华南理工大学学报(自然科学版) ›› 2008, Vol. 36 ›› Issue (7): 97-101.

• 材料科学与技术 • 上一篇    下一篇

柔性链段构筑低破损聚脲胶囊封装正十八烷

裴丽霞姚新东2  刘正平张正国高学农1  纪红兵1   

  1. 1. 华南理工大学 传热强化与过程节能教育部重点实验室, 广东 广州 510640;2. 广西民族学院 绿色化学与技术重点实验室, 广西 南宁 530006
  • 收稿日期:2007-07-27 修回日期:2008-01-20 出版日期:2008-07-25 发布日期:2008-07-25
  • 通信作者: 纪红兵(1970-),男,教授,主要从事绿色化工的研究. E-mail:cehbji@scut.edu.cn
  • 作者简介:裴丽霞(1977-),女,讲师,主要从事功能材料的研究.E-mail:peilixia@scut.edu.cn
  • 基金资助:

    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).

Preparation of Low-Breakage Polyurea Microcapsules Containing n-Octadecane with Soft Segments

Pei Li-xia1  Yao Xin-dong2  Liu Zheng-ping Zhang Zheng-guo1  Gao Xue-nong1  Ji Hong-bing   

  1. 1. Key Laboratory of Enhanced Heat Transfer and Energy Conversation of the Ministry of Education, South. China University of Technology, Guangzhou 510640, Guangdong, China ; 2. The Key Laboratory of Green Chemistry of Guangxi, Guangxi University for Nationalities, Nanning 530006, Guangxi, China
  • Received:2007-07-27 Revised:2008-01-20 Online:2008-07-25 Published:2008-07-25
  • Contact: 纪红兵(1970-),男,教授,主要从事绿色化工的研究. E-mail:cehbji@scut.edu.cn
  • About author:裴丽霞(1977-),女,讲师,主要从事功能材料的研究.E-mail:peilixia@scut.edu.cn
  • Supported by:

    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).

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%.

关键词: 微胶囊, 界面聚合, 正十八烷, 聚脲

Abstract:

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%.

Key words: microcapsule, interfacial polymerization, n-octadecane, polyurea