Kinetics and mechanism of 2-ethoxy-2-oxo-1,3,2-dioxaphospholane polymerization initiated by stannous octoate

doi:10.1021/ma0615396

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	Kinetics and mechanism of 2-ethoxy-2-oxo-1,3,2-dioxaphospholane polymerization initiated by stannous octoate
	Xiao, Chun-Sheng ; Wang, Yu-Cai ; Du, Jin-Zhi ; Chen, Xue-Si ; Wang, Jun
刊名	MACROMOLECULES
	2006-10-03
卷号	39 期号:20 页码:6825-6831
ISSN号	0024-9297
DOI	10.1021/ma0615396
英文摘要	The ring-opening polymerization (ROP) of the cyclic phosphoester 2-ethoxy-2-oxo-1,3,2-dioxaphospholane (EEP) in tetrahydrofuran solution with co-initiation of stannous octoate and dodecanol yields poly(ethylene ethlyl phosphate) (PEEP) with defined linear molecular structure. NMR analyses reveal every molecule of dodecanol starts growth of one PEEP chain and each polymer chain bears one hydroxyl end group. Kinetics studies for different co-initiator ratios and temperatures reveal that the ROP is a first-order reaction with respect to EEP monomer and suggest the formation of active center stannous alkoxide and a coordination-insertion polymerization mechanism. Side chain transfer leading to branched polymeric structure was observed particularly when the reaction time was extended after monomer consumption reaching equilibrium due to the pentavalent nature of phosphorus. By controlling the polymerization conditions, such side reaction can be suppressed to synthesize polyphosphoester with confined structure. This polymerization procedure is expected to facilitate the synthesis of polyphosphoesters with defined molecular architectures and properties for further biomedical applications.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000240752900008
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/58491]
专题	中国科学院化学研究所
通讯作者	Wang, Jun
作者单位	1.Univ Sci & Technol China, Sch Life Sci, Dept Polymer Sci & Engn, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Chun-Sheng,Wang, Yu-Cai,Du, Jin-Zhi,et al. Kinetics and mechanism of 2-ethoxy-2-oxo-1,3,2-dioxaphospholane polymerization initiated by stannous octoate[J]. MACROMOLECULES,2006,39(20):6825-6831.
APA	Xiao, Chun-Sheng,Wang, Yu-Cai,Du, Jin-Zhi,Chen, Xue-Si,&Wang, Jun.(2006).Kinetics and mechanism of 2-ethoxy-2-oxo-1,3,2-dioxaphospholane polymerization initiated by stannous octoate.MACROMOLECULES,39(20),6825-6831.
MLA	Xiao, Chun-Sheng,et al."Kinetics and mechanism of 2-ethoxy-2-oxo-1,3,2-dioxaphospholane polymerization initiated by stannous octoate".MACROMOLECULES 39.20(2006):6825-6831.