Segmental Dynamics in Poly(methyl Acrylate) on Silica: Effect of Surface Treatment
作者： Burak Metin , Frank D. Blum
DOI: 10.1021/LA903705P
关键词: Methyl acrylate 、 Differential scanning calorimetry 、 Poly(methyl acrylate) 、 Methyl group 、 Analytical chemistry 、 Deuterium NMR 、 Nuclear chemistry 、 Glass transition 、 Chemistry 、 Adsorption 、 Polymer
摘要: The effect of surface treatment on the dynamics adsorbed poly(methyl acrylate) (PMA) was studied using deuterium NMR and temperature-modulated differential scanning calorimetry (TMDSC). solid-state experiments were performed PMA-d3, deuterated methyl group. line shape changes for PMA-d3 followed as a function temperature compared polymer untreated silica, organically modified (treated) silica (reacted with hexamethyltrisilazane), in bulk. treated found to be intermediate between that bulk polymer, i.e., caused restriction bulk, but not dramatically silica. Similar showed broad heterogeneity superposition more-mobile less-mobile components. Two molecular mass samples als...
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