Scanning force microscopy of polymers at interfaces in controlled vapour environment: real-time visualisation of stimulated morphology changes

Автор: Marat Gallyamov
Сборник: Abstracts of conference "Trends in Nanoscience: Structure and Functions" (October 08 - 12, 2005, Kloster Irsee, Germany)
Тезисы
Год издания: 2005
Место издания: Kloster Irsee, Germany
Первая страница: P-16
Аннотация: Morphology conversions of adsorbed polymer nanostructures can be stimulated by an exposure to different vapours. The controlled rate of such transformations is sufficiently slow to allow the real-time following by in situ scanning force microscopy (SFM). We present real-time SFM-observations of vapour-induced structural transformations of single macromolecules and ultrathin block-copolymer films on a mica substrate. Coadsorption of small molecules from vapour phase modifies the interaction of the adsorbed polymer chains with the substrate and stimulates their reorganisation. Thus, the adsorbed polymer is forced to minimise the occupied surface area by the coadsorbed ethanol molecules (they are amphiphilic and more effective in the interface energy reduction). To the contrary, the coadsorbed water film stimulates spreading of the amphiphilic polymer chains and their extension .
Добавил в систему: Галлямов Марат Олегович

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