高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (1): 172.doi: 10.7503/cjcu20170416

• 高分子化学 • 上一篇    下一篇

基于碳酸钙模板的特殊形状层层组装微胶囊的制备

杨辉, 李通, 仝维鋆(), 高长有   

  1. 高分子合成与功能构造教育部重点实验室, 浙江大学高分子科学与工程学系, 杭州 310027
  • 收稿日期:2017-06-29 出版日期:2018-01-10 发布日期:2017-11-07
  • 作者简介:联系人简介: 仝维鋆, 男, 博士, 副教授, 主要从事自组装微胶囊和微球研究. E-mail:tongwj@zju.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21374101)、 浙江大学曹光彪高科技发展基金和中央高校基本科研业务费(批准号: 2016QNA4033)资助

Fabrication of Microcapsules with Special Shapes by Layer-by-layer Assembly on CaCO3 Microparticles

YANG Hui, LI Tong, TONG Weijun*(), GAO Changyou   

  1. Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2017-06-29 Online:2018-01-10 Published:2017-11-07
  • Contact: TONG Weijun E-mail:tongwj@zju.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21374101), the Zhejiang University K,P,Chao’s High Technology Development Foundation and the Fundamental Research Funds for the Central Universities, China(No.2016QNA4033)

摘要:

以Na2CO3和CaCl2为原料, 聚烯丙基胺盐酸盐(PAH)为添加剂, 通过磁力搅拌和超声混合的方式分别制备了两面凸碟形仿血小板形状和纺锤形的碳酸钙微粒. 仿血小板形状的碳酸钙微粒为球霰石晶相, 而纺锤形碳酸钙微粒为文石晶相. 模板微粒中均掺杂了少量PAH. 溶液混合方式和PAH添加剂的协同作用导致了特殊形状碳酸钙微粒的形成. 以这2种粒子为模板通过层层组装技术分别制备了仿血小板形状和纺锤形微胶囊. 得到的微胶囊能够在水中分散良好并保持模板的特殊形状.

关键词: 碳酸钙微粒, 纺锤形微胶囊, 仿血小板形微胶囊, 层层组装

Abstract:

Biconvex platelet-like and spindle-like calcium carbonate particles were prepared by mixing Na2CO3 and CaCl2 solutions in the presence of poly(allylamine hydrochloride)(PAH) under magnetic stirring and ultrasound treatment, respectively. The platelet-like CaCO3 particles were vaterites, while the spindle-like ones were mainly aragonites. These two kinds of particles were both doped with small amount of PAH. The formation of CaCO3 particles with specific shapes was due to the synergistic effect of mixing method and PAH additives. Then platelet-like and spindle-like polyelectrolyte multilayer microcapsules were fabricated via layer-by-layer(LbL) assembly method using the CaCO3 particles with corresponding shape as templates. The fabricated micrcapsules could be well dispersed in aqueous medium and maintain their original shapes.

Key words: CaCO3 microparticle, Platelet-like microcapsule, Spindle-like microcapsule, Layer-by-layer assembly

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