文献类型：期刊文献

英文题名：Synthesis and self-assembly of stearic acid-poly (ethylene glycol) block copolymer

作者：Lv, Xizhi[1]; Zhang, Yan[1]; Liu, Yujian[1]

机构：[1] Key Laboratory of Special Functional Polymers and Related Technology, Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai, 200237, China

年份：2018

卷号：397

期号：1

外文期刊名：IOP Conference Series: Materials Science and Engineering

收录：EI(收录号：20183805838429)

语种：英文

外文关键词：High resolution transmission electron microscopy - Critical micelle concentration - Dynamic light scattering - Ethylene glycol - Polyethylene oxides - Self assembly - Polyols - Fluorescence spectroscopy - Micelles - Block copolymers - Solutions - Stearic acid

摘要：Stearic acid-poly(ethylene glycol) (STA-PEG) block copolymers with different hydrophilic segment length were successfully synthesized by the mild esterification. And self-assembly behaviour of the STA-PEGwas followed by fluorescence spectroscopy, dynamic light scattering (DLS) and transmission electron microscopy (TEM). The results show that the sphere micelles are formed with the STA block as the core and PEG block as the shell in aqueous solution. In addition, with the increase of PEG block length, the diameters of micelles increase from 148nm to 228nm, and the critical micelle concentration (CMC) decreased from 0.0013mg/ml to 0.0004mg/ml. The very low CMC value indicated that the STA-b-PEG can self-assemble into micelles easily and the formed micelles were stable in very dilute solution ? Published under licence by IOP Publishing Ltd.