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| Effects of Different Pretreatment on the Dispersibility of Bamboo Pulp Fibers Suspensions |
| Received:August 31, 2022 |
| DOI：10.11981/j.issn.1000-6842.2023.04.19 |
| Key Words:bamboo pulp fibers;dispersibility;pretreatment;carboxylate contents;dispersants |
| Fund Project:龙游县2022年重大科技攻关课题（JHXM2022152）；浙江省重点研发技术项目（2019C03136）。 |
| Author Name | Affiliation | Postcode | | HAN Shuaichuang* | Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 | 310023 | | MA Qingzhi | Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 | 310023 | | CHEN Huanhuan | Zhejiang Jinlong Renewable Resources Science& Technology Co. Ltd.， Quzhou， Zhejiang Province， 324000 | 324000 | | HU Haowei | Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 | 310023 | | Katsande Faith Ngaatendwe | Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 | 310023 | | XU Weicheng | Zhejiang Jinlong Renewable Resources Science& Technology Co. Ltd.， Quzhou， Zhejiang Province， 324000 | 324000 | | ZHANG Xuejin | Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 | 310023 |
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| Abstract: |
| Industrial production efficiency of nanocellulose by mechanical homogenization was directly affected by dispersibility of pulp suspensions. The bamboo pulp was pretreated by TEMPO， enzymatic hydrolysis and refining to study dispersibility of the pulp suspensions. Physical morphology and surface charges of the pretreated pulp fibers were analyzed to explain the differences of dispersibility. Multiple light scattering results showed that TEMPO oxidized pulp fibers and refined pulp fibers had good dispersivity， while the enzymatic pulp fibers had bad dispersivity. Fibrillation on the refined pulp fibers was observed by scanning electron microscope （SEM）. The TEMPO oxidized pulp fibers had high carboxylate contents and high absolute value of Zeta potential. The dispersibility of the fibers could be improved by dispersants， and the best dispersibility of enzymatic hydrolysis fibers was obtained with 0.5% CMC dispersant. |
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