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76μm,囊芯含量高达83%,相变焓达到174 J/g,具有很高的储热容量.
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 pre⁃pared by Pickering emulsion polymerization.The MePCM was characterized by large diameter(76μm average⁃ly),high core content[w(dodecanol)=83%]and excellent energy storage capability(phase change enthalpy of 174 J/g).
作者
李博鑫
杨隽阁
尹德忠
高成乾
张秋禹
LI Boxin;YANG Junge;YIN Dezhong;GAO Chengqian;ZHANG Qiuyu(Key Laboratory of Special Function and Intelligent Polymer Materials,Ministry of Industry and Information Technology,Northwestern Polytechnical University,Xi’an 710072,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2020年第9期2085-2089,共5页
Chemical Journal of Chinese Universities
基金
国家重点研发计划项目(批准号:2016YFC0301302)
中央高校基本科研业务项目(批准号:310201911fz051)资助.
关键词
微胶囊相变材料
Pickering乳液
聚合物微球
分散聚合
Microencapsulated phase change material
Pickering emulsion
Polymer microsphere
Disper⁃sion polymerization
作者简介
联系人:尹德忠,男,博士,教授,主要从事高分子功能材料方面的研究.E-mail:dezh_yin@nwpu.edu.cn。
