Elastomeric polyethylenes accessible via ethylene homo-polymerization using an unsymmetrical alpha-diimino-nickel catalyst

	Elastomeric polyethylenes accessible via ethylene homo-polymerization using an unsymmetrical alpha-diimino-nickel catalyst
	Wang, Xinxin 1,2,3,4; Fan, Linlin 1,2,3,4; Ma, Yanping 3,4; Guo, Cun-Yue 1,2; Solan, Gregory A.3,4,5; Sun, Yang 3,4; Sun, Wen-Hua3,4,6
刊名	POLYMER CHEMISTRY
	2017-05-14
卷号	8 期号:18 页码:2785-2795
英文摘要	Five types of unsymmetrical bis(arylimino) acenaphthenes, 1-[2,4,6-(CHPh2)(3)C6H2N]-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-Et-2-4-MePh L5), each containing a single N-2,4,6-tribenzhydrylphenyl group, have been prepared and fully characterized. The interaction of L1-L5 with (DME)NiBr2 (DME = 1,2-dimethoxyethane) afforded the corresponding 1 : 1 nickel(II) bromide chelates, LNiBr2 (Ni1-Ni5), in good yield. Distorted tetrahedral geometries are a feature of the X-ray structures of Ni1 and Ni3; broad paramagnetically shifted peaks are seen in the H-1 NMR spectra for all the nickel complexes in solution. Upon activation with relatively low amounts of Et2AlCl or Me2AlCl (200-700 equivalents), Ni1-Ni5 exhibited exceptionally high activities for ethylene polymerization (up to 1.07 x 107 g of PE (mol of Ni)(-1) h(-1)), displayed good thermal stability [2.97 x 106 g of PE (mol of Ni)(-1) h(-1) even at 90 degrees C] and produced hyperbranched polyethylenes. Dynamic mechanical analysis and stress-strain testing reveal that the polymeric materials possess good elastomeric recovery and high elongation at break, indicating a promising alternative material to thermoplastic elastomers (TPEs).
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38388]
专题	化学研究所_工程塑料实验室
作者单位	1.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 5.Univ Leicester, Dept Chem, Univ Rd, Leicester LE1 7RH, Leics, England 6.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xinxin,Fan, Linlin,Ma, Yanping,et al. Elastomeric polyethylenes accessible via ethylene homo-polymerization using an unsymmetrical alpha-diimino-nickel catalyst[J]. POLYMER CHEMISTRY,2017,8(18):2785-2795.
APA	Wang, Xinxin.,Fan, Linlin.,Ma, Yanping.,Guo, Cun-Yue.,Solan, Gregory A..,...&Sun, Wen-Hua.(2017).Elastomeric polyethylenes accessible via ethylene homo-polymerization using an unsymmetrical alpha-diimino-nickel catalyst.POLYMER CHEMISTRY,8(18),2785-2795.
MLA	Wang, Xinxin,et al."Elastomeric polyethylenes accessible via ethylene homo-polymerization using an unsymmetrical alpha-diimino-nickel catalyst".POLYMER CHEMISTRY 8.18(2017):2785-2795.