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	A novel rate-accelerating radiocal polymerization of additive for atom transfer styrene
	Zhuang, Jiaming ; Lin, Rui ; Huang, Jianying ; Chu, Jiayan ; Lin, Xurcing ; Luo, Yutai ; Zou, Yousi ; Zou YS(邹友思)
	2007-07
关键词	additives atom transfer radical polymerization (ATRP) malononitrile polystyrene rate-accelerating
英文摘要	The polymerization of styrene was mediated by copper (1) bromide/pentramethldiethyltriamine (PMDETA) using ethyl 2-bromopropionate (EBP) as initiator and a catalytic amount of malononitrile (MN) as a novel rate-accelerating additive. The optimal molar ratios of MN/EBP under which the polymerization of styrene can proceed fastest was 4:1. The rate-enhancement-efficiency had a dependence on temperature and the apparent rate constant of polymerization improved by a factor of 2.67 at 85 degrees C. Polymerization resulted in a conversion as high as 87% in 4.3 h in the presence of MN, while a conversion of 79.7% was gained even in 10 h without MN at 85 degrees C. The polymerizations of styrene in the presence of MN proceeded in a living fashion indicated by the first-order kinetic plots, with the increase of M-n with respect to conversion and the relatively narrow polydispersity. The possible rate enhancing mechanism is that the addition of MN weakens the coordination between the copper center and ligand and facilitates the atom transfer process.
语种	英语
出版者	JOHN WILEY & SONS INC
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1002/pola.22217]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Zhuang, Jiaming,Lin, Rui,Huang, Jianying,et al. A novel rate-accelerating radiocal polymerization of additive for atom transfer styrene[J],2007.
APA	Zhuang, Jiaming.,Lin, Rui.,Huang, Jianying.,Chu, Jiayan.,Lin, Xurcing.,...&邹友思.(2007).A novel rate-accelerating radiocal polymerization of additive for atom transfer styrene..
MLA	Zhuang, Jiaming,et al."A novel rate-accelerating radiocal polymerization of additive for atom transfer styrene".(2007).

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