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Research Article | Open Access

Comparison of Nanofibrillated Cellulose and Hydroxyethyl Cellulose in Improving the Storage Stability of Waterborne Coatings

Xinqi Li1,2, Jinghuan Chen1,2( ), Jingang Liu1,2( ), Tao Zhao1,3, Kaiji Yang4
China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102, China
National Engineering Lab for Pulp and Paper, Beijing, 100102, China
Sinolight Specialty Fiber Products Co., Ltd., Langfang, Hebei Province, 065001, China
CNOOC (Tianjin) Oilfield Chemical Co., Ltd., Tianjin, 300450, China
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Abstract

Waterborne coatings often delaminate and settle during long-term storage, requiring the addition of thickeners. The effects of nanofibrillated cellulose (NFC) and the commonly used thickener, hydroxyethyl cellulose (HEC), on the storage stability of waterborne coatings were compared in this study. The morphology of NFC was characterized using infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The rotational viscosity and rheological properties of the waterborne coatings with NFC and HEC were tested. Stationary settling experiments were also conducted at different temperatures to compare the difference of NFC and HEC on improving the storage stability of the waterborne coatings. The results showed that the waterborne coating with NFC exhibited pseudoplastic fluid characteristics; a small addition of NFC can achieve the same improvement effect on the storage stability of waterborne coatings as HEC. Further, the improvement effect of NFC was not affected by temperature. The waterborne coating with NFC still exhibited good storage stability at high temperatures, which was significantly superior to that of HEC. Therefore, NFC is a feasible agent for improving the prolonged storage stability and warming-induced delamination of waterborne coatings.

Keywords

nanofibrillated cellulosestorage stabilitywaterborne coatingshydroxyethyl celluloseyield stress

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Paper and Biomaterials
Volume 8 Issue 4,
October 2023
Pages 1-8
DOI: 10.26599/PBM.2023.9260020
Cite this article:
Li X, Chen J, Liu J, et al. Comparison of Nanofibrillated Cellulose and Hydroxyethyl Cellulose in Improving the Storage Stability of Waterborne Coatings. Paper and Biomaterials, 2023, 8(4): 1-8. https://doi.org/10.26599/PBM.2023.9260020

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Received: 05 June 2023
Accepted: 18 July 2023
Published: 25 October 2023
© 2023 Published by Paper and Biomaterials Editorial Board.

The articles published in this open access journal are distributed under the terms and conditions of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by-nc-nd/4.0/).
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