2-cyanoprop-2-yl dithiobenzoate mediated reversible addition-fragmentation chain transfer polymerization of acrylonitrile targeting a polymer with a higher molecular weight

	2-cyanoprop-2-yl dithiobenzoate mediated reversible addition-fragmentation chain transfer polymerization of acrylonitrile targeting a polymer with a higher molecular weight
	Liu XH ; Li YG ; Lin Y ; Li YS
刊名	journal of polymer science part a-polymer chemistry
	2007
卷号	45 期号:7 页码:1272-1281
关键词	FREE-RADICAL POLYMERIZATION TRANSFER RAFT POLYMERIZATION TERMINATION RATE COEFFICIENTS LENGTH-DEPENDENT TERMINATION METHYL ACRYLATE AB-INITIO COPOLYMERS RETARDATION PRECURSORS STYRENE
ISSN号	0887-624x
通讯作者	li ys
中文摘要	the reversible addition-fragmentation chain transfer (raft) polymerization of acrylonitrile (an) mediated by 2-cyanoprop-2-yl dithiobenzoate was first applied to synthesize polyacrylonitrile (pan) with a high molecular weight up to 32,800 and a polydispersity index as low as 1.29. the key to success was ascribed to the optimization of the experimental conditions to increase the fragmentation reaction efficiency of the intermediate radical. in accordance with the atom transfer radical polymerization of an, ethylene carbonate was also a better solvent candidate for providing higher controlled/living raft polymerization behaviors than dimethylformamide and dimethyl sulfoxide. the various experimental parameters, including the temperature, the molar ratio of dithiobenzoate to the initiator, the molar ratio of the monomer to dithiobenzoate, the monomer concentration, and the addition of the comonomer, were varied to improve the control of the molecular weight and polydispersity index. the molecular weights of pans were validated by gel permeation chromatography along with a universal calibration procedure and intrinsic viscosity measurements. h-1 nmr analysis confirmed the high chain-end functionality of the resultant polymers.
收录类别	SCI
语种	英语
WOS记录号	WOS:000244979400008
公开日期	2010-07-13
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/14321]
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	Liu XH,Li YG,Lin Y,et al. 2-cyanoprop-2-yl dithiobenzoate mediated reversible addition-fragmentation chain transfer polymerization of acrylonitrile targeting a polymer with a higher molecular weight[J]. journal of polymer science part a-polymer chemistry,2007,45(7):1272-1281.
APA	Liu XH,Li YG,Lin Y,&Li YS.(2007).2-cyanoprop-2-yl dithiobenzoate mediated reversible addition-fragmentation chain transfer polymerization of acrylonitrile targeting a polymer with a higher molecular weight.journal of polymer science part a-polymer chemistry,45(7),1272-1281.
MLA	Liu XH,et al."2-cyanoprop-2-yl dithiobenzoate mediated reversible addition-fragmentation chain transfer polymerization of acrylonitrile targeting a polymer with a higher molecular weight".journal of polymer science part a-polymer chemistry 45.7(2007):1272-1281.