文献类型：期刊文献

英文题名：A self-assembled nanostructure from an amphiphilic aromatic polyester containing siloxane and poly(phenylene oxide) in epoxy resin

作者：Zhou, Quan[1];Zhang, Jinyi[1];Liu, Min[1];Wang, Fang[1]

机构：[1]East 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：2022

卷号：29

期号：6

外文期刊名：JOURNAL OF POLYMER RESEARCH

收录：;EI(收录号：20222112145493);WOS:【SCI-EXPANDED(收录号:WOS:000799511100004)】；

基金：This work has been supported by The Fundamental Research Funds for the Central Universities (project No. 50321042017001)

语种：英文

外文关键词：Thermosetting resins; Nanostructure; Self-assembly; Mechanical properties

摘要：A novel amphiphilic aromatic polyester (PPM) containing polydimethylsiloxane (PDMS) and poly(phenylene oxide) (PPO) was synthesized by one-pot polymerization and characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). PPM was self-assembled in the epoxy resin (ER) to form different nanophase separation structures, and the internal and surface morphology evolution was observed by transmission electron microscope (TEM) and scanning electron microscope (SEM), respectively. The morphology of the nano-microphase was interconnected from spherical particles to "neuron" structures, and transformed into a worm-like structure, which toughened and strengthened the epoxy matrix without sacrificing its glass transition temperature (T-g). It has been verified by fracture toughness investigation (K-IC), dynamic mechanical thermal analysis (DMA) and differential scanning calorimeter (DSC) that the K-IC, storage modulus and the T-g of nanodomain thermosets was increased by 90.0%, 86.9% and 8.7 degrees C compared with neat ER.