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High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides
He, Aihua1; Wang, Geng1; Zhao, Weizhen2,3; Jiang, Xiubo1; Yao, Wei1; Sun, Wen-Hua2,3
2013-12-01
Source PublicationPOLYMER INTERNATIONAL
ISSN0959-8103
Volume62Issue:12Pages:1758-1766
AbstractPolyisoprene (PI) with a high content of cis-1,4 (up to 95%) or cis-1,4/3,4 binary structures was synthesized using a cobalt system in toluene. The cobalt system, which exhibited high activities (up to 3.50x10(6) g PI(mol Co)(-1)h(-1)), contained a series of 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides activated with ethylaluminium sesquichloride. The nature of the ligands and the reaction conditions significantly affected both the catalytic performance of the cobalt complexes as well as the structures of the resultant PI. The stereospecific polymerization of isoprene could be tuned via changing either the co-catalyst or solvent: for example, increased content of 3,4 PI (up to 36.6%) was achievable in heptane in the presence of diethylaluminium chloride. Sequence distribution analysis by C-13 NMR spectroscopy indicated that most 3,4 units occurred randomly in the PI chains. (c) 2013 Society of Chemical Industry
KeywordCobalt Pre-catalyst Late Transition Metal Complexes Cis-1 Cis-1 4 Polyisoprenes 4/3 4 Binary Polyisoprenes
DOI10.1002/pi.4490
Indexed BySCI
Language英语
WOS IDWOS:000326959500012
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/54620
Collection中国科学院化学研究所
Corresponding AuthorHe, Aihua
Affiliation1.Qingdao Univ Sci & Technol, Sch Polymer Sci & Engn, Key Lab Rubber Plast, Minist Educ,Shandong Prov Key Lab Rubber Plast, Qingdao 266042, Peoples R China
2.Chinese Acad Sci, Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
He, Aihua,Wang, Geng,Zhao, Weizhen,et al. High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides[J]. POLYMER INTERNATIONAL,2013,62(12):1758-1766.
APA He, Aihua,Wang, Geng,Zhao, Weizhen,Jiang, Xiubo,Yao, Wei,&Sun, Wen-Hua.(2013).High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides.POLYMER INTERNATIONAL,62(12),1758-1766.
MLA He, Aihua,et al."High cis-1,4 polyisoprene or cis-1,4/3,4 binary polyisoprene synthesized using 2-(benzimidazolyl)-6-(1-(arylimino)ethyl)pyridine cobalt(II) dichlorides".POLYMER INTERNATIONAL 62.12(2013):1758-1766.
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