Facile, Efficient Functionalization of Polyethylene via Regioselective Copolymerization of Ethylene with Cyclic Dienes

	Facile, Efficient Functionalization of Polyethylene via Regioselective Copolymerization of Ethylene with Cyclic Dienes
	Hong M ; Pan L ; Ye WP ; Song DP ; Li YS
刊名	journal of polymer science part a-polymer chemistry
	2010
卷号	48 期号:8 页码:1764-1772
关键词	NONBRIDGED HALF-TITANOCENES REPEATED 1 MEDIATED OLEFIN POLYMERIZATION 2-INSERTION MAO CATALYST SYSTEMS TITANIUM COMPLEXES METALLOCENE/MAO CATALYST LIVING COPOLYMERIZATION NONCONJUGATED DIENES REACTIVITY RATIOS BLOCK-COPOLYMERS
ISSN号	0887-624x
通讯作者	li ys
中文摘要	the copolymerizations of ethylene with cyclic dienes [dicyclopentadiene (dcpd) and 2,5-norbornadiene (nbd(] using bis(beta-enaminoketonato)titanium complexes [phn = c(r-2)chc(r-1)o](2)ticl2 (1a: r-1 = cf3, r-2 = ch3; 1b: r-1 = t-bu, r-2 = cf3; 1c: r-1 = ph, r-2 = cf3) have been investigated. in the presence of modified methylaluminoxane, these complexes exhibited high catalytic activities in the copolymerization of ethylene with dcpd or nbd, affording high molecular weight copolymers with unimodal molecular weight distributions. h-1 and c-13-nmr spectra reveal ethylene/dcpd copolymerizations by catalysts la c proceeds through the enchainment of norbornene ring. catalysts la and 1c showed a tendency to afford alternating copolymers. more noticeably, catalysts 1b and 1c bearing bulky substituents on the ligands promote ethylene/nbd copolymerization without crosslinking, affording the copolymer containing intracyclic double bonds. the nbd incorporation as high as 27.2 mol % has been achieved by catalyst 1c. moreover, the microstructures of the copolymers were further confirmed by the measurement of reactivity ratios and dyad monomer sequences as well as mean sequence lengths. the intracyclic double bonds of ethylene/dcpd or ethylene/nbd copolymers can be fully converted into polar groups such as epoxy, amine, silane, and hydroxyl groups under mild conditions. convenient synthesis of hydroxylated polyethylene can be provided for the first time through the ring opening reaction of epoxide. (c) 2010 wiley periodicals, inc. j polym sci part a: polym chem 48: 1764-1772, 2010
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000276976300010
公开日期	2012-06-06
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43765]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Hong M,Pan L,Ye WP,et al. Facile, Efficient Functionalization of Polyethylene via Regioselective Copolymerization of Ethylene with Cyclic Dienes[J]. journal of polymer science part a-polymer chemistry,2010,48(8):1764-1772.
APA	Hong M,Pan L,Ye WP,Song DP,&Li YS.(2010).Facile, Efficient Functionalization of Polyethylene via Regioselective Copolymerization of Ethylene with Cyclic Dienes.journal of polymer science part a-polymer chemistry,48(8),1764-1772.
MLA	Hong M,et al."Facile, Efficient Functionalization of Polyethylene via Regioselective Copolymerization of Ethylene with Cyclic Dienes".journal of polymer science part a-polymer chemistry 48.8(2010):1764-1772.