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Research Article | Open Access

Enhanced Redispersibility of Cellulose Nanocrystals in Water via Surface Adsorption of Hydrolyzed Sugars from Corresponding Cellulose Nanocrystal Fabrication

Yongqi Zhang1Yongjian Xu2( )Chun Liu1,2Ling Yang1Jianmin Hu3Ruixia Zhang4Xiuqiong Guan1
College of Bioengineering, Sichuan University of Science and Engineering, Yibin, Sichuan Province, 644000, China
College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi Province, 710021, China
Voith Paper (China) Co., Ltd., Suzhou, Jiangsu Province, 215300, China
Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin, 300457, China
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Abstract

Generally, hydrogen bonds are formed between cellulose nanocrystals (CNCs) during their water removal and drying, leading to the irreversible aggregation of CNCs, and thus a poor water-redispersibility. The present study demonstrated a novel approach that involved using hydrolyzed sugars generated from the corresponding CNC production as redispersing agents to enhance the redispersibility of CNCs. Experimental data indicated that hydrolyzed sugars can be adsorbed onto CNCs through ethanol precipitation. The oven-dried CNCs onto which hydrolyzed sugars were adsorbed via ethanol precipitation were homogeneously redispersed in water. The redispersed CNCs showed the particle size distribution, Zeta potential, and thermal decomposition properties similar to those of the CNCs without drying. This method may improve the use of hydrolyzed sugars obtained in the hydrolysate from the corresponding CNC production, as well as facilitate the transportation and storage of CNCs.

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Paper and Biomaterials
Pages 10-17
Cite this article:
Zhang Y, Xu Y, Liu C, et al. Enhanced Redispersibility of Cellulose Nanocrystals in Water via Surface Adsorption of Hydrolyzed Sugars from Corresponding Cellulose Nanocrystal Fabrication. Paper and Biomaterials, 2022, 7(2): 10-17. https://doi.org/10.1213/j.issn.2096-2355.2022.02.002

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Received: 12 January 2022
Accepted: 14 February 2022
Published: 25 April 2022
© 2022 Paper and Biomaterials

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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