Well-defined higher-molecular-weight polyacrylonitrile via RAFT technique in the presence of disulfide compounds as a source of chain transfer agent

doi:10.1016/j.eurpolymj.2008.01.031

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	Well-defined higher-molecular-weight polyacrylonitrile via RAFT technique in the presence of disulfide compounds as a source of chain transfer agent
	Liu, Xiao-hui 1; Zhang, Gui-bao 1; Li, Bai-xiang 1; Bai, Yun-gang 1; Pan, Ding 2; Li, Yue-sheng 1
刊名	EUROPEAN POLYMER JOURNAL
	2008-04-01
卷号	44 期号:4 页码:1200-1208
关键词	Reversible Addition-fragmentation Chain Transfer (Raft) Disulfide Compounds Molecular Weight Kinetics Polyacrylonitrile
ISSN号	0014-3057
DOI	10.1016/j.eurpolymj.2008.01.031
英文摘要	Well-defined polyacrylonitrile with a higher number-average molecular weight (R.) up to 200,000 and a lower polydispersity index (PDI, 1.7-2.0) was firstly obtained via reversible addition-fragmentation chain transfer (RAFT) process. This was achieved by selecting a stable, easy way to prepare disulfide compound intermediates including bis(thiobenzoyl) disulfide (BTBDS) and bis(thiophenylacetoyl) disulfide (BTPADS) to react with azobis(isobutyronitrile) to directly synthesize RAFT agents in situ. The polymerization of acrylonitrile (AN) displays the characteristics of controlled/living radical polymerization as evidenced by pseudo first-order kinetics of polymerization, linear evolution of molecular weight with increasing monomer conversion, and narrow PDIs. The polymerization rate and the efficiency for producing RAFT agent of BTPADS system are obviously higher than those of BTBDS system, whereas the control of the latter over the polymerization is superior to that of the former. H-1 NMR analysis has confirmed the dithioester chain-end functionality of the resultant polymer. The RAFT copolymerizations of AN and the comonomers including methyl acrylate, itaconic acid, methyl methacrylate, n-butyl acrylate, 2-hydroxyethyl acrylate, and acrylamide were also successfully carried out using the same polymerization system. (c) 2008 Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000255625600026
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/64899]
专题	中国科学院化学研究所
通讯作者	Li, Yue-sheng
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiao-hui,Zhang, Gui-bao,Li, Bai-xiang,et al. Well-defined higher-molecular-weight polyacrylonitrile via RAFT technique in the presence of disulfide compounds as a source of chain transfer agent[J]. EUROPEAN POLYMER JOURNAL,2008,44(4):1200-1208.
APA	Liu, Xiao-hui,Zhang, Gui-bao,Li, Bai-xiang,Bai, Yun-gang,Pan, Ding,&Li, Yue-sheng.(2008).Well-defined higher-molecular-weight polyacrylonitrile via RAFT technique in the presence of disulfide compounds as a source of chain transfer agent.EUROPEAN POLYMER JOURNAL,44(4),1200-1208.
MLA	Liu, Xiao-hui,et al."Well-defined higher-molecular-weight polyacrylonitrile via RAFT technique in the presence of disulfide compounds as a source of chain transfer agent".EUROPEAN POLYMER JOURNAL 44.4(2008):1200-1208.