文献类型：期刊文献

英文题名：Reaction-induced microphase separation in DDS-cured TGDDM thermosets containing PCL-b-PES-b-PCL triblock copolymer

作者：Shen, Kang[1];Zhou, Quan[1];Xu, Qilei[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：2015

卷号：5

期号：75

起止页码：61070

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20153001060747);WOS:【SCI-EXPANDED(收录号:WOS:000358229500051)】；

基金：This work was financially supported by the Scientific Research Project (No. 12dz1100404) of Shanghai Science and Technology Committee.

语种：英文

外文关键词：Curing - Thermosets - High resolution transmission electron microscopy - X ray scattering - Atomic force microscopy - Ethers - Microphase separation - Ring opening polymerization - Fourier transform infrared spectroscopy - Nanostructures - Gel permeation chromatography - Nuclear magnetic resonance spectroscopy

摘要：A triblock copolymer, poly(epsilon-caprolactone)-block-poly(ether sulfone)-block-poly(epsilon-caprolactone) (PCL-b-PES-b-PCL), was synthesized by the ring-opening polymerization of hydroxyl-terminated poly(ether sulfone) and epsilon-caprolactone monomer. The triblock copolymer was characterized via Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR) and gel permeation chromatography (GPC). The PCL-b-PES-b-PCL triblock copolymer was introduced into a N,N,N',N'-tetraglycidyl-4,4'-diaminodiphenyl methane (TGDDM) epoxy matrix cured with 4,4'-diaminodiphenylsulfone (DDS). The nanostructures were evidenced by means of atomic force microscopy (AFM), transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). It was found that PCL nanophases were formed in the thermosets and the average distance between the neighboring nano-domains was calculated by the equation L = 2 pi/q(m). The thermal stability and mechanical performance of the TGDDM thermosets were improved owing to the incorporation of the PCL-b-PES-b-PCL triblock copolymer. It was judged that the formation of the nanostructure followed the mechanism of reaction-induced microphase separation.