文献类型：期刊文献

英文题名：Nanostructured epoxy thermoset templated by an amphiphilic PCL-b-PES-b-PCL triblock copolymer

作者：Xu, Qilei[1];Zhou, Quan[1];Shen, Kang[1];Jiang, Deyi[1];Ni, Lizhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2016

卷号：54

期号：3

起止页码：424

外文期刊名：JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS

收录：;EI(收录号：20154301419887);WOS:【SCI-EXPANDED(收录号:WOS:000366513700007)】；

基金：The authors are indebted to the Key Laboratory of Specially Functional Polymeric Materials and Related Technology of Ministry of Education. Finance support from the Key Project in Technology Research of Shanghai, China (Project No. 12dz1100404) is also greatly appreciated.

语种：英文

外文关键词：block copolymers; epoxy resin; nanocomposites; nanostructures; reaction-induced microphase separation; resins

摘要：The PCL-b-PES-b-PCL triblock copolymer is used to incorporate into epoxy resin when the blends are cured with 4,4'-diaminodiphenylsulfone (DDS) to afford the nanostructured epoxy thermosets. The differential scanning calorimetry (DSC) and Fourier transform-infrared spectroscopy (FT-IR) show that the nanostructured PCL-b-PES-b-PCL thermosets are accessed through the formation of the intermolecular hydrogen bonding interactions. The nanostructures are further evidenced by means of small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). By considering the miscibility of the subchains of block copolymer with epoxy before and after the curing reaction, it is judged that the formation of the nanostructures follows the mechanism of reaction-induced microphase separation. It is noted that the epoxy resin is significantly toughened in terms of the measurement of critical stress field intensity factor (K-IC). (c) 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 424-432