Application of surface-modified carboxymethylated nanofibrillated cellulose as a strength enhancer for specialty paper

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-07-01 DOI:10.15376/biores.19.3.5586-5598

H. Jo, Ji Young Lee, Tae Young Kim

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Abstract

Pretreated carboxymethylated nanofibrillated cellulose (CM-NFC) was tested as a strength enhancer for specialty paper, such as banknotes made from cotton linter mixed pulp (CLMP). The pretreatment agent was cationic poly(acrylamide) (C-PAM). The CM-CMF prototype was supplied by a Korean manufacturer. Laboratory tests and pilot trials were performed to evaluate the strength enhancement of banknotes incorporated with surface-modified CM-NFC and determine the process problems encountered in a pilot paper machine. The CM-NFC was surface modified with 0.1% C-PAM without any agglomerates. The prepared laboratory handsheets had high paper strength, which was attributed to the higher nanofibril content of surface-modified CM-NFC compared with that of unmodified CM-NFC. Pilot trials showed that the incorporation of 3% surface-modified CM-NFC was highly effective in promoting the strength of banknote without low retention and drainability on the wet-end part of the pilot paper machine. Therefore, surface-modified CM-NFC at a controlled dosage could be used as a strength enhancer for specialty paper without incurring serious problems in a paper mill.

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将表面改性的羧甲基纳米纤维素用作特种纸的强度增强剂

测试了预处理羧甲基化纳米纤维素（CM-NFC）作为特种纸强度增强剂的性能，例如由棉林混合浆（CLMP）制成的纸币。预处理剂为阳离子聚丙烯酰胺（C-PAM）。CM-CMF 原型由一家韩国制造商提供。我们进行了实验室测试和中试，以评估加入表面改性 CM-NFC 的纸币的强度增强效果，并确定在中试造纸机中遇到的工艺问题。用 0.1% C-PAM 对 CM-NFC 进行了表面改性，未发现任何结块。制备的实验室手纸具有很高的纸张强度，这归因于与未改性的 CM-NFC 相比，表面改性 CM-NFC 的纳米纤维含量更高。试验结果表明，添加 3% 的表面改性 CM-NFC 对提高纸币强度非常有效，而且在试验造纸机的湿部留着率和排水性都不低。因此，表面改性 CM-NFC 在控制用量的情况下可用作特种纸的强度增强剂，而不会给造纸厂带来严重问题。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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