文献类型：期刊文献

英文题名：Tuning the morphology of amphiphilic copolymer aggregates by compound emulsifier via emulsion-solvent evaporation

作者：Gao, Xiaomei[1];Gao, Fei[1];Chen, Lingzhi[1];Yao, Yuan[1];Chen, Tao[1];Lin, Shaoliang[1]

机构：[1]East 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

年份：2018

卷号：22

期号：3

起止页码：297

外文期刊名：JOURNAL OF SAUDI CHEMICAL SOCIETY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000426734000005)】；

基金：This work was supported by National Natural Science Foundation of China (51573046 and 51573088). Support from Projects of Shanghai Municipality (14SG29) and Fundamental Research Funds for the Central Universities (NCET-12-0857, B14018 and WD1213002) is also appreciated.

语种：英文

外文关键词：Emulsion-solvent evaporation; Compound emulsifier; HLB value; Aggregate structure

摘要：A series of poly(4-vinylpyridine)-b-poly{6-[4-(4-butyloxyphenylazo)phenoxy]hexyl methacrylate} (P4VP-b-PAzoMA) were employed to fabricate aggregates via the emulsion-solvent evaporation method. The emulsion was stabilized by compound emulsifier composed of SDS and span60. By tuning the ratio of two emulsifiers, P4VP-b-PAzoMA could self-assemble into various morphologies including porous microspheres, tremella-like aggregates, bowl-like aggregates and wrinkled microspheres. The transformation of the morphologies could be ascribed to three major aspects: the stability of emulsified chloroform droplets, the permeation of water into chloroform and the dispersity of the interior water droplets with regard to different HLB values. Besides, the morphology could even be tuned by changing the block ratio and the concentration of P4VP-b-PAzoMA, and the HLB dependent morphology changing was also proved within other block ratio or different concentration. The study uncovers a convenient and effective technique to manipulate the morphology of amphiphilic copolymer aggregates. (C) 2016 King Saud University. Production and hosting by Elsevier B.V.