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Branched polystyrene with abundant pendant vinyl functional groups from asymmetric divinyl monomer
Dong, Zhong-Min1,2; Liu, Xiao-Hui1; Lin, Ying1,2; Li, Yue-Sheng1
2008-09-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN0887-624X
Volume46Issue:18Pages:6023-6034
AbstractBranched polystyrenes with abundant pendant vinyl functional groups were prepared via radical polymerization of an asymmetric divinyl monomer, which possesses a higher reactive styryl and a lower reactive butenyl. Employing a fast reversible addition fragmentation chain transfer (RAFT) equilibrium, the concentration of active propagation chains remained at a low value and thus crosslinking did not occur until a high level of monomer conversion. The combination of a higher reaction temperature (120 degrees C) and RAFT agent cumyl dithiobenzoate was demonstrated to be optimal for providing both a more highly branched architecture and a higher polymer yield. The molecular weights (M(w)s) increased with monomer conversions because of the controlled radical polymerization characteristic, whereas the M-w distributions broadened showing a result of the gradual increase of the degree of branching. The evolution of branched structure has been confirmed by a triple detection size exclusion chromatography (TRI-SEC) and NMR technique. Furthermore, the double bonds in the side chains were successfully used for chemical modification reactions. H-1 NMR and FTIR measurements reveal that the great mass of pendant vinyl groups were converted to the corresponding objective end-groups. (C) 2008 Wiley Periodicals, Inc.
KeywordAsymmetric Divinyl Monomer Branched Controlled/living Radical Polymerization Functionalization Of Polymers Hyperbranched Reversible Addition Fragmentation Chain Transfer (Raft)
DOI10.1002/pola.22913
Indexed BySCI
Language英语
WOS IDWOS:000259325100006
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:30[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65640
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.Chinese Acad Sci, Grad Sch, Changchun Branch, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Dong, Zhong-Min,Liu, Xiao-Hui,Lin, Ying,et al. Branched polystyrene with abundant pendant vinyl functional groups from asymmetric divinyl monomer[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2008,46(18):6023-6034.
APA Dong, Zhong-Min,Liu, Xiao-Hui,Lin, Ying,&Li, Yue-Sheng.(2008).Branched polystyrene with abundant pendant vinyl functional groups from asymmetric divinyl monomer.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,46(18),6023-6034.
MLA Dong, Zhong-Min,et al."Branched polystyrene with abundant pendant vinyl functional groups from asymmetric divinyl monomer".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 46.18(2008):6023-6034.
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