Quartz crystal microbalance study of the kinetics of surface initiated polymerization
文献类型：期刊论文
| 作者 | Ma HW(马宏伟) ; Ma HW(马宏伟)
|
| 刊名 | Science in China Series B-Chemistry
 |
| 出版日期 | 2009-12 |
| 卷号 | 53期号:12页码:2307-2322 |
| 关键词 | surface initiated polymerization quartz crystal microbalance kinetics controlled living radical polymerization |
| 通讯作者 | Ma HW(马宏伟) |
| 合作状况 | 其它 |
| 英文摘要 | 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. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000272917200039 |
| 公开日期 | 2010-01-15 |
| 源URL | [http://58.210.77.100/handle/332007/178]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_纳米生物医学与安全研究部_马宏伟团队 |
| 通讯作者 | Ma HW(马宏伟); Ma HW(马宏伟) |
| 推荐引用方式 GB/T 7714 | Ma HW,Ma HW. Quartz crystal microbalance study of the kinetics of surface initiated polymerization[J]. Science in China Series B-Chemistry,2009,53(12):2307-2322. |
| APA | Ma HW,&Ma HW.(2009).Quartz crystal microbalance study of the kinetics of surface initiated polymerization.Science in China Series B-Chemistry,53(12),2307-2322. |
| MLA | Ma HW,et al."Quartz crystal microbalance study of the kinetics of surface initiated polymerization".Science in China Series B-Chemistry 53.12(2009):2307-2322. |
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