Effects of cationic starch addition and pulp beating on strength properties of softwood kraft pulp

In this study, cationic starch (CS) was added to softwood kraft pulps at different degrees of beating in order to evaluate their effects on the strength properties of the pulp. Handsheets were prepared by using three levels of CS addition (0.75, 1.5, and 2.25% CS with respect to oven‐dry pulp) to kr...

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Published in:Die Stärke 2014-07, Vol.66 (7-8), p.655-659
Main Author: Gulsoy, Sezgin Koray
Format: Article
Language:eng ; fre ; ger
Subjects:
Beating degree
Cationic starch
Kraft pulp
softwood
starch
Strength properties
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description In this study, cationic starch (CS) was added to softwood kraft pulps at different degrees of beating in order to evaluate their effects on the strength properties of the pulp. Handsheets were prepared by using three levels of CS addition (0.75, 1.5, and 2.25% CS with respect to oven‐dry pulp) to kraft pulps at different beating degrees (15, 20, 25, and 30° SR). It was found that the tensile and burst indices improved with beating, CS addition, and a combination of these two applications, while the tear index decreased. Remarkable increases in burst and tensile indices were achieved with a 0.75% addition of CS to 15° SR and 20° SR pulps, while notable decreases in tear index was obtained at the same conditions. A gradual tendency was observed in higher beating degrees (25° SR and 30° SR) and higher CS additions (1.50 and 2.25%).
doi_str_mv 10.1002/star.201300247
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source Wiley-Blackwell Journals
subjects Beating degree
Cationic starch
Kraft pulp
softwood
starch
Strength properties
title Effects of cationic starch addition and pulp beating on strength properties of softwood kraft pulp
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