Vinyl/Vinylene functionalized highly branched polyethylene waxes obtained using electronically controlled cyclohexyl-fused pyridinylimine-nickel precatalysts

doi:10.1002/pola.29008

	Vinyl/Vinylene functionalized highly branched polyethylene waxes obtained using electronically controlled cyclohexyl-fused pyridinylimine-nickel precatalysts
	Guo, JJ ; Zhang, WJ ; Mahmood, Q ; Zhang, RD ; Sun, Y ; Sun, WH
刊名	JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
	2018-06-15
卷号	56 期号:12 页码:1269-1281
关键词	cationic polymerization metal-organic catalysts polyethylene waxes
ISSN号	0887-624X
DOI	10.1002/pola.29008
英文摘要	A series of 8-(2,6-dibenzhydryl-4-R-phenylimino)-5,6,7-trihydroquinoline ligands have been prepared in which the nature of 4-R substitutions vary from electron withdrawing to electron donating. The treatment with NiCl2.6H(2)O or (DME)NiBr2 afforded the corresponding complexes of nickel chloride (4-R=Me Ni1, Et Ni2, Bu-t Ni3, CHPh2 Ni4, Cl Ni5, and F Ni6) and nickel bromide (4-R=Me Ni7, Et Ni8, Bu-t Ni9, CHPh2 Ni10, Cl Ni11, and F Ni12). X-ray diffraction study of complexes Ni3, Ni6, and Ni10, revealed that Ni3.1/2H(2)O and Ni6.H2O adopted unsymmetrical and symmetrical chloride-bridged dinuclear structures respectively, while Ni10.H2O is found as mononuclear specie forming distorted-square planer geometry. In the presence of either diethylaluminum chloride (Et2AlCl) or modified methylaluminoxane (MMAO), all the nickel complexes (Ni1-Ni12) displayed high activities (up to 1.91 x 10(6) g(PE) mol (Ni)(-1)h(-1). Highly branched polyethylene waxes with low molecular weights (M(w)2.6 kg/mol) and narrow molecular weights distributions (M-w/M(n)1.96) incorporated with vinylene and vinyl groups were obtained. The effects of 4-R substitutions to the nickel chloride and bromide pre-catalysts and reaction conditions on the catalytic performance and the properties of the resulting polyethylene were the subject of a detail investigation. The positive influences of using electron-withdrawing 4-R substitutions and bromides were observed. (c) 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 1269-1281
语种	英语
出版者	WILEY
WOS记录号	WOS:000431658400008
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/41969]
专题	化学研究所_工程塑料实验室
作者单位	1.Zhang, WJ (reprint author), Beijing Inst Fash Technol, Beijing Engn Res Ctr Text Nanofiber, Sch Mat Sci & Engn, Beijing Key Lab Clothing Mat R&D & Assessment, Beijing 100029, Peoples R China. 2.Zhang, WJ 3.Sun, WH (reprint author), Chinese Acad Sci, Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China. 4.Zhang, WJ 5.Sun, WH (reprint author), Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China. 6.Sun, WH (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Gansu, Peoples R China.
推荐引用方式 GB/T 7714	Guo, JJ,Zhang, WJ,Mahmood, Q,et al. Vinyl/Vinylene functionalized highly branched polyethylene waxes obtained using electronically controlled cyclohexyl-fused pyridinylimine-nickel precatalysts[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2018,56(12):1269-1281.
APA	Guo, JJ,Zhang, WJ,Mahmood, Q,Zhang, RD,Sun, Y,&Sun, WH.(2018).Vinyl/Vinylene functionalized highly branched polyethylene waxes obtained using electronically controlled cyclohexyl-fused pyridinylimine-nickel precatalysts.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,56(12),1269-1281.
MLA	Guo, JJ,et al."Vinyl/Vinylene functionalized highly branched polyethylene waxes obtained using electronically controlled cyclohexyl-fused pyridinylimine-nickel precatalysts".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 56.12(2018):1269-1281.