Controlling degradation and branching reactions of polypropylene by different heteroaromatic ring derivatives

	Controlling degradation and branching reactions of polypropylene by different heteroaromatic ring derivatives
	Wan D ; Ma L ; Zhang ZJ ; Xing HP ; Wang L ; Jiang ZW ; Zhang GC ; Tang T
刊名	polymer degradation and stability
	2012
卷号	97 期号:1 页码:40-48
关键词	BOND-DISSOCIATION ENERGIES ISOTACTIC POLYPROPYLENE GROUP ELECTRONEGATIVITIES METHYL RADICALS MELT STRENGTH LONG RHEOLOGY PROPYLENE EXTRUSION THIOPHENE
ISSN号	0141-3910
通讯作者	ma l
中文摘要	heteroaromatic ring derivatives with the c=c bond conjugated with different five-membered heteroaromatic rings were used to adjust melt reaction of polypropylene (pp). the effect of heteroatoms in the five-membered rings and electron-attracting groups connecting with c=c bond on restricting the beta-scission of pp macroradicals and promoting the branching reaction between pp and trimethylol propane triacrylate (tmpta) was studied. from the analysis of the results concerning molecular structures and melt properties, it was found that the electron density of the c=c bond determined the reaction rate between pp macroradicals and heteroaromatic ring derivatives. 2-cyano-3-(furan-2-yl)-2-propenoic acid ethyl ester (cfa) and 2-(furan-2-ylmethylene)malononitrile (fn) had c=c bonds with lower electron density, therefore they can quickly convert the tertiary pp macroradicals into resonance stabilized macroradicals. as a result, the beta-scission of pp macroradicals and the homopolymerisation of tmpta were restrained to some extent. modified pp samples containing tmpta, peroxide and cfa (or fn), which had the lower grafting degree of tmtpa, showed the most obvious change on the relaxation behaviour of polymer chains. (c) 2011 elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000299607100006
公开日期	2013-08-29
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/48718]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Wan D,Ma L,Zhang ZJ,et al. Controlling degradation and branching reactions of polypropylene by different heteroaromatic ring derivatives[J]. polymer degradation and stability,2012,97(1):40-48.
APA	Wan D.,Ma L.,Zhang ZJ.,Xing HP.,Wang L.,...&Tang T.(2012).Controlling degradation and branching reactions of polypropylene by different heteroaromatic ring derivatives.polymer degradation and stability,97(1),40-48.
MLA	Wan D,et al."Controlling degradation and branching reactions of polypropylene by different heteroaromatic ring derivatives".polymer degradation and stability 97.1(2012):40-48.