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Access to polyethylene elastomers via ethylene homo-polymerization using N,N '-nickel(II) catalysts appended with electron withdrawing difluorobenzhydryl group
Wang, Yifan; Vignesh, Arumugam; Qu, Mengnan; Wang, Zheng; Sun, Yang; Sun, Wen-Hua
2019-08-01
Source PublicationEUROPEAN POLYMER JOURNAL
ISSN0014-3057
Volume117Pages:254-271
AbstractA library of five hither-to-unknown unsymmetrical N,N'-diiminoacenaphthylenes, 1-[2,4,6-{(4-FC6H4)(2)CH}(3)C6H4N]-2-(ArN)C2C10H6 (Ar = 2,6-Me2Ph L1, 2,6-Et2Ph L2, 2,6-i-Pr2Ph L3, 2,4,6-Me3Ph L4 and 2,6-E(t)2-4-Me-Ph L5), have been synthesized and used to prepare their corresponding nickel(II) halide complexes of the type LNiBr2 (Ni1-Ni5) and LNiCl2 (Ni6-Ni10). Single-crystal structures of Ni1 and Ni2 reveal the nickel center and coordination atoms formed distorted tetrahedral geometry. Upon activation with either methylaluminoxane (MAO) or diethylaluminum chloride (Et2AlCl), Ni1-Ni10 displayed high activities towards ethylene polymerization with the optimal performance being observed using Ni5 in combination with MAO (1.29 x 10(7) g of PE (mol of Ni)(-1) h(-1) at 30 degrees C), which produced high molecular weight elastomeric polyethylene (M-w = 4.6 x 10(5) g mol(-1), T-m = 47.13 degrees C) with narrow polydispersity (M-w/M-n = 2.6). Dynamic mechanical analysis (DMA) and monotonic stress-strain test has been employed on the obtained polymeric materials and reveal high tensile strength, good elastomeric recovery (up to 93.6%) and high elongational break (up to 1037.1%), which indicates a promising equivalent material to currently commercial thermoplastic elastomers (TPEs).
DOI10.1016/j.eurpolymj.2019.05.015
Indexed BySCI
Language英语
WOS IDWOS:000473842300025
EI Accession Number1873-1945
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82709
Collection中国科学院化学研究所
AffiliationChinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yifan,Vignesh, Arumugam,Qu, Mengnan,et al. Access to polyethylene elastomers via ethylene homo-polymerization using N,N '-nickel(II) catalysts appended with electron withdrawing difluorobenzhydryl group[J]. EUROPEAN POLYMER JOURNAL,2019,117:254-271.
APA Wang, Yifan,Vignesh, Arumugam,Qu, Mengnan,Wang, Zheng,Sun, Yang,&Sun, Wen-Hua.(2019).Access to polyethylene elastomers via ethylene homo-polymerization using N,N '-nickel(II) catalysts appended with electron withdrawing difluorobenzhydryl group.EUROPEAN POLYMER JOURNAL,117,254-271.
MLA Wang, Yifan,et al."Access to polyethylene elastomers via ethylene homo-polymerization using N,N '-nickel(II) catalysts appended with electron withdrawing difluorobenzhydryl group".EUROPEAN POLYMER JOURNAL 117(2019):254-271.
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