , Nilsson, A. & Engstrand, P. (2022). Energy Optimization in a Paper Mill Enabled by a Three-Site Energy Cooperation. Energies, vol. 15: 8

Rahman, H. , An, S. , Norlin, B. , Persson, E. , Engstrand, P. , Zeeshan, F. , Granfeldt, T. , Slavicek, T. & et al. (2022). On-Site X-ray Fluorescence Spectrometry Measurement Strategy for Assessing the Sulfonation to Improve Chemimechanical Pulping Processes. ACS Omega, vol. 7: 51, pp. 48555-48563.

Berg, J. , Persson, E. , Hellstadius, B. , Edlund, H. , Granfeldt, T. , Lundfors, M. & Engstrand, P. (2022). Refining gentleness - a key to bulky CTMP. Nordic Pulp & Paper Research Journal, vol. 37: 2, pp. 349-355.

Joelsson, T. , Persson, E. , Pettersson, G. , Norgren, S. , Svedberg, A. & Engstrand, P. (2022). The impact of sulfonation and hot-pressing of low-energy high temperature chemi-thermomecanical pulp. Holzforschung, vol. 76: 5, pp. 463-472.

Mattsson, A. , Joelsson, T. , Miettinen, A. , Ketoja, J. A. , Pettersson, G. & Engstrand, P. (2021). Lignin inter-diffusion underlying improved mechanical performance of hot-pressed paper webs. Polymers, vol. 13: 15

Berg, J. , Hellstadius, B. , Lundfors, M. & Engstrand, P. (2021). Low-consistency refining of CTMP targeting high strength and bulk : effect of filling pattern and trial scale. Nordic Pulp & Paper Research Journal, vol. 36: 1, pp. 33-41.

Björk, E. , Vomhoff, H. & Engstrand, P. (2021). Production of fines from refined kraft pulp by fractionation with micro-perforated screens. Nordic Pulp & Paper Research Journal, vol. 36: 3, pp. 456-464.

Sund, J. , Sandberg, C. , Karlström, A. , Thungström, G. & Engstrand, P. (2021). The effect of process design on refiner pulp quality control performance. Nordic Pulp & Paper Research Journal, vol. 36: 4, pp. 594-607.

Joelsson, T. , Svedberg, A. , Norgren, S. , Pettersson, G. , Berg, J. , Garcia-Lindgren, C. & Engstrand, P. (2021). Unique steel belt press technology for high strength papers from high yield pulp. SN Applied Sciences, vol. 3: 5

Björk, E. , Bouveng, M. , Vomhoff, H. & Engstrand, P. (2021). Use of fines-enriched chemical pulp to increase CTMP strength. TAPPI Journal, vol. 20: 4, pp. 255-263.

Joelsson, T. , Pettersson, G. , Norgren, S. , Svedberg, A. , Höglund, H. & Engstrand, P. (2020). High strength paper from high yield pulps by means of hot-pressing. Nordic Pulp & Paper Research Journal, vol. 35: 2, pp. 195-204.

Joelsson, T. , Pettersson, G. , Norgren, S. , Svedberg, A. , Höglund, H. & Engstrand, P. (2020). Improved paper wet-strength by increasing lignin content and hot-pressing temperature. ,

Joelsson, T. , Pettersson, G. , Norgren, S. , Svedberg, A. , Höglund, H. & Engstrand, P. (2020). Improving paper wet strength via increased lignin content and hot-pressing temperature. TAPPI Journal, vol. 19: 10, pp. 487-499.

Cordova, A. , Afewerki, S. , Alimohammadzadeh, R. , Sanhueza, I. , Tai, C. , Osong, S. H. , Engstrand, P. & Ibrahem, I. (2019). A sustainable strategy for production and functionalization of nanocelluloses. Pure and Applied Chemistry, vol. 91: 5, pp. 865-874.

Sandberg, C. , Berg, J. & Engstrand, P. (2019). Low Consistency Refining Combined with Screen Fractionation : Reduction of Mechanical Pulping Process Complexity. BioResources, vol. 14: 1, pp. 882-894.

Rahman, H. , Engstrand, P. , Sandström, P. & Sjöstrand, B. (2018). Dewatering properties of low grammage handsheets softwood kraft pulps modified to minimize the need for refining. Nordic Pulp & Paper Research Journal, vol. 33: 3, pp. 397-403.

Sandberg, C. , Nelsson, E. , Engberg, B. A. , Berg, J. & Engstrand, P. (2018). Effects of chip pretreatment and feeding segments on specific energy and pulp quality in TMP production. Nordic Pulp & Paper Research Journal, vol. 33: 3, pp. 448-459.

Sandberg, C. , Berg, J. & Engstrand, P. (2017). Low consistency refining of mechanical pulp - system design. TAPPI Journal, vol. 16: 7, pp. 419-429.

Nelsson, E. , Paulsson, M. , Sandberg, C. , Svensson-Rundlöf, E. & Engstrand, P. (2017). Low dosage sulfite pretreatment at different refining temperatures in mill scale TMP production. Nordic Pulp & Paper Research Journal, vol. 32: 1, pp. 59-69.

Sandberg, C. , Berg, J. & Engstrand, P. (2017). Mill evaluation of an intensified mechanical pulping process. Nordic Pulp & Paper Research Journal, vol. 32: 2, pp. 204-210.

Sandberg, C. , Berg, J. & Engstrand, P. (2017). Process intensification in mechanical pulping. Nordic Pulp & Paper Research Journal, vol. 32: 4, pp. 615-622.

Afewerki, S. , Alimohammadzadeh, R. , Osong, S. H. , Tai, C. , Engstrand, P. & Cordova, A. (2017). Sustainable Design for the Direct Fabrication and Highly Versatile Functionalization of Nanocelluloses. Global Challenges, vol. 1: 7

Rahman, H. , Lindström, M. E. , Sandström, P. , Salmen, L. & Engstrand, P. (2017). The effect of increased pulp yield using additives in the softwood kraft cook on the physical properties of low-grammage handsheets. Nordic Pulp & Paper Research Journal, vol. 32: 3, pp. 317-323.

Osong, S. H. , Dahlström, C. , Forsberg, S. , Andres, B. , Engstrand, P. , Norgren, S. & Engström, A. (2016). Nanofibrillated cellulose/nanographite composite films. Cellulose, vol. 23: 4, pp. 2487-2500.

Osong, S. H. , Norgren, S. , Engstrand, P. , Lundberg, M. , Reza, M. & Tapani, V. (2016). Qualitative evaluation of microfibrillated cellulose usingthe crill method and some aspects of microscopy. Cellulose, vol. 23: 6, pp. 3611-3624.

Göransson, K. , Söderlind, U. , Engstrand, P. & Zhang, W. (2015). An experimental study on catalytic bed materials in a biomass dual fluidised bed gasifier. Renewable energy, vol. 81, pp. 251-261.

Zhang, W. , He, J. , Engstrand, P. & Björkqvist, O. (2015). Economic evaluation on bio-synthetic natural gas production integrated in a thermomechanical pulp mill. Energies, vol. 8: 11, pp. 12795-12809.

Göransson, K. , Söderlind, U. , Henschel, T. , Engstrand, P. & Zhang, W. (2015). Internal tar/CH₄reforming in a biomass dual fluidised bed gasifier.. Biomass Conversion and Biorefinery, vol. 5, pp. 355-366.

Nelsson, E. , Sandberg, C. , Svensson-Rundlöf, E. , Engstrand, P. , Fernando, D. & Daniel, G. (2015). Low dosage sulfite pretreatment in a modern TMP-line. Nordic Pulp & Paper Research Journal, vol. 30: 4, pp. 591-598.

Berg, J. , Sandberg, C. , Engberg, B. A. & Engstrand, P. (2015). Low-consistency refining of mechanical pulp in the light of forces on fibres. Nordic Pulp & Paper Research Journal, vol. 30: 2, pp. 225-229.

Walter, K. , Paulsson, M. & Engstrand, P. (2014). Acid Hydrogen Peroxide Treatment of Norway Spruce TMP : The Effect of an Extended pH Range when Catalyzed by Free Ferrous and Free or EDG/EDTA-Chelated Ferric Ions. Journal of wood chemistry and technology, vol. 34: 2, pp. 135-155.

Osong, S. H. , Norgren, S. , Engstrand, P. , Lundberg, M. & Hansen, P. (2014). Crill : A novel technique to characterize nano-ligno-cellulose. Nordic Pulp & Paper Research Journal, vol. 29: 2, pp. 190-194.

Osong, S. H. , Norgren, S. & Engstrand, P. (2014). Paper strength improvement by inclusion of nano-ligno-cellulose to Chemi-thermomechanical pulp. Nordic Pulp & Paper Research Journal, vol. 29: 2, pp. 309-316.

Enberg, S. , Rundlöf, M. , Paulsson, M. , Axelsson, P. , Eriksen, O. & Engstrand, P. (2014). Some causes of formation of colour during storage of hydrogen-peroxide bleached Norway spruce mechanical pulp. Nordic Pulp & Paper Research Journal, vol. 29: 2, pp. 356-366.

Karlsson, A. , Paulsson, M. , Engstrand, P. & Hedenström, E. (2014). Strategies to reduce heat-induced darkening for enhanced bleachability of mechanical pulps. Appita journal, vol. 67: 1, pp. 50-57.

Enberg, S. , Rundlöf, M. , Paulsson, M. , Axelsson, P. , Eriksen, O. & Engstrand, P. (2014). The influence of process waters on optical properties during storage of hydrogen-peroxide bleached Norway spruce mechanical pulp. Nordic Pulp & Paper Research Journal, vol. 29: 2, pp. 344-355.

Osong, S. H. , Norgren, S. & Engstrand, P. (2013). An approach to produce nano-ligno-cellulose from mechanical pulp fine materials. Nordic Pulp & Paper Research Journal, vol. 28: 4, pp. 472-479.

Fjellström, H. , Engstrand, P. & Htun, M. (2013). ON THE RELATIONSHIP BETWEEN WOOD FIBRE WALL SWELLING, CHARGED GROUPS, AND DELAMINATION DURING REFINING. J-FOR-JOURNAL OF SCIENCE & TECHNOLOGY FOR FOREST PRODUCTS AND PROCESSES, vol. 3: 4, pp. 30-34.

Fjellström, H. , Engstrand, P. & Htun, M. (2013). On the relationship between wood fibre wall swelling, charged groups, and delamination during refining. Journal of Science & Technology for Forest Products and Processes, vol. 3: 4, pp. 30-34.

He, J. , Engstrand, P. , Björkqvist, O. & Zhang, W. (2013). Techno-economic evaluation of a mechanical pulp mill with gasification. Nordic Pulp & Paper Research Journal, vol. 28: 3, pp. 349-357.

Andersson, S. , Sandberg, C. & Engstrand, P. (2012). Comparison of mechanical pulps from two stage HC single disc and HC double disc - LC refining. Appita journal, vol. 65: 1, pp. 57-62.

Andersson, S. , Sandberg, C. & Engstrand, P. (2012). Effect of long fibre concentration on low consistency refining of mechanical pulp. Nordic Pulp & Paper Research Journal, vol. 27: 4, pp. 702-706.

Hellström, L. , Carlberg, T. , Engstrand, P. , Gradin, P. & Gregersen, Ø. (2012). Evaluation Of Collimated Chipping Technology For Reducing Energy Consumption In Mechanical Pulping. Journal of Science & Technology for Forest Products and Processes, vol. 2: 3, pp. 6-9.

Gorski, D. , Johansson, L. & Engstrand, P. (2012). Refiner bleaching in a peroxide-based ATMP process compared with conventional bleaching. Holzforschung, vol. 66: 3, pp. 275-281.

Fernando, D. , Muhic, D. , Engstrand, P. & Daniel, G. (2012). Surface and internal micro/ultrastructure of TMP fibres produced during high-intensity refining elucidate the development of pulp and paper properties. Holzforschung, vol. 66: 4, pp. 467-475.

Andersson, S. , Sandberg, C. & Engstrand, P. (2012). The effect of rotor position on pulp properties in a two-zoned low consistency refiner. Nordic Pulp & Paper Research Journal, vol. 27: 3, pp. 525-530.

Muhic, D. , Huhtanen, J. , Sundström, L. , Sandberg, C. , Ullmar, M. , Engstrand, P. & Vuorio, P. (2011). Energy efficiency in double disc refining. Influence of intensity by segment design. Nordic Pulp & Paper Research Journal, vol. 26: 3, pp. 224-231.

Fernando, D. , Muhic, D. , Engstrand, P. & Daniel, G. (2011). Fundamental understanding of pulp property development under different thermomechanical pulp refining conditions as observed by a new Simons' staining method and SEM observation of the ultrastructure of fibre surfaces. Holzforschung, vol. 65: 6, pp. 777-786.

Gorski, D. , Mörseburg, K. , Axelsson, P. & Engstrand, P. (2011). Peroxide-based ATMP refining of spruce : energy efficiency, fibre properties and pulp quality. Nordic Pulp & Paper Research Journal, vol. 26: 1, pp. 47-63.

Hellström, L. , Gradin, P. , Engstrand, P. & Gregersen, Ø. (2011). Properties of wood chips for thermomechanical pulp (TMP) production as a function of spout angle. Holzforschung, vol. 65: 6, pp. 805-809.

Björkqvist, O. , Engstrand, P. , Htun, M. & Norgren, M. (2010). FORE – Ett nytt industrikombinat baserat på mekaniska massaprocesser. Svensk papperstidning, Nordisk cellulosa, : 2, pp. 24-25.

Muhic, D. , Sundström, L. , Sandberg, C. , Ullmar, M. & Engstrand, P. (2010). Influence of temperature on energy efficiency in double disc chip refining. Nordic Pulp & Paper Research Journal, vol. 25: 4, pp. 420-427.

Gorski, D. , Engstrand, P. , Hill, J. , Axelsson, P. & Johansson, L. (2010). Mg(OH)(2)-based hydrogen peroxide refiner bleaching: influence of extractives content in dilution water on pulp properties and energy efficiency. Appita journal, vol. 63: 3, pp. 218-225.

Sikter, D. , Karlström, A. , Sandberg, C. & Engstrand, P. (2008). Economic perspectives on quality control in TMP refining processes. Nordic Pulp & Paper Research Journal, vol. 23: 3, pp. 305-314.

Nelsson, E. , Sandberg, C. , Svensson-Rundlöf, E. , Muhic, D. , Engberg, B. A. & Engstrand, P. (). Substantially improved energy efficiency in mechanical pulping by new feeding segment design and low dosage sulfonation in mill scale. ,

Articles, reviews/surveys

Pettersson, G. , Norgren, S. , Engstrand, P. , Rundlöf, M. & Höglund, H. (2021). Aspects on bond strength in sheet structures from TMP and CTMP - a review. Nordic Pulp & Paper Research Journal, vol. 36: 2, pp. 177-213.

Osong, S. H. , Norgren, S. & Engstrand, P. (2016). Processing of wood-based microfibrillated cellulose and nanofibrillated cellulose, and applications relating to papermaking: a review. Cellulose, vol. 23: 1, pp. 93-123.

Gorski, D. , Hill, J. , Engstrand, P. & Johansson, L. (2010). Review: Reduction of energy consumption in TMP refining through mechanical pre-treatment of wood chips. Nordic Pulp & Paper Research Journal, vol. 25: 2, pp. 156-161.

Chapters in books

Mattsson, A. , Joelsson, T. , Pettersson, G. , Ketoja, J. , Mietinen, A. & Engstrand, P. (2023). Lignin Inter-Diffusion Underlying Improved Mechanical Performance of Hot-Pressed Paper Webs. In Mechanical Performance of Sustainable Bio-Based Compounds. Basel : MDPI. pp. 213-228.

Engstrand, P. (2022). Produkter från växande skogar ersätter fossilbaserade material. In Skogens värden : forskares reflektioner. Sundsvall : Mittuniversitetet. pp. 154-155.

Engstrand, P. & Johansson, B. (2009). Paper recycling. In Pulping Chemistry and Technology. Walter de Gruyter (Pulp and Paper Chemistry and Technology). pp. 391-427.

Conference papers

Rahman, H. , Eyob, F. K. , Norlin, B. & Engstrand, P. (2023). Improved CTMP impregnation by the use of X-ray fluorescence measurements. Paper presented at the Treesearch Insight Conference, Lund University and MAXIV,24-25 May 2023, Lund, Sweden.

Rahman, H. , An, S. , Norlin, B. , Persson, E. , Engstrand, P. & Granfeldt, T. (2022). Characterization of impregnation depth in wood fibers related manufacturing of advanced fiber materials replacing fossil-based materials. In Proceedings International mechanical Pulping Conference.. pp. 162--165.

Sund, J. , Sandberg, C. , Thungström, G. & Engstrand, P. (2022). Continuous online fibre analysis enables improved pulp quality estimation and control. In Proceedings of the International Mechanical Pulping Conference.. pp. 99--106.

Rahman, H. , Engstrand, P. , Persson, E. , An, S. , Norlin, B. , Zeeshan, F. & Granfeldt, T. (2022). Development of improved CTMP with even sulphonate distribution at fibre level using XRF analysis. In Transactions of the 17th Fundamental Research Symposium held in Cambridge: August/September 2022 : Volume 1.. pp. 3--11.

Rahman, H. , Engstrand, P. , Persson, E. , Siwen, A. , Norlin, B. , Zeeshan, F. & Granfeldt, T. (2022). Development of improved CTMP with even sulphonate distribution at fibre level using XRF analysis : Discussion contributions. In Transactions of the 17th Fundamental Research Symposium held in Cambridge: August/September 2022 : Volume 2. Oxfordshire : . pp. 579--584.

Joelsson, T. , Sandberg, C. , Norgren, S. , Alamin, I. & Engstrand, P. (2022). Fibre morphology affects the bonding and densification of hot-pressed thermomechanical pulp-based paper. In Proceedings of the International Mechanical Pulping Conference.. pp. 142--148.

Alimohammadzadeh, R. , Cordova, A. , Abbaszad Rafi, A. , Persson, E. , Marksted, K. , Hilden, L. & Engstrand, P. (2022). Improving the mechanical properties of CTMP fibers by combining synergistic organocatalytic/polyelectrolyte complex surface engineering with sulfite pretreatment. In Proceedings of the International Mechanical Pulping Conference.. pp. 149-

Joelsson, T. , Mattsson, A. , Ketoja, J. A. , Pettersson, G. & Engstrand, P. (2022). Lignin inter-diffusion - a mechanism behind improved wet strength. In Transactions of the 17th Fundamental Research Symposium. Cambridge : . pp. 105--118.

Pettersson, G. , Svedberg, A. , Norgren, S. & Engstrand, P. (2022). Manufacturing of paper with high wetstrength from CTMP and high yield NSK by combining sizing and wet strength additives with hot-pressing. In Proceedings of the International Mechanical Pulping Conference.. pp. 109--113.

Rahman, H. , An, S. , Norlin, B. , Persson, E. , Engstrand, P. , Pettersson, G. & Granfeldt, T. (2022). Measurement of S and Na distribution in impregnated wood chips by ED-XRF to improve CTMP process efficiency and product properties. Paper presented at the 16th European Workshop on Lignocellulosics and Pulp (EWLP), Gothenburg, Sweden, 27 June- 1 July, 2022

Abdulgadir, A. , Norgren, S. , Persson, J. & Engstrand, P. (2022). Performance Simulation of a Composite Filter Material Containing Mechanical Pulp Fibers, Microfibrillated Cellulose, and Cellulose Nanofibers. In Proceedings of the International Mechanical Pulping Conference.. pp. 160-

Persson, E. , Engstrand, P. , Granfeldt, T. , Norgren, S. , Edlund, H. & Johansson, M. (2022). Very Low Energy High Yield Pulping. In Proceedings of the International Mechanical Pulping Conference.. pp. 41--46.

Ferritsius, R. , Moberg, A. , Hallgren, H. , Pettersson, G. , Rundlöf, M. , Engstrand, P. & Engberg, B. A. (2022). Water Absorption and Wet Strength in Hot-pressed Paper. In Proceedings of the International Mechanical Pulping Conference.. pp. 168--170.

Rahman, H. , Engstrand, P. , An, S. , Norlin, B. , Persson, E. & Zeeshan, F. (2021). Improve the competitive advantages of pulp fiber-based products over fossil-based materials. In Accelerating the progress towards the 2030 SDGs in times of crisis. Östersund : . pp. 2133--2145.

Rahman, H. , An, S. , Norlin, B. , Persson, E. & Engstrand, P. (2021). Measurement of S and Na distribution in impregnated wood chip by XRF. In TAPPICon Virtual 2021.. pp. 547--553.

Joelsson, T. , Svedberg, A. , Norgren, S. , Pettersson, G. , Berg, J. , Garcia-Lindgren, C. & Engstrand, P. (2021). Unique steel belt press technology for development of high strength papers from HYP. In TAPPICon Virtual 2021.. pp. 523--531.

Engstrand, P. , Ferritsius, R. , Rundlöf, M. & Paulsson, M. (2019). Decrease in strengthalong a process line for SC paper. In Fundamental Mechanical Pulp Research Seminar, FMPRS2019, Norrköping, SwedenArranged by Mid Sweden University in cooperatrion with Holmen AB, Valmet AB, AF AB and Treesearch..

Joelsson, T. , Pettersson, G. , Norgren, S. , Svedberg, A. , Höglund, H. & Engstrand, P. (2019). Improving paper wet-strength by means hot-pressing and increased lignin content in pulp fibers. In Paper Conference and Trade Show, PaperCon 2019.. pp. 704--713.

Rahman, H. , An, S. , Norlin, B. , Fröjdh, C. , Persson, E. & Engstrand, P. (2019). Maximized wood chip impregnation efficiency validated by new miniaturized X-ray fluorescence techniques. Paper presented at the 11th Fundamental Mechanical Pulp Research Seminar, Norrköping, Sweden, April 2-4, 2019

Rahman, H. & Engstrand, P. (2019). Modification of Softwood Kraft Pulp for Improved Tissue Paper. In TAPPI PaperCon Conference, Indianapolis, USA, May 5-8, 2019.. pp. 714--719.

Samuelsson, T. , Pettersson, G. , Norgren, S. , Svedberg, A. , Höglund, H. & Engstrand, P. (2018). Development of strong and water resistant packaging materials from high yield pulps – fundamental aspects. In IMPC 2018. Trondheim, Norway :

Nordin, T. , Svedberg, A. , Norgren, S. , Pettersson, G. & Engstrand, P. (2018). Industrially Relevant In-situ Production Of High Yield Pulp Based Nanocellulose Materials Optimized To Improve Strength In Packaging And Printing Papers : A Comparison Between CMC And MFC As The Anionic Component In Layer-by-Layer Technology. In IMPC 2018. Trondheim, Norway :

Sandberg, C. , Berg, J. & Engstrand, P. (2018). LC refining combined with screen fractionation – Reduction of system complexity for mechanical pulping. In IMPC 2018. Trondheim, Norway :

Ferritsius, O. , Ferritsius, R. , Rundlöf, M. , Engberg, B. A. & Engstrand, P. (2018). The Independent State of Fibres in Relation to the Mechanical Pulping World. In IMPC 2018. Trondheim, Norway :

Pettersson, G. , Höglund, H. , Norgren, S. , Engstrand, P. , Peng, F. , Granfeldt, T. , Bergström, J. & Joelsson, T. (2018). Upgrading the strength properties of sheets from hardwood high yield pulps. In Pan Pacific Fibre Value Chain Conference 2018, Proceedings.. pp. 142--147.

Engstrand, P. (2016). Energy efficient mechanical pulping – summary of the Scandinavian industry initiative research work 2011 - 2015. In 2016 International Mechanical Pulping Conference, Jacksonville, Florida, USA September 28-30, 2016 : SESSION 11: INDUSTRY INITIATIVE FOR ENERGY REDUCTION. Georgia 30092 USA : . pp. 288--303.

Engstrand, P. , Gradin, P. , Hellström, L. , Carlberg, T. , Sandström, P. , Liden, J. , Söderberg, M. & Mats, E. (2016). Improved refining energy efficiency in thermo-mechanical pulping by means of collimated wood chipping – from solid mechanics to full scale evaluation. In PaperWeek Canada 2016 Conference February 1 to 5, 2016, Montreal : Technical Track Program.

Pettersson, G. , Norgren, S. , Höglund, H. & Engstrand, P. (2016). Low energy CTMP in strong and bulky paperboard plies. In Paper Conference and Trade Show, PaperCon 2016.. pp. 556--564.

Nelsson, E. , Sandberg, C. , Svensson-Rundlöf, E. , Paulsson, M. , Granfeldt, T. , Engberg, B. & Engstrand, P. (2016). Mill scale production of TMP with double disk refining-The effects of a mild sulfonation, atmospheric preheating and refining temperatures. In International Mechanical Pulping Conference 2016, IMPC 2016.. pp. 249--259.

Osong, S. H. , Norgren, S. , Pettersson, G. , Engstrand, P. , Còrdova, A. , Afewerki, S. & Alimohammadzadeh, R. (2016). Processing of nanocellulose and applications relating to CTMP-based paperboard and foams. In International Mechanical Pulping Conference 2016, IMPC 2016.. pp. 87--93.

Karlström, A. & Engstrand, P. (2016). Refining efficiency for future CTIVIP and TMP systems co-optimizing fundamental wood material knowledge with a soft sensor control approach. In International Mechanical Pulping Conference 2016, IMPC 2016.. pp. 304--316.

Sandberg, C. , Engstrand, P. & Berg, J. (2016). System Aspects on Low Consistency Refining of Mechanical Pulp. In TAPPI 2016 International Mechanical Pulping Conference (IMPC).. pp. 485--495.

Henshaw Osong, S. , Dahlström, C. , Forsberg, S. , Andres, B. , Engstrand, P. , Norgren, S. , Olin, H. & Engström, A. (2015). Development of CTMP-based nanofibrillated Cellulose /nanographite composites for paper applications. Paper presented at the 9th International Fundamental Mechanical Pulp Research Seminar, 19-20May, Trondheim, Norway

Logenius, L. , Fjellström, H. & Engstrand, P. (2014). A sustainable analysis of sulphonic acid content in CTMP pulps. In International Mechanical Pulping Conference, IMPC 2014, part of PulPaper 2014 Conference. Espoo :

Walter, K. , Paulsson, M. & Engstrand, P. (2014). Acid hydrogen peroxide treatment of Norway spruce TMP : The effect of chelated ferric ions. In International Mechanical Pulping Conference, IMPC 2014.

He, J. , Engstrand, P. & Zhang, W. (2014). Bio-SNG production in a TMP Mill in comparison with BIGCC. In Energy Procedia.. pp. 2894--2897.

Karlström, A. , Hill, J. , Ferritsius, O. , Ferritsius, R. & Engstrand, P. (2014). Can we increase the proportion of electrical energy into fibre development in existing HC-refiners?. In International Mechanical Pulping Conference, IMPC 2014.

Osong, S. H. , Norgren, S. , Engstrand, P. , Lundberg, M. & Hansen, P. (2014). Development of nano-ligno-cellulose produced from mechanical pulp. In International Mechanical Pulping Conference, IMPC 2014.

Nelsson, E. , Sandberg, C. , Svensson-Rundlöf, E. , Muhic, D. , Rohdén, L. , A. Engberg, B. & Engstrand, P. (2014). Improved energy efficiency in thermomechanical pulping through co-optimixation of intensity by segment design and wood softening by sulfonation. In International mechanical pulping conference IMPC 2014.

Nelsson, E. , Sandberq, C. , Svensson-Rundlöf, E. , Muhic, D. , Rohden, L. , Engberg, B. A. & Engstrand, P. (2014). Improved energy efficiency in thermomechanical pulping through co-optimization of intensity by segment design and wood softening by sulfonation. In International Mechanical Pulping Conference, IMPC 2014, part of PulPaper 2014 Conference.

Göransson, K. , Söderlind, U. , Henschel, T. , Engstrand, P. & Zhang, W. (2014). Internal tar/CH₄ reforming in a biomass dual fluidised bed gasifier. In Proceeding of 4th International Symposium on Gasification and its Applications.

Berg, J. , Sandberg, C. , Engberg, B. & Engstrand, P. (2014). LC Refining Intensity In The Light Of Forces On Fibres. In International Mechanical Pulping Conference, IMPC 2014. Espoo :

Engberg, B. , Logenius, L. & Engstrand, P. (2014). Mechanical properties of sulphonated wood in relation to wing refiner properties. In International Mechanical Pulping Conference, IMPC 2014. Espoo :

Osong, S. H. , Norgren, S. & Engstrand, P. (2014). Recent developments in nano-ligno-cellulose production and the crill characterization technique. In TAPPI International Conference on Nanotechnology for Renewable Materials 2014.. pp. 193--205.

Osong, S. H. , Engstrand, P. & Norgren, S. (2013). Mechanical Properties of high-yield pulp handsheets, as affected by blends of Nano-ligno-cellulose. Paper presented at the 2013 TAPPI International Conference on Nanotechnology for Renewable Materials, Stockholm, Sweden , 24-27 June 2013.

Logenius, L. , Engberg, B. A. , Fjellström, H. & Engstrand, P. (2013). Mechanical Properties of Sulphonated Spruce Wood. Paper presented at the 8th Fundamental mechanical pulping research seminar

Logenius, L. , Engberg, B. A. , Nelsson, E. & Engstrand, P. (2013). Mechanical testing methods for evaluation of the mechanical properties of sulphonated wood. Paper presented at the The 17th International Symposium on Wood, Fiber and Pulping Chemistry; Vancouver, Canada; 12-14 June 2013

Osong, S. H. , Norgren, S. & Engstrand, P. (2013). Nano-ligno-cellulose as strength enhancer in handsheets. Paper presented at the Marcus Wallenberg Prize (MWP 2013) - Young Researchers' Programme, Stockhom , Sweden, 23-24 Sept 2013.

Osong, S. H. , Norgren, S. & Engstrand, P. (2013). Nano-ligno-cellulose from mechanical pulp fines. Paper presented at the European Forest Products Doctoral Symposium 2013

Osong, S. H. , Engstrand, P. & Norgren, S. (2013). New Products based on Mechanical Pulps : Nano-ligno-cellulose (NLC). Paper presented at the 8th International Fundamental Mechanical Pulp Research Seminar, Åre, Sweden, 29-31 Jan, 2013.

Fjellström, H. , Engstrand, P. & Htun, M. (2013). On the relationship between charged groups, chemical environment and delamination during refining.. Paper presented at the 8th International Fundamental Mechanical Pulp Research Seminar (IFMPRS), Åre, Sweden, Jan 29-31, 2013

Osong, S. H. , Engstrand, P. & Norgren, S. (2012). A New Concept to Produce Nano-ligno-cellulose Materials by Means of High Pressure Homogenization. Paper presented at the 3rd International Cellulose Conference (ICC 2012), Oct 10-12, Sapporo, Japan.

Fjellström, H. , Engstrand, P. & Htun, M. (2012). Aspects of fibre wall swelling in high-yield pulp.. In PROCEEDING OF THE 4TH INTERNATIONAL CONFERENCE ON PULPING, PAPERMAKING AND BIOTECHNOLOGY (ICPPB '12), VOLS. I AND II.. pp. 1183--1186.

Hellström, L. , Carlberg, T. , Engstrand, P. , Gradin, P. & Gregersen, Ø. (2011). Collimated chipping technology in order to reduce the energy consumption in mechanical pulping. In Proceeding for International Mechanical Pulping Conference, Xi'an, P.R. of China.. pp. 457--460.

Engstrand, P. (2011). FILLING THE GAP – IMPROVED ENERGYEFFICIENCY AND QUALITY STABILITYIN MECHANICAL PULP REFINING. Paper presented at the International Mechanical Pulping Conference 2011, Xian China

Logenius, L. , Engstrand, P. , Karlström, A. & Paulsson, M. (2011). Improved hydrogen peroxide bleaching of mechanical pulps using carbon dioxide in combination with sodium and magnesium based alkali sources. In 16th International Symposium on Wood, Fiber and Pulping Chemistry - Proceedings, ISWFPC.. pp. 741--745.

Fjellström, H. , Engstrand, P. , Granfeldt, T. & Logenius, L. (2011). Predicting CTMP bleachability using wood shavings. In 16th International Symposium on Wood, Fiber and Pulping Chemistry - Proceedings, ISWFPC.. pp. 613--616.

Muhic, D. , Huhtanen, J. , Sundström, L. , Sandberg, C. , Ullmar, M. & Engstrand, P. (2010). Energy efficiency in double disc chip refining. Influence of intensity by segment design. In Proceedings of the 7th InternationalFundamental Mechanical Pulp Research Seminar, Nanjing, China (2010).. pp. 103--111.

Hellström, L. & Engstrand, P. (2010). The effect on the energy consumption in mechanical pulping of different wood chipping conditions. In Proceedings of 7^th International Seminar of Fundamental Mechanical Pulp Research (IFMPRS 2010).. pp. 124--126.

Björkqvist, O. , Engstrand, P. & Fridén, H. (2009). Concepts of Steam Recovery from LC-Refining by Increase Temperature. In Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009.. pp. 190--194.

Muhic, D. , Sundström, L. , Nilsson, L. , Sandberg, C. , Ullmar, M. , Backlund, U. & Engstrand, P. (2009). Influence of temperature on energy efficiency in double disc chip refining. In Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009.. pp. 344--347.

Nordin, L. , O'Nils, M. , Engstrand, P. , Bäck, R. , Ferritsius, O. & Sandberg, C. (2009). Measurement and prediction of dewatering characteristics for mechanical pulps using optical fibre analyzers. In Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009.. pp. 309--316.

Gorski, D. , Engstrand, P. , Hill, J. & Johansson, L. (2009). Review: Reduction of energy consumption in refining through mechanical pretreatment of wood chips. In Proceedings - 2009 International Mechanical Pulping Conference, IMPC 2009.. pp. 17--21.

Nordin, L. , O'Nils, M. , Engstrand, P. & Sundvall, Ö. (2008). Characterization and classification of dewatering measurement techniques for mechanical pulps. In Proceedings of the PRS, Finland, May 2008..

Nordin, L. , O´Nils, M. , Engstrand, P. & Sundvall, Ö. (2008). Towards relevant dewatering measurement techniques : Caracterisation and classification of dewatering measurement techniques for mechanical pulps. In FMPRS May 2008.

Sikter, D. , Karlström, A. , Engstrand, P. & Czmaidalka, J. (2007). Using the refining zone temperature profile for quality control. In International Mechanical Pulping Conference 2007, TAPPI. Atlanta, GA : . pp. 894--902.

Persson, E. , Engstrand, P. , Karlsson, L. , Fredrik, N. & Wahlgren, M. (2003). Utilization of the natural variation in wood properties–a comparison between pilot plant and mill scale trials. In Proceedings of International Mechanical Pulping Conference, Quebec City.. pp. 83--90.

Möller, K. , Nikko, A. & Engstrand, P. (2002). The effect of multiple recycling on newsprint quality : a large-scale pilot study, performed 1992 -1996. In PTS-CTP Symposium on Deinking Technology, 22-24 April 2002 Munich Germany.

Manuscripts

Nordin, L. , O'Nils, M. , Engstrand, P. , Bäck, R. , Ferritsius, O. , Ferritsius, R. , Sandberg, C. & Sundvall, Ö. Analysis of the quality of optical fibre and fines measurement for prediction of dewatering characteristics for mechanical pulps.

Gorski, D. , Johansson, L. & Engstrand, P. Bleaching efficiency in peroxide-based ATMP process compared to conventional bleaching.

Afewerki, S. , Alimohammadzadeh, R. , Henshaw Osong, S. , Tai, C. , Engstrand, P. & Córdova, A. Eco-friendly design for scalable direct fabrication of nanocellulose.

Rahman, H. , An, S. , Norlin, B. , Persson, E. & Engstrand, P. Measurement of S and Na distribution in impregnated wood chip by XRF.

Karlsson, A. , Paulsson, M. , Engstrand, P. & Hedenström, E. Reduced heat-induced darkening and enhanced bleachability of mechanical pulps studied using the UV-visible absorption spectra.

Henshaw Osong, S. , Norgren, S. , Pettersson, G. & Engstrand, P. The use of cationic starch and microfibrillated cellulose to improve strength properties of CTMP-based paperboard.

Patents

Höglund, H. , Pettersson, G. , Norgren, S. & Engstrand, P. (2018). A paper or paperboard product comprising at least one ply containing high yield pulp and its production method .

Engstrand, P. , Carlberg, T. , Hellström, L. M. , Gradin, P. & Gregersen, Ø. W. (2012). Method for producing and processing wood chips [Förfarande för framställning av flis] .

Engstrand, P. , Lindgren, J. & Agnemo, R. (2004). A method for increasing the stability of fluorescent whitening agent [Metod för att öka stabiliteten hos fluorescerande vitmedel] .

Engstrand, P. , Sandberg, C. & Nilsson, C. F. (2004). A method for selective removal of ray cells from cellulose pulp [Förfarande för selektivt avlägsnande av märgstråleceller ur cellulosamassa] .

Engstrand, P. , Sandberg, C. , Jonsson, J. , Starck, G. , Wahlgren, M. & Wancke-Ståhl, C. (2003). Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp) [Förfarande för framställning av blekt termomekanisk massa (TMP) eller blekt kemitermomekanisk massa (CTMP)] .

Engstrand, P. & Karlström, A. (1996). System for continuously measuring pressure and temperature in the beating zones of refiners [System för att kontinuerligt mäta tryck och temperatur i malzonen hos raffinörer] .

Engstrand, P. , Hammar, L. Å. , Sjögren, B. , Svensson, B. & Htun, M. (1991). A method of producing cellulosic pulp .

Engstrand, P. , Pettersson, R. , Htun, M. , Hammar, L. Å. & Svensson, B. (1989). Method of making mechanical and chemi-mechanical papermaking pulp [Framställning av mekanisk och kemimekanisk massa i två steg] .

Engstrand, P. , Hammar, L. Å. , Htun, M. & Pettersson, R. (1987). Method of reducing the energy consumption at the refining of cellulose containing material [Sätt att reducera energikonsumtionen vid raffinering av cellulosahaltigt material] .

Reports

Engstrand, P. O. , Ferritsius, O. , Björkqvist, O. , Johansson, L. , Johansson, Ö. , Daniel, G. , Ferritsius, R. , Karlström, A. & et al. (2015). Mekmassainitiativet för energieffektivitet, e2mp-i. Sundsvall : Mittuniversitetet (Rapportserie FSCN 2015:58).

Engstrand, P. O. & Engberg, B. A. (2014). Filling the Gap - Final Report. Sundsvall : (Rapportserie FSCN 2014:57).

Björkqvist, O. , Engstrand, P. & Fridén, H. (2008). Energiåtervinning vid LC-raffinering – Förstudie. Stockholm : Värmeforsk (Värmeforsk skogsindustriella programmet S5-622).