文献类型：期刊文献

英文题名：Effects of pendant side groups on the properties of the silicon-containing arylacetylene resins with 2,5-diphenyl-[1,3,4]-oxadiazole moieties

作者：Ma, Manping[1];Liu, Xiaotian[1];Li, Chuan[1];Qiao, Zhiyao[1];Yuan, Qiaolong[1];Huang, Farong[1]

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

年份：2021

卷号：11

期号：32

起止页码：19656

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20212410505935);WOS:【SCI-EXPANDED(收录号:WOS:000660243300033)】；

基金：The authors gratefully acknowledge the support of the Fundamental Research Funds for the Central Universities (no. JKD 01211701).

语种：英文

外文关键词：Aromatization - Aromatic hydrocarbons - Organic polymers - Silicon - Heat resistance

摘要：Silicon-containing arylacetylene resins with rigid conjugated structures in the main chain often exhibit poor processability. A strategy of improving the processability by destroying the molecular structure symmetry using side aromatic groups was proposed, and the effects of the side groups was further explored. Two novel structural resins with side aromatic phenyl and phenylacetylene groups (PODSA-2P-MM and PODSA-2E-MM) were synthesized by Grignard reaction. The side aromatic groups strongly interfere with the regular arrangement of the main chains, and the crystallinities of the resins decrease as compared with PODSA-MM resin without side aromatic groups. Due to the influence of the side aromatic groups, the novel resins exhibit good processability, low exothermic enthalpy, high modulus and good heat resistance.