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Research Article | Open Access

Reinforcing Paper Strength by Dual Treatment of a Cationic Water-soluble Polymer and Cellulose Nanofibril

Aijiao Wang1,2( ), Lijun Wang1,2,3, Jianmei Jiang1,2, Xianping Yao1,2,3, Wenyan Zhao1,2,3
Zhejiang Hanghua New Material Science & Technology Co., Ltd., Hangzhou, Zhejiang Province, 311305, China
National Engineering & Technology Research Center for Paper Chemicals, Hangzhou, Zhejiang Province, 311305, China
Hangzhou Research Institute of Chemical Technology Co., Ltd., Hangzhou, Zhejiang Province, 310014, China
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Abstract

Cellulose nanofibril (CNF) was used as the anionic component of two dual strengthening systems wherein polyamidopolyamine epichlorohydrin resin (PAE) or cationic starch (CS) was used as the cationic component. Their strengthening effects were investigated for lowbasis-weight (30 g/m2) paper composed of a mixture of fully bleached softwood and hardwood pulp in a 4:1 mass ratio. Using the PAE/CNF or CS/CNF dual system, it was generally easier to achieve higher wet and dry tensile strengths of paper compared to the paper using the single PAE or CS system. For example, the paper using the PAE (0.4%)/CNF (0.3%) dual system exhibited 89% higher wet tensile strength than the paper using the single PAE (0.4%) system, and the paper using CS (1.3%)/CNF (0.3%) dual treatment showed 21% higher dry strength than that using the single CS (1.3%) system. However, the PAE/CNF system only showed small improvement in the dry strength of paper (11% higher than that of paper using the single PAE system), so did the CS/NFC system on wet strength improvement (only 17% higher than that of paper using the single CS system).

Keywords

cellulose nanofibrilpolyamidopolyamine epichlorohydrincationic starchdual treatment

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Paper and Biomaterials
Volume 4 Issue 4,
October 2019
Pages 31-36
DOI: 10.26599/PBM.2019.9260027
Cite this article:
Wang A, Wang L, Jiang J, et al. Reinforcing Paper Strength by Dual Treatment of a Cationic Water-soluble Polymer and Cellulose Nanofibril. Paper and Biomaterials, 2019, 4(4): 31-36. https://doi.org/10.26599/PBM.2019.9260027

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Received: 29 May 2019
Accepted: 11 July 2019
Published: 01 October 2019
© 2019 Paper and Biomaterials Editorial Board

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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