Quartz crystal microbalance study of the kinetics of surface initiated polymerization

doi:10.1007/s11426-009-0225-6

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	Quartz crystal microbalance study of the kinetics of surface initiated polymerization
	Chen XA; Zhang YZ; He JA; Xiong CY; Meng YH(孟永宏); Jin G(靳刚); Ma HW
发表期刊	Science in China Series B-Chemistry
	2009
卷号	52 期号:12 页码:2307-2322
ISSN	1006-9291
摘要	Surface initiated polymerization (SIP) is a valuable tool in synthesizing functional polymer brushes, yet the kinetic understanding of SIP lags behind the development of its application. We apply quartz crystal microbalance (QCM) to address two issues that are not fully addressed yet play a central role in the rational design of functional polymer brushes, namely quantitative determination of the kinetics and the initiator efficiency (IE) of SIP. SIP are monitored online using QCM. Two quantitative frequency-thickness (f-T) relations make the direct determination and comparison of the rate of polymerization possible even for different monomers. Based on the bi-termination model, the kinetics of SIP is simply described by two variables, which are related to two polymerization constants, namely a = 1/(k (p,s,app)-[M][R center dot](0)) and b = k (t,s,app)/(k (p,s,app)[M]). Factors that could alter the kinetics of SIP are studied, including (i) the molecular weight of monomers, (ii) the solvent used, (iii) the initial density of the initiator, (iv) the concentration of monomer, [M], and (v) the catalyst system (ratio among the ingredients, metal, ligands, and additives). The dynamic nature of IE is also described by these two variables, IE = a/(a + bt). Instead of the molecular weight and the polydispersity, we suggest that film thickness, the two kinetic parameters (a and b), and the initial density of the initiator and IE be the parameters that characterize ultra-thin polymer brushes. Besides the kinetics study of SIP, the reported method has many other applications, for example, in the fast screening of catalyst system for SIP and other polymerization systems.
DOI	10.1007/s11426-009-0225-6
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000272917200039
关键词[WOS]	TRANSFER RADICAL POLYMERIZATION ; METHYL-METHACRYLATE ; AMBIENT-TEMPERATURE ; SILICON SURFACES ; AQUEOUS-MEDIA ; BRUSHES ; POLYMERS ; DENSITY ; GOLD ; MONOLAYERS
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
项目资助者	Nationd Natural Science Foundation of China [20604402] ; Natural Science Foundation of Beijing [2072008] ; National Basic Research Program of Chian [2009CB320300]
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/43689
专题	微重力重点实验室
推荐引用方式 GB/T 7714	Chen XA,Zhang YZ,He JA,et al. Quartz crystal microbalance study of the kinetics of surface initiated polymerization[J]. Science in China Series B-Chemistry,2009,52,12,:2307-2322.
APA	Chen XA.,Zhang YZ.,He JA.,Xiong CY.,孟永宏.,...&Ma HW.(2009).Quartz crystal microbalance study of the kinetics of surface initiated polymerization.Science in China Series B-Chemistry,52(12),2307-2322.
MLA	Chen XA,et al."Quartz crystal microbalance study of the kinetics of surface initiated polymerization".Science in China Series B-Chemistry 52.12(2009):2307-2322.

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