| 单分散聚合物微球稳定Pickering乳液法制备大粒径微胶囊相变材料 |
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| 引用本文： | 李博鑫,杨隽阁,尹德忠,高成乾,张秋禹.单分散聚合物微球稳定Pickering乳液法制备大粒径微胶囊相变材料[J].高等学校化学学报,2020,41(9):2085. |
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| 作者姓名： | 李博鑫 杨隽阁 尹德忠 高成乾 张秋禹 |
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| 作者单位： | 西北工业大学特种功能与智能高分子材料工业和信息化部重点实验室, 西安 710072 |
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| 基金项目： | 国家重点研发计划项目(2016YFC0301302);中央高校基本科研业务项目(310201911fz051) |
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| 摘 要： | 采用二步加料的分散聚合法制备单分散聚甲基丙烯酸缩水甘油酯(PGMA)微球, 并使其水解, 得到水包油(O/W)型Pickering乳液稳定剂. 在Pickering乳液聚合过程中, 利用相分离机制, 形成了聚苯乙烯(PSt)和 PGMA复合为整体囊壳的微胶囊相变材料. 微胶囊平均粒径达76 μm, 囊芯含量高达83%, 相变焓达到174 J/g, 具有很高的储热容量.
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| 关 键 词： | 微胶囊相变材料 Pickering乳液 聚合物微球 分散聚合 |
| 收稿时间： | 2020-04-26 |
Preparation of Large-sized Microencapsulated Phase Change Materials Through Pickering Emulsion Stabilized by Monodisperse Polymer Microspheres |
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| LI Boxin,YANG Junge,YIN Dezhong,GAO Chengqian,ZHANG Qiuyu.Preparation of Large-sized Microencapsulated Phase Change Materials Through Pickering Emulsion Stabilized by Monodisperse Polymer Microspheres[J].Chemical Research In Chinese Universities,2020,41(9):2085. |
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| Authors: | LI Boxin YANG Junge YIN Dezhong GAO Chengqian ZHANG Qiuyu |
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| Institution: | Key Laboratory of Special Function and Intelligent Polymer Materials, Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710072, China |
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| Abstract: | Monodispersive poly(glycidyl methacrylate)(PGMA) microspheres were prepared by dispersive polymerization and then were hydrolyzed to obtain oil-in-water Pickering stablizer. Based on phase separation mechanism, microcapsulated phase change material(MePCM) with PSt and PGMA composite shell were prepared by Pickering emulsion polymerization. The MePCM was characterized by large diameter(76 μm averagely), high core contentw(dodecanol)=83%] and excellent energy storage capability(phase change enthalpy of 174 J/g). |
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| Keywords: | Microencapsulated phase change material Pickering emulsion Polymer microsphere Dispersion polymerization |
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