Paper dry strength improvement by xyloglucan addition

Wet-end application, spray coating and synergism with borate

Lage Ahrenstedt, Antti Oksanen, Kristian Salminen, Harry Brumer

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

AbstractThe polysaccharide xyloglucan as a wet-end additive improves paper properties. In the present study, paper strength improvement was analysed for dry handsheets made from chemical, mechanical and recycled pulps coated with xyloglucan in a spray application. Results are compared with sheets made from the same pulps treated with xyloglucan in the wet-end. Kraft pulp handsheets of bleached hardwood and softwood showed significant improvements of tensile, tear and Z-strength by xyloglucan spray treatment versus wet-end application, whereas handsheets of de-inked and thermomechanical pulp were improved only slightly. In both wet-end and spray applications, the effect of xyloglucan addition was intimately related to the presence of non-cellulosic components on the fibre surface. Further strength improvements were obtained for chemical pulps by addition of borax to the spray solution, which were likely to be due to the formation of borate-mediated xyloglucan cross-links. Spray coating of xyloglucan, with or without borax, thus represents a potential new application of this polysaccharide to increase paper dry strength.
Original languageEnglish
Pages (from-to)8-14
JournalHolzforschung
Volume62
Issue number1
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

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Borates
Sodium borate
Coatings
Polysaccharides
Pulp
Thermomechanical pulp
Chemical pulp
Kraft pulp
Softwoods
Hardwoods
xyloglucan
Fibers

Cite this

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title = "Paper dry strength improvement by xyloglucan addition: Wet-end application, spray coating and synergism with borate",
abstract = "AbstractThe polysaccharide xyloglucan as a wet-end additive improves paper properties. In the present study, paper strength improvement was analysed for dry handsheets made from chemical, mechanical and recycled pulps coated with xyloglucan in a spray application. Results are compared with sheets made from the same pulps treated with xyloglucan in the wet-end. Kraft pulp handsheets of bleached hardwood and softwood showed significant improvements of tensile, tear and Z-strength by xyloglucan spray treatment versus wet-end application, whereas handsheets of de-inked and thermomechanical pulp were improved only slightly. In both wet-end and spray applications, the effect of xyloglucan addition was intimately related to the presence of non-cellulosic components on the fibre surface. Further strength improvements were obtained for chemical pulps by addition of borax to the spray solution, which were likely to be due to the formation of borate-mediated xyloglucan cross-links. Spray coating of xyloglucan, with or without borax, thus represents a potential new application of this polysaccharide to increase paper dry strength.",
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Paper dry strength improvement by xyloglucan addition : Wet-end application, spray coating and synergism with borate. / Ahrenstedt, Lage; Oksanen, Antti; Salminen, Kristian; Brumer, Harry.

In: Holzforschung, Vol. 62, No. 1, 2007, p. 8-14.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Paper dry strength improvement by xyloglucan addition

T2 - Wet-end application, spray coating and synergism with borate

AU - Ahrenstedt, Lage

AU - Oksanen, Antti

AU - Salminen, Kristian

AU - Brumer, Harry

PY - 2007

Y1 - 2007

N2 - AbstractThe polysaccharide xyloglucan as a wet-end additive improves paper properties. In the present study, paper strength improvement was analysed for dry handsheets made from chemical, mechanical and recycled pulps coated with xyloglucan in a spray application. Results are compared with sheets made from the same pulps treated with xyloglucan in the wet-end. Kraft pulp handsheets of bleached hardwood and softwood showed significant improvements of tensile, tear and Z-strength by xyloglucan spray treatment versus wet-end application, whereas handsheets of de-inked and thermomechanical pulp were improved only slightly. In both wet-end and spray applications, the effect of xyloglucan addition was intimately related to the presence of non-cellulosic components on the fibre surface. Further strength improvements were obtained for chemical pulps by addition of borax to the spray solution, which were likely to be due to the formation of borate-mediated xyloglucan cross-links. Spray coating of xyloglucan, with or without borax, thus represents a potential new application of this polysaccharide to increase paper dry strength.

AB - AbstractThe polysaccharide xyloglucan as a wet-end additive improves paper properties. In the present study, paper strength improvement was analysed for dry handsheets made from chemical, mechanical and recycled pulps coated with xyloglucan in a spray application. Results are compared with sheets made from the same pulps treated with xyloglucan in the wet-end. Kraft pulp handsheets of bleached hardwood and softwood showed significant improvements of tensile, tear and Z-strength by xyloglucan spray treatment versus wet-end application, whereas handsheets of de-inked and thermomechanical pulp were improved only slightly. In both wet-end and spray applications, the effect of xyloglucan addition was intimately related to the presence of non-cellulosic components on the fibre surface. Further strength improvements were obtained for chemical pulps by addition of borax to the spray solution, which were likely to be due to the formation of borate-mediated xyloglucan cross-links. Spray coating of xyloglucan, with or without borax, thus represents a potential new application of this polysaccharide to increase paper dry strength.

U2 - 10.1515/HF.2008.002

DO - 10.1515/HF.2008.002

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VL - 62

SP - 8

EP - 14

JO - Holzforschung

JF - Holzforschung

SN - 0018-3830

IS - 1

ER -