ICCAS OpenIR
Well-defined higher-molecular-weight polyacrylonitrile via RAFT technique in the presence of disulfide compounds as a source of chain transfer agent
Liu, Xiao-hui1; Zhang, Gui-bao1; Li, Bai-xiang1; Bai, Yun-gang1; Pan, Ding2; Li, Yue-sheng1
2008-04-01
Source PublicationEUROPEAN POLYMER JOURNAL
ISSN0014-3057
Volume44Issue:4Pages:1200-1208
AbstractWell-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.
KeywordReversible Addition-fragmentation Chain Transfer (Raft) Disulfide Compounds Molecular Weight Kinetics Polyacrylonitrile
DOI10.1016/j.eurpolymj.2008.01.031
Indexed BySCI
Language英语
WOS IDWOS:000255625600026
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/64900
Collection中国科学院化学研究所
Corresponding AuthorLi, Yue-sheng
Affiliation1.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
Recommended Citation
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.
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