Homo- and copolymerization of norbornene and styrene with Pd- and Ni-based novel bridged dinuclear diimine complexes and MAO

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	Homo- and copolymerization of norbornene and styrene with Pd- and Ni-based novel bridged dinuclear diimine complexes and MAO
	Mi, X ; Ma, Z ; Wang, LY ; Ke, YC ; Hu, YL
刊名	MACROMOLECULAR CHEMISTRY AND PHYSICS
	2003-04-17
卷号	204 期号:5-6 页码:868-876
关键词	Bridged Dinuclear Diimine Nickel And Palladium Complexes Catalysis Copolymerization Packing Density Vinyl Addition Polymerization
ISSN号	1022-1352
英文摘要	Novel bridged dinuclear diimine nickel and palladium complexes catalyzed the vinyl addition polymerization of norbornene at a single active site with high activity. The latter exhibited higher activity than the former. Smaller substituents around the imido group in the ligand were more favorable for increasing the activity than bulkier ones. The polynorbornenes were all noncrystalline but had short-range order and their glass transition temperature, T-g, ranged from 270 to 400degreesC. Furthermore, the random copolymerization of norbornene and styrene was catalyzed by the bridged dinuclear diimine nickel complex with MAO (methylaluminoxane). Gel permeation chromatography (GPC), FTIR and H-1 NMR spectroscopies, wide-angle X-ray diffraction (WAXD), and differential scanning calorimetry (DSC) indicated that the copolymers are "true" copolymers. The reactivity ratios were r(styrene) = 0.281, r(norbornene) = 18.7. The packing density, thermostability and the glass transition temperatures of copolymers are increased relative to polystyrene. The solubility and processability of the copolymers are improved relative to polynorbornene.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000182714600014
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/44919]
专题	中国科学院化学研究所
通讯作者	Hu, YL
作者单位	1.Chinese Acad Sci, State Key Lab Engn Plast, Ctr Mol Sci, CNPC Key Lab Catalysis,Inst Chem, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Mi, X,Ma, Z,Wang, LY,et al. Homo- and copolymerization of norbornene and styrene with Pd- and Ni-based novel bridged dinuclear diimine complexes and MAO[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS,2003,204(5-6):868-876.
APA	Mi, X,Ma, Z,Wang, LY,Ke, YC,&Hu, YL.(2003).Homo- and copolymerization of norbornene and styrene with Pd- and Ni-based novel bridged dinuclear diimine complexes and MAO.MACROMOLECULAR CHEMISTRY AND PHYSICS,204(5-6),868-876.
MLA	Mi, X,et al."Homo- and copolymerization of norbornene and styrene with Pd- and Ni-based novel bridged dinuclear diimine complexes and MAO".MACROMOLECULAR CHEMISTRY AND PHYSICS 204.5-6(2003):868-876.