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| Study on Fibrillation of Rice Straw Fibers and Cross-linking with Ions to Prepare Hydrophobic Cellulose Films |
| Received:February 23, 2024 |
| DOI：10.11980/j.issn.0254-508X.2024.05.001 |
| Key Words:cellulose microfibers Fe3+ cross-linking hydrophobic modification contact angle tensile stress |
| Fund Project:国家重点研究计划国际合作项目（2021YFE0104500）；国家自然科学基金（22078114）。 |
| Author Name | Affiliation | Postcode | | YI Zede | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | SHEN Juanli | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | FU Shiyu* | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640
South China University of Technology-Zhuhai Institute of Modern Industrial Innovation, Zhuhai, Guangdong Province, 519175 | 519175 |
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| Abstract:Cellulose microfiber （CMF） film with hydrophobicity was prepared from agricultural waste rice straw by caustic soda pulping， TEMPO oxidation and mechanical treatment， followed by vacuum filtration and cross-linking with Fe3+. The structure and properties were analyzed by FESEM， ATR-FTI-IR， Zeta potential test， XRD， tensile test， contact angle and water absorption， etc. The results showed that the CMF was sufficiently cross-linked with Fe3+ to efficiently improve the hydrophobicity of CMF film. The water contact angle of CMF film was affected by the time of cross-linking and the concentration of Fe3+， which reached up to 134.15°. The water absorption of the film immersed in water after 24 h was 50%， which was significantly lower than that of the uncross-linked CMF film （210%）. The ionically cross-linked CMF film also had good wet tensile stress of 37.5 MPa. |
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