Synthesis of Hyperbranched Polymers with Pendent Norbornene Functionalities via RAFT Polymerization of a Novel Asymmetrical Divinyl Monomer

doi:10.1021/ma9005796

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	Synthesis of Hyperbranched Polymers with Pendent Norbornene Functionalities via RAFT Polymerization of a Novel Asymmetrical Divinyl Monomer
	Dong, Zhong-min 1,2; Liu, Xiao-hui 1; Tang, Xiu-lan 3; Li, Yue-sheng 1,3
刊名	MACROMOLECULES
	2009-07-14
卷号	42 期号:13 页码:4596-4603
ISSN号	0024-9297
DOI	10.1021/ma9005796
英文摘要	Hyperbranched polymers with numerous pendent norbornene functionalities have been synthesized via the radical polymerization of a novel asymmetrical divinyl monomer hearing a higher reactivity methacrylate group and it lower reactivity norbornene group. Mediated by a rapid reversible addition-fragmentation chain transfer (RAFT) equilibrium, the concentration of polymeric chain radicals is decreased, and thus the gelation did not occur until higher monomer conversions (ca. 90%). An increase in reaction temperature call also significantly promote the formation of the hyperbranched structure owing to the decreased stability of the intermediate radicals derived from the norbornene group, which was confirmed by a model copolymerization system of two single vinyl monomers with similar structures to the vinyl groups in the asymmetrical divinyl monomer. Furthermore, Tri-SEC and conventional Sin-SEC as well as (1)H NMR. analyses show that hyperbranched structures and higher molecular weights were formed at moderate-to-high monomer conversion stage, whereas the early polymerization stage only afforded linear polymers with a relatively narrower molecular weight distribution.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000268138500040
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/67605]
专题	中国科学院化学研究所
通讯作者	Li, Yue-sheng
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Changchun Branch, Changchun 130022, Peoples R China 3.Yanshan Univ, Coll Environm & Chem Engn, Qinhuangdao 066004, Peoples R China
推荐引用方式 GB/T 7714	Dong, Zhong-min,Liu, Xiao-hui,Tang, Xiu-lan,et al. Synthesis of Hyperbranched Polymers with Pendent Norbornene Functionalities via RAFT Polymerization of a Novel Asymmetrical Divinyl Monomer[J]. MACROMOLECULES,2009,42(13):4596-4603.
APA	Dong, Zhong-min,Liu, Xiao-hui,Tang, Xiu-lan,&Li, Yue-sheng.(2009).Synthesis of Hyperbranched Polymers with Pendent Norbornene Functionalities via RAFT Polymerization of a Novel Asymmetrical Divinyl Monomer.MACROMOLECULES,42(13),4596-4603.
MLA	Dong, Zhong-min,et al."Synthesis of Hyperbranched Polymers with Pendent Norbornene Functionalities via RAFT Polymerization of a Novel Asymmetrical Divinyl Monomer".MACROMOLECULES 42.13(2009):4596-4603.