文献类型：期刊文献

英文题名：Multicompartmental Hollow Micelles Formed by Linear ABC Triblock Copolymers in Aqueous Medium

作者：Lin, Shaoliang[1];Zhu, Wenjie[1];He, Xiaohua[2];Xing, Yaohui[1];Liang, Liyuan[2];Chen, Tao[1];Lin, Jiaping[1]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat, Minist Educ,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]E China Normal Univ, Dept Chem, Shanghai 200241, Peoples R China

年份：2013

卷号：117

期号：8

起止页码：2586

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY B

收录：;EI(收录号：20131116106877);WOS:【SCI-EXPANDED(收录号:WOS:000315707900040)】；

基金：This work was supported by National Natural Science Foundation of China (51103044, 21174038, and 50925308). Support from Projects of Shanghai Municipality (11QA1401600, 13ZZ041, and 12JC1403102) and Fundamental Research Funds for the Central Universities (20100074120001, NCET-12-0857, and WD1213002) is also appreciated.

语种：英文

外文关键词：High resolution transmission electron microscopy - Micelles - Light scattering - Phase separation - Hydrophilicity - Scanning electron microscopy - Aggregates - Block copolymers - Polyethylene oxides - Self assembly

摘要：Self-assembly behavior of an ABC triblock copolymer, poly(ethylene glycol)-b-polystyrene-b-poly(epsilon-caprolactone) (PEG-b-PS-b-PCL), in aqueous media is presented. The formed micelle structures were analyzed by using transmission electron microscopy, scanning electron microscopy, and laser light scattering. Various fascinating multicompartmental aggregates, including multilamellar vesicles, cylinder-containing vesicles, entrapped vesicles, and porous large compound micelles, were prepared from four copolymers with various block lengths of PEG and PS. The phase separation of hydrophobic PS and PCL blocks, as well as the hydrophilic/hydrophobic balance, plays a crucial role on the self-assembly behaviors. The mechanism regarding the formation of these fascinating aggregates is also suggested.