Elastomeric polyethylenes accessible via ethylene homo-polymerization using an unsymmetrical alpha-diimino-nickel catalyst | |
Wang, Xinxin1,2; Fan, Linlin1,2; Ma, Yanping2; Guo, Cun-Yue1; Gregory A. Solan2,3; Sun, Yang2; Sun WH(孙文华)2,4 | |
刊名 | Polymer Chemistry |
2017 | |
卷号 | 8期号:18页码:2785-2795 |
ISSN号 | 1759-9954 |
通讯作者 | Guo, Cun-Yue ; Gregory A. Solan ; 孙文华 |
英文摘要 | Five types of unsymmetrical bis(arylimino)acenaphthenes, 1-[2,4,6-(CHPh2)3C6H2N]-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-Et2-4-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 1H 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 × 107 g of PE (mol of Ni)−1 h−1), displayed good thermal stability [2.97 × 106 g of PE (mol of Ni)−1 h−1 even at 90 °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). |
学科主题 | 物理化学与绿色催化 |
收录类别 | SCI |
资助信息 | the National Natural Science Foundation of China (No. 51373176;21374123;U1362204);G. A. S. thanks the Chinese Academy of Sciences for a President's Visiting Scientist Fellowship |
语种 | 英语 |
WOS记录号 | WOS:000400979500006 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/21881] |
专题 | 兰州化学物理研究所_OSSO国家重点实验室 |
作者单位 | 1.School of Chemistry and Chemical Engineering and CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China 2.Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China 3.Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, UK 4.State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 5.Univ Leicester, Dept Chem, Univ Rd, Leicester LE1 7RH, Leics, England |
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.,Gregory A. Solan.,...&Sun WH.(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. |
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