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Dense polystyrene (PS) brushes were synthesized on silica wafers via a “grafting from” technique using activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP). Spectroscopic ellipsometry and fluorescence spectroscopy were used to investigate the effect of nanoscale confinement on the glass transition temperature (T g ) and its distribution in dense PS...
The effects of confinement on polymer films are important in applications related to photoresists. To optimize resolution, methacrylate polymers used in photoresists are often low molecular weight (MW). We use ellipsometry and fluorescence to study how the glass transition temperature (Tg) is affected by confinement in silica-supported films of low and high MW poly(1-ethylcyclopentyl methacrylate)...
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