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| Preparation and Characterization of Cellulose Nanocrystals from Bleached Bamboo Pulp Sheet |
| Received:May 07, 2019 |
| DOI：10.11981/j.issn.1000-6842.2020.03.09 |
| Key Words:cellulose nanocrystals （NCC）;bamboo pulp board;ultrasound |
| Fund Project:四川省科技厅农业农村领域重大项目（2019YFN0029）；四川省科技计划高新技术发展及产业化面上项目（2019YFG0271）；四川省教育厅项目（16ZA0254，17CZ0023）；四川轻化工大学人才引进项目（2017RCL26）。 |
| Author Name | Affiliation | E-mail | | LIU Jianrong* | Institute of Paper Science and Technology， Sichuan University of Science & Engineering， Zigong， Sichuan Province， 643000 | liujrong66@163.com | | ZHANG Zhenyu | Sichuan Tianzhu Zhuyuan Development Co.， Ltd.， Yibin， Sichuan Province， 644220 | |
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| Abstract: |
| In order to obtain cellulose nanocrystals （NCC）， bamboo pulp was treated with sulfuric acid assisted by magnetic stirring and ultrasonic wave after alkali pretreatment. The solid-liquid ratio of bamboo pulp to sulfuric acid was 1∶31. Effects of sulfuric acid concentration， sulfuric acid assisted with magnetic stirring treatment time and reaction temperature on NCC were discussed. And the properties of NCC were characterized by SEM， AFM， XRD and TGA. The results showed that the particle size of NCC was small and the distribution of NCC was uniform， and the crystal structure of NCC was changed from cellulose II to cellulose IVII when the optimum preparation condition of NCC was concentration of sulfuric acid of 65%， the reaction temperature of 45℃ and the treatment time of 45 min. Compared with bamboo cellulose， the adsorption capacity， accessibility， and thermostability of NCC were improved. |
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