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| In-situ Pore Regulation of Bacterial Cellulose Microgel for High-surfactant-resistant “Island-Chain” Network |
| Received:April 28, 2025 Revised:May 15, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.10.009 |
| Key Words:bacterial cellulose microgel pore size regulation island-chain network rheological behavior |
| Fund Project:国家自然科学基金（52263012，5256030125）、云南省“兴滇人才”计划项目（KKRD202205060，2022）、云南省教育厅工程研究中心项目（KKPU202205001）。 |
| Author Name | Affiliation | Postcode | | SHI Zhiping* | School of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650500 | 650500 | | WANG Yingchao | School of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650500 | 650500 | | LI Kai* | School of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650500 | 650500 |
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| Abstract:In this study， hierarchical-pore bacterial cellulose microgels （BC-microgel） were prepared via methods including CaCO₃ content regulation （0~1 200 mg/L）， particle size screening （0.5~100 μm）. Then， AEO/BC-miccrogel/HPMC composite systems were constructed by combining with hydroxypropyl methyl cellulose （HPMC） and fatty alcohol-polyoxyethylene ether （AEO）. The results showed that when the CaCO₃ content was 300 mg/L and the particle size was 15 μm， the microgel structure with an average pore diameter of 3.17 μm could be formed. At this point， the “island-chain” network was stable and the yield stress of the composite system reached 0.89 Pa， and the thixotropic loop area increased to 0.58 Pa/s. Excessive CaCO₃ or improper particle size lead to disorder in pore structure and deterioration of performance. This study elucidated the structure-activity relationship between pore size regulation and network performance， thereby providing a theoretical basis for the functional development of high-concentra-tion surfactant systems. |
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