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Pettersson, Gunilla
Publications (10 of 17) Show all publications
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. se 540115 C2.
Open this publication in new window or tab >>A paper or paperboard product comprising at least one ply containing high yield pulp and its production method
2018 (English)Patent (Other (popular science, discussion, etc.))
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:miun:diva-33506 (URN)
Patent
SE 540115 C2
Note

International application WO 2018054957 A1.

Available from: 2018-04-17 Created: 2018-04-17 Last updated: 2018-04-17Bibliographically approved
Pettersson, G., Norgren, S. & Höglund, H. (2017). Strong paper from spruce CTMP - Part I. Nordic Pulp & Paper Research Journal, 32(1), 54-58
Open this publication in new window or tab >>Strong paper from spruce CTMP - Part I
2017 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 32, no 1, p. 54-58Article in journal (Refereed) Published
Abstract [en]

This study was carried out on sheets from spruce CTMP fibers, which are surface treated with a mix of cationic starch and CMC and blended with 20% bleach softwood chemical pulp fibers before handsheets were prepared in a Rapid Köthen sheet former, where the sheets were dried to 40-55% d.c. The sheets were pressed in a hot press nip in a pilot machine with adjustable pressure and heat. Both low and high nip pressure were used in combination with two different nip temperatures, 80°C and 100°C, to achieve sheets in a broad range of densities. The results show that remarkable improvements are possible, both in terms of tensile index (up to 85 kNm/kg) and compression strength, SCT, (up to 38 kNm/kg) on the CTMP-based sheets under optimal conditions at papermaking, i.e. consolidate the sheet structure in a press nip at evaluated temperatures. It is evident from the current study that there is an as of yet unexploited potential in modifying the conditions of papermaking from spruce CTMP furnishes, which can be utilized for the manufacturing of papers with high requirements on strength and stiffness, e.g. packaging papers.

Keywords
Adsorption, CMC, CTMP, Heat, Polyelectrolytes, Pressure, Starch, Tensile index
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-30664 (URN)10.3183/NPPRJ-2017-32-01-p054-058 (DOI)000398384400007 ()2-s2.0-85016441688 (Scopus ID)
Available from: 2017-04-26 Created: 2017-04-26 Last updated: 2017-06-09Bibliographically approved
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: . Paper presented at Paper Conference and Trade Show, PaperCon 2016, 15 May 2016 through 18 May 2016, Cincinnati; United States (pp. 556-564). TAPPI Press, 1
Open this publication in new window or tab >>Low energy CTMP in strong and bulky paperboard plies
2016 (English)In: Paper Conference and Trade Show, PaperCon 2016, TAPPI Press, 2016, Vol. 1, p. 556-564Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
TAPPI Press, 2016
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-30112 (URN)2-s2.0-85010465464 (Scopus ID)9781510831193 (ISBN)
Conference
Paper Conference and Trade Show, PaperCon 2016, 15 May 2016 through 18 May 2016, Cincinnati; United States
Available from: 2017-02-14 Created: 2017-02-14 Last updated: 2017-02-14Bibliographically approved
Marais, A., Enarsson, L.-E., Pettersson, G., Lindström, T. & Wågberg, L. (2016). Pilot-scale papermaking using Layer-by-Layer treated fibres; Comparison between the effects of beating and of sequential addition of polymeric additives. Nordic Pulp & Paper Research Journal, 31(2), 308-314
Open this publication in new window or tab >>Pilot-scale papermaking using Layer-by-Layer treated fibres; Comparison between the effects of beating and of sequential addition of polymeric additives
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2016 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 31, no 2, p. 308-314Article in journal (Refereed) Published
Abstract [en]

The Layer-by-Layer (LbL) deposition technique was used to treat fibres before papermaking on a pilot scale. Following a laboratory pre-study performed earlier to determine the adsorption isotherms and the kinetics of formation of multilayers of polyamideamine epichlorydrine (PAE) and carboxymethylated cellulose (CMC) on unbeaten, bleached softwood fibres, online LbL treatment of the furnish was carried out on the EuroFEX pilot paper machine. Papers from fibres coated with up to four layers of polyelectrolytes were produced. Two different LbL systems were investigated, with anionic CMC in combination with either PAE or cationic starch (CS). The results showed that the mechanical strength of the paper significantly increased when the fibres were LbL-treated online. A comparison with conventional beating of the fibres revealed that the LbL treatment was a potential substitute to beating treatment, as the density of the LbL-treated papers remained constant while the mechanical properties were significantly improved. At the same time, the press solids content was significantly higher (2%) when using LbL-treated fibres than with beaten fibres.

Keywords
Layer-by-Layer, Paper Strength, Pilot-scale, Polyelectrolyte multilayers, Pulp fibres
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-28944 (URN)000378442300017 ()2-s2.0-84977485979 (Scopus ID)
Note

CODEN: NPPJE

Available from: 2016-09-27 Created: 2016-09-27 Last updated: 2017-11-21Bibliographically approved
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: . Paper presented at International Mechanical Pulping Conference 2016, IMPC 2016; Jacksonville; United States; 26 September 2016 through 28 September 2016 (pp. 87-93). TAPPI Press
Open this publication in new window or tab >>Processing of nanocellulose and applications relating to CTMP-based paperboard and foams
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2016 (English)In: International Mechanical Pulping Conference 2016, IMPC 2016, TAPPI Press, 2016, p. 87-93Conference paper, Published paper (Refereed)
Abstract [en]

Although remarkable success has been made in the production of nanocellulose through several processing methods, it still remain a challenge to reduce the overall energy consumption, to use green chemistry and sustainable approach in order to make it feasible for industrial production of this novel nanomaterial. Herein, we have developed a new eco-friendly and sustainable approach to produce nanocellulose using organic acid combined with high-shear homogenisation, made hydrophobisation of nanocellulose and cross-linked the modified nanocellulosic material. Also, TEMPO-mediated oxidised nanocellulose was produced in order to compare the processing route with that of mild organic acid hydrolysis. Freeze-dried 3D structure of TEMPO-derived nanocellulose foam materials made fi-om bleached sulphite pulp and CTMP, respectively. Further, there is growing interest in using nanocellulose or microfibrillated cellulose (MFC) as an alternative paper sfrength additive in papermaking, and in using chemi-thermomechanical pulp (CTMP) with high freeness in producing CTMP-based paperboard with high bulk properties. To achieve greater strength improvement results, particularly for packaging paperboards, different proportions of cationic starch (CS) or MFC can be used to significantly improve the z-strength, with only a slight increase in sheet density. Research in this area is exploring CS or MFC as potential strength additives in CTMP-based paperboard, which is interesting from an industrial perspective. The mean grammage of the CTMP handsheets produced was approximately 150 g m~, and it was found that blending CTMP with CS or MFC yielded handsheets with significantly improved z-strength, tensile index, burst index and other strength properties at similar sheet densities.

Place, publisher, year, edition, pages
TAPPI Press, 2016
Keywords
Cationic starch, Chemi-thermomechanical pulp, Microfibrillated cellulose, Paperboard, Strength additive, TEMPO
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-29834 (URN)2-s2.0-85006448740 (Scopus ID)978-151083073-8 (ISBN)
Conference
International Mechanical Pulping Conference 2016, IMPC 2016; Jacksonville; United States; 26 September 2016 through 28 September 2016
Note

Funding details: Mid Sweden University

Available from: 2017-01-09 Created: 2017-01-09 Last updated: 2017-01-09Bibliographically approved
Pettersson, G., Norgren, S. & Höglund, H. (2016). Strong paper from spruce CTMP. In: International Mechanical Pulping Conference 2016, IMPC 2016: . Paper presented at International Mechanical Pulping Conference 2016, IMPC 2016; Jacksonville; United States; 26 September 2016 through 28 September 2016 (pp. 229-233). TAPPI Press
Open this publication in new window or tab >>Strong paper from spruce CTMP
2016 (English)In: International Mechanical Pulping Conference 2016, IMPC 2016, TAPPI Press, 2016, p. 229-233Conference paper, Published paper (Refereed)
Abstract [en]

This study was carried out on sheets from spruce CTMP fibers, which are surface treated with a mix of cationic starch and CMC and blended with 20% bleach softwood chemical pulp fibers before handsheets were prepared in a Rapid Kothen sheet former, where the sheets were dried to 40-55% d.c. The sheets were pressed in a hot press nip in a pilot machine with adjustable pressure and heat. Both low and high nip pressure were used in combination with two different nip temperatures, 80 °C and 100 °C, to achieve sheets in a broad range of densities. The results show that remarkable improvements are possible, both in terms of tensile index (up to 85 kNm/kg) and compression strength, SCT, (up to 38kNm/kg) on the CTMP-based sheets under optimal conditions at papermaking, i.e. consolidate the sheet structure in a press nip at evaluated temperatures. It is evident from the current study that there is an as of yet unexploited potential in modifying the conditions of papermaking from spruce CTMP furnishes, which can be utilized for the manufacturing of papers with high requirements on strength and stiffness, e.g. packaging papers.

Place, publisher, year, edition, pages
TAPPI Press, 2016
Keywords
CMC, CTMP, Heat, Polyelectrolytes, Pressure, Starch, Tensile index Adsorption
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-29836 (URN)2-s2.0-85006415447 (Scopus ID)9781510830738 (ISBN)
Conference
International Mechanical Pulping Conference 2016, IMPC 2016; Jacksonville; United States; 26 September 2016 through 28 September 2016
Available from: 2017-01-09 Created: 2017-01-09 Last updated: 2017-04-26Bibliographically approved
Pettersson, G., Höglund, H., Norgren, S., Sjöberg, J., Peng, F., Hallgren, H., . . . Solberg, D. (2015). Strong and bulky paperboard sheets from surface modified CTMP, manufactured at low energy. Nordic Pulp & Paper Research Journal, 30(2), 318-324
Open this publication in new window or tab >>Strong and bulky paperboard sheets from surface modified CTMP, manufactured at low energy
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2015 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 30, no 2, p. 318-324Article in journal (Refereed) Published
Abstract [en]

A description is given regarding methods used to manufacture strong and bulky sheets from furnishes based on a broad range of surface modified CTMP qualities. Starch and CMC are adsorbed on the fibre surfaces using a multilayer or a MIX concept. It is shown that both the in-plane and out-of-plane strength for the CTMP based sheets after such surface treatment can be more than doubled at a maintained density. This can be utilized to improve bending stiffness or to reduce the basis weight in multi-ply paperboards.

Keywords
CTMP, Starch, CMC, Multilayer, Paperboard, Strength properties
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-25692 (URN)000354806700018 ()2-s2.0-84945899503 (Scopus ID)
Available from: 2015-08-21 Created: 2015-08-18 Last updated: 2017-08-10Bibliographically approved
Norgren, S., Pettersson, G. & Höglund, H. (2014). High strength papers from high yield pulps. In: International Mechanical Pulping Conference, IMPC 2014: . Paper presented at International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275.
Open this publication in new window or tab >>High strength papers from high yield pulps
2014 (English)In: International Mechanical Pulping Conference, IMPC 2014, 2014Conference paper, Published paper (Refereed)
Abstract [en]

The positive effects changing the present standard conditions regarding temperature and moisture content during pressing and drying in papermaking of high yield pulp furnishes, such as those from TMP and CTMP, has previously been reported in a series of studies at Mid Sweden University. In the current study, the effects of fibre surface modification by starch/CMC at press-drying conditions have been investigated. It is shown how the strength properties of sheets from HTCTMP, manufactured at very low electric energy consumption (approximately 600 kWh/ton), can be radically improved by several hundred percent at optimum papermaking conditions.

Series
International Mechanical Pulping Conference, IMPC 2014
National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-24067 (URN)2-s2.0-84923974435 (Scopus ID)9780000000002 (ISBN)
Conference
International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275
Note

Export Date: 7 January 2015

Available from: 2015-01-08 Created: 2015-01-07 Last updated: 2015-08-12Bibliographically approved
Pettersson, G., Höglund, H., Sjöberg, J. C., Peng, F., Bergström, J., Solberg, D., . . . Ljungqvist, C.-H. -. (2014). Strong and bulky paperboard plies from low energy CTMP. In: International Mechanical Pulping Conference, IMPC 2014: . Paper presented at International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275.
Open this publication in new window or tab >>Strong and bulky paperboard plies from low energy CTMP
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2014 (English)In: International Mechanical Pulping Conference, IMPC 2014, 2014Conference paper, Published paper (Refereed)
Abstract [en]

A description is given regarding methods used to manufacture strong and bulky sheets from furnishes based on a broad range of surface modified CTMP qualities. Starch and CMC are adsorbed on the fibre surfaces using a multilayer or a MIX concept. It is shown that both the in-plane and out-of-plane strength for the CTMP based sheets after such surface treatment can be more than doubled at a maintained density. This can be utilized to improve bending stiffness or to reduce the basis weight in multi-ply paperboards.

National Category
Chemical Engineering
Identifiers
urn:nbn:se:miun:diva-24070 (URN)2-s2.0-84924007797 (Scopus ID)9780000000002 (ISBN)
Conference
International Mechanical Pulping Conference, IMPC 2014; Helsinki; Finland; 2 June 2014 through 5 June 2014; Code 109275
Note

Export Date: 7 January 2015

Available from: 2015-01-08 Created: 2015-01-07 Last updated: 2015-08-12Bibliographically approved
Pettersson, G., Sjöberg, J., Wågberg, L., Höglund, H. & Averheim, A. (2007). Increased joint-forming ability of ductile kraft pulp fibres by polyelectrolyte multilayer treatment-Influence of refining and drying strategies. Nordic Pulp & Paper Research Journal, 22(2), 228-235
Open this publication in new window or tab >>Increased joint-forming ability of ductile kraft pulp fibres by polyelectrolyte multilayer treatment-Influence of refining and drying strategies
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2007 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 22, no 2, p. 228-235Article in journal (Refereed) Published
Abstract [en]

In this study a sack paper furnish was used. It consisted of a high-consistency kraft pulp refined in either an atmospheric pressure or a pressurized system. The pulps were subsequently low-consistency refined in an Escher-Wyss laboratory refiner to 17.5-20.5 SR. Ordinary ISO sheets and freely dried sheets were manufactured from these pulp samples to serve as reference sheets. The laboratory sheets made of pulp from the pressurized system had a higher strain at break and tensile energy adsorption index but a lower tensile index than sheets made of pulp from a conventional atmospheric highconsistency refiner. These sheets were subject to a polyelectrolyte multilayer treatment to increase the interaction between the fibres, thus enhancing the paper strength properties. The polyelectrolyte multilayers (PEM) were applied by sequentially treating fibres from an unbleached kraft pulp for sack paper production with cationic starch and anionic carboxymethyl cellulose. The multilayer treatment was only applied to 50% of the stock and both ordinary ISO sheets and freely dried sheets were prepared with one and three layers of polyelectrolyte. Evaluation of the strength properties of the sheets showed that the addition of only one layer of starch increased strain at break, tensile index, tensile energy adsorption index, and out-of-plane properties measured as Scott-bond values. Using the multilayer technique created large increases in Scott-bond, a measure of the internal bonding of the sheets. The achieved effects were significantly larger than those usually achieved by applying starch alone to enhance the out-of plane strength properties. Also, the density increased considerably when the third layer was applied, for both ISO and freely dried sheets, though the tensile strength was enhanced significantly only in the freely dried sheets.

Keywords
adsorption, interaction, mechanical properties, multilayer
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:miun:diva-4169 (URN)10.3183/NPPRJ-2007-22-02-p228-235 (DOI)000248057800012 ()2-s2.0-34547365094 (Scopus ID)4864 (Local ID)4864 (Archive number)4864 (OAI)
Available from: 2008-09-30 Created: 2009-06-08 Last updated: 2017-12-12Bibliographically approved
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