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聚合物刷接枝新方法与润滑研究  
聚合物刷接枝新方法与润滑研究
资料类型: JPG图片格式
关键词: polymer  brushes  ATRP  lubrication  
资料大小: 108KB
所属学科: 高分子化学
来源: 来源网络
简介:
Surface-initiated controlled radical polymerizations (SIP) from initiator-modified surfaces lead to polymer brushes with variable compositions, architectures and functionalities, as well as complex (co)polymers and organic/inorganic hybrid materials. Among the different controlled radical polymerization techniques, atom transfer radical polymerization (ATRP) is widely used for tailoring the surface chemistry and topography. However, a number of problems always exist: polymerization in inert atmosphere; less control due to fast polymerization; large amount of monomer wasted. We have developed some novel approaches that can allow SI-ATRP to proceed in ambient environment, ultrasmall volume solutions and in more controlled manner. We are particularly interested in the type of charged polymer brushes, i.e. polyelectrolyte brushes. Charge repulsion makes polymer chains assume more stretched state and can be easily tuned by counterions interaction. In the way, the conformation can be changed. This provides feasible way to tune the surface friction property.
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上传时间: 2013-11-22 15:28:24
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