Acetylene-grafted resins derived from phenolics via azo coupling   reaction

doi:10.1016/j.eurpolymj.2008.01.002

CORC > 北京大学 > 化学与分子工程学院

	Acetylene-grafted resins derived from phenolics via azo coupling reaction
	Wang, Mingcun ; Yang, Ming ; Zhao, Tong ; Pei, Jian
刊名	欧洲聚合物杂志
	2008
关键词	phenolic resins ethynyl azo coupling addition cure thermal properties ADDITION-CURE-TYPE FORMALDEHYDE MECHANISMS CHEMISTRY NOVOLAC
DOI	10.1016/j.eurpolymj.2008.01.002
英文摘要	Novel phenolic resins with high ethynyl contents were realized via azo coupling reaction between phenol units and diazonium of 3-ethynylaniline. If Novolac and high-ortho Novolac resins were used as the starting materials directly, the ratio of ethynyl groups to phenolic rings was ca 70%; while the ratio was 100% for the resin from Friedel-Craft polycondensation of 4-(3-ethynylphenyl)salicyl alcohol. All the resins were readily soluble in acetone and ethanol, and meltable at temperatures below 100 degrees C. The resins underwent thermal addition-type cure with a broad exotherm of around 140-280 degrees C, and the starting curing temperature showed a downward drift with increase in the ethynyl content. The thermal properties of the cured resins, determined from thermogravimetric analysis (TGA), were considerably superior to those of Novolac- and Resole-type phenolic resins. The initial decomposition temperatures were at ca 400 degrees C, and the anaerobic carbon yields were ca 80% for all the resins. (C) 2008 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000255604600029&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Polymer Science; SCI(E); EI; 7; ARTICLE; 3; 842-848; 44
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151513]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Mingcun,Yang, Ming,Zhao, Tong,et al. Acetylene-grafted resins derived from phenolics via azo coupling reaction[J]. 欧洲聚合物杂志,2008.
APA	Wang, Mingcun,Yang, Ming,Zhao, Tong,&Pei, Jian.(2008).Acetylene-grafted resins derived from phenolics via azo coupling reaction.欧洲聚合物杂志.
MLA	Wang, Mingcun,et al."Acetylene-grafted resins derived from phenolics via azo coupling reaction".欧洲聚合物杂志 (2008).