摘要
运用通过低活性、柔性异弗尔二异氰酸酯与二乙烯三胺的界面聚合反应合成了以正十八烷为囊芯的聚脲微胶囊相变材料，通过采用红外光谱、光学显微镜、热重分析等对其进行表征，并考察了乳化剂聚氧乙烯仲辛酚醚-10（OP-10）用量和正十八烷浓度对微胶囊形成及形貌的影响．结果表明：在0．5％OP-10和0．3g／mL正十八烷的优化条件下，制备的微胶囊相变材料为球形好、破损低、粒径在1～6μm之间的微球，而且具有良好的热稳定性；微胶囊的内核为正十八烷，外壳为聚脲；采用气相色谱法测得的正十八烷的负载量为35．4％．
Polyurea microcapsules cOntaining n-octadecane were prepared via the interfacial polymerization of lowactivity flexible isophorone diisocyanate and diethylene triamine, and then were characterized by means of FT-IR, optical microscopy and TG. Moreover, the effects of emulsifier （ polyoxyethyloctylpheny ether-10, marked with OP- 10） content and n-octadecane content on the formation and morphology of the microcapsules were investigated. The results show that, in the optimal conditions, namely, an OP-10 mass fraction of 0. 5% and a n-octadecane content of 0. 3 g/mL, well-shaped microcapsule spheres composed of n-octadecane （the core） and polyurea （the shell） can be obtained, and that the microcapsules, 1 -6 μm in diameter, possess low leakag e and good thermal stability. In addition, GC results indicate that the n-octadecane content in the microcapsules is 35.4%.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第7期97-101,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(20576045)
新世纪优秀人才支持计划资助项目(NCET-06-740)
华南理工大学传热强化与过程节能教育部重点实验室开放基金资助项目(KF0607)
关键词
微胶囊
界面聚合
正十八烷
聚脲
microcapsule
interfacial polymerization
n-octadecane
polyurea
