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In this work, smooth polymer films of PS, PLA and their blends, with thicknesses ranging from 20nm up to 400nm and very few defects on the surface were obtained by dip-coating. In contrast to the process of spin-coating which is conventionally used to prepare thin films of polymer blends, we showed that depending on the deposition parameters (withdrawal speed and geometry of the reservoir), various...
The main aim of this research is to study the effects of polymer molecular weight as well as non-solvent concentration on the phase separation, surface morphology and wettability of polyvinyl chloride (PVC) films. Gel permeation chromatography (GPC) results showed that the Mn of the used PVC grades is 6×104, 8.7×104 and 1.26×105g/mol. It was found that a proper combination of polymer molecular weight...
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