| 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
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| Source Publication | Science in China Series B-Chemistry
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| 2009 | |
| Volume | 52Issue:12Pages:2307-2322 |
| ISSN | 1006-9291 |
| Abstract | 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 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000272917200039 |
| WOS Keyword | TRANSFER RADICAL POLYMERIZATION ; METHYL-METHACRYLATE ; AMBIENT-TEMPERATURE ; SILICON SURFACES ; AQUEOUS-MEDIA ; BRUSHES ; POLYMERS ; DENSITY ; GOLD ; MONOLAYERS |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| Funding Organization | Nationd Natural Science Foundation of China [20604402] ; Natural Science Foundation of Beijing [2072008] ; National Basic Research Program of Chian [2009CB320300] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/43689 |
| Collection | 微重力重点实验室 |
| Recommended Citation 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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