Investigation of alternative compounds to poly(E-MA) as a polymeric surfactant for preparation of microcapsules by phase separation method
Investigation of alternative compounds to poly(E-MA) as a polymeric surfactant for preparation of microcapsules by phase separation method
复制标题
研究聚(E-MA)替代化合物作为聚合物表面活性剂用于相分离法制备微胶囊
DOI：
10.1080/02652040601162699
复制
发表时间：
2007
影响因子：
3.9
通讯作者：
Y. Kitamura
中科院分区：
文献类型：
--
作者：
H. Yoshizawa;Eiji Kamio;E. Kobayashi;J. Jacobson;Y. Kitamura
采用多种水溶性聚合物，考察了用于交联聚脲微胶囊制备的聚乙稀-马来酸酐乳化剂的选择。采用水溶性大分子量交替共聚物，即聚烯烃-马来酸酐、聚烯烃-马来酸和聚丙烯酸，成功制备了微胶囊。另一方面，小分子量的烯烃-马来酸交替共聚物不会产生微胶囊。根据这些结果，得出了适合交联聚脲微胶囊的聚合物表面活性剂的选择准则。聚合表面活性剂必须含有马来酸或羧基，才能形成交联聚脲微胶囊膜。此外，为了形成更坚固的胶囊膜，需要具有顺丁二烯酸酐基团。聚合物表面活性剂具有合适的分子量对膜的形成也很重要。
Various water-soluble polymers were used to examine an alternative emulsifier for poly(ethylene-alt-maleic anhydride), used in the preparation of crosslinked polyurea microcapsules. Microcapsules were successfully prepared by using the water-soluble polymers with large molecular weight alternating copolymers, namely poly(olefin-maleic anhydride), poly(olefin-maleic acid), and poly(acrylic acid). On the other hand, no microcapsule resulted from olefin-maleic acid with small molecular weight alternating copolymers. From these results, the following guidelines were obtained for the selection of polymeric surfactants suitable for crosslinked polyurea microcapsule. A polymeric surfactant must have maleic acid or a carboxyl group in order to form a crosslinked polyurea microcapsule membrane. Furthermore, to form a stronger capsule membrane it is desirable to have a maleic anhydride group. It is also important for membrane formation that the polymeric surfactant has a suitable molecular weight.