期刊
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
卷 10, 期 3-4, 页码 176-183出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.cocis.2005.05.005
关键词
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Now more than ever, smart material interfaces in a variety of applications demand control over complex interfacial processes, often involving adsorbed polymers. To this end, this opinion article addresses the dynamic complexity in homopolymer layers adsorbed at liquid-solid interfaces, summarizing some of the simplest examples and examining the potential impact of specific complicating mechanisms: The distinction between diffusion limited (in free solution) and surface-controlled chain release is made, and then for the latter, several different cases of single-exponential desorption, self-exchange, and displacement are compared: Though the systems present great chemical variety, they have either a limited number of or a weak energy of segment- surface contacts. Increasing the strength and/or numbers of these contacts complicates dynamics, as does increasing molecular weight which can introduce chain pinning. (C) 2005 Elsevier Ltd. All rights reserved.
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