文献类型：期刊文献

英文题名：One-pot synthesis of well-defined amphiphilic alternating copolymer brushes based on POSS and their self-assembly in aqueous solution

作者：Zhang, Zhenghe[1];Hong, Lizhi[1];Li, Jinxia[1];Liu, Feng[1];Cai, Haibo[1];Gao, Yun[1];Zhang, Weian[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China

年份：2015

卷号：5

期号：28

起止页码：21580

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20151000606252);WOS:【SCI-EXPANDED(收录号:WOS:000350222400019)】；

基金：This work was. financially supported by the National Natural Science Foundation of China (no. 51173044), Research Innovation Program of SMEC (no. 14ZZ065), Shanghai Pujiang Program under 14PJ1402600 and the Project of Shanghai Colleges and Universities Experimental Technology Team Construction Plan (YJ0114206). W. Z. also acknowledges the support from the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Polydispersity - Polyethylene oxides - Polyethylenes - Solutions - Thermodynamic properties - Dynamic light scattering - Living polymerization - High resolution transmission electron microscopy - Thermogravimetric analysis - Differential scanning calorimetry - Free radical polymerization - Self assembly

摘要：Poly(maleimide isobutyl polyhedral oligomeric silsesquioxane-alt-vinylbenzyl polyethylene glycol) (P(MIPOSS-alt-VBPEG)) amphiphilic copolymer brushes with a sequence of alternating MIPOSS and polyethylene glycol (PEG) side chains were synthesized via ordinary radical polymerization and reversible addition-fragmentation transfer (RAFT) polymerization. A series of alternating copolymer brushes prepared by RAFT polymerization had a low polydispersity index (PDI) of less than 1.25. The thermal properties of these copolymers were evaluated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The results displayed that the MIPOSS units could effectively enhance the thermal properties of the hybrid copolymers. The self-assembly behavior of the P(MIPOSS-alt-VBPEG) amphiphilic copolymer brushes in aqueous media was also studied by fluorescence spectrophotometry (FS), transmission electron microscopy (TEM) and dynamic light scattering (DLS). The results showed that these alternating copolymer brushes could form spherical aggregates in water.