Nanoparticle-textured surfaces from spin coating.
Rough surfaces composed of discrete but relatively uniform nanoparticles were prepared from a lightly sulfonated polystyrene ionomer by spin coating from tetrahydrofuran (THF) or a THF/methanol mixture onto a silica surface. The particle morphology is consistent with the spinodal decomposition of the film surface occurring during spin coating. The particles are well wetted to the silica, and if heated for a long time above the ionomer's glass-transition temperature, the particles flow and coalesce into a smooth, homogeneous film.
Weiss
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Department of Chemical Engineering, Polymer Program, University of Connecticut, Storrs, Connecticut 06269, USA. rweiss@ims.uconn.edu
Zhai
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Dobrynin
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D002412:Cations; D005663:Furans / Q000737:chemistry; D000432:Methanol / Q000737:chemistry; D018625:Microscopy, Atomic Force; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D011108:Polymers; D011137:Polystyrenes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D044366:Transition Temperature; D017155:Wettability
D002412:Cations; D005663:Furans; D011108:Polymers; D011137:Polystyrenes; C018674:tetrahydrofuran; D012822:Silicon Dioxide; D000432:Methanol