| Enhanced Redispersibility of Cellulose Nanocrystals in Water via Surface Adsorption of Hydrolyzed Sugars from Corresponding Cellulose Nanocrystal Fabrication |
| Received:January 12, 2022 Click here to download the full text |
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| Author Name | Affiliation | | Zhang Yongqi | College of Bioengineering, Sichuan University of Science and Engineering, Yibin, Sichuan Province, 644000, China | | Xu Yongjian | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi Province, 710021, China | | Liu Chun | 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 | | Yang Ling | College of Bioengineering, Sichuan University of Science and Engineering, Yibin, Sichuan Province, 644000, China | | Hu Jianmin | Voith Paper (China) Co., Ltd., Suzhou, Jiangsu Province, 215300, China | | Zhang Ruixia | Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin, 300457, China | | Guan Xiuqiong | College of Bioengineering, Sichuan University of Science and Engineering, Yibin, Sichuan Province, 644000, 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. |
| keywords:water redispersion cellulose nanocrystals (CNCs) hydrolyzed sugars ethanol precipitation |
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