Thin films of ultramonodisperse polystyrene polymers

We present a study of the aging of thin films composed of ultramonodisperse polymeric/oligomeric samples. Purified polymeric samples of known molecular weight and polydispersity are deposited via thermal evaporation onto actively cooled silicon substrates, forming uniform films. Ellipsometry allows us to investigate the thickness and refractive index of these vapour deposited films. We compare calorimetric glass transitions of these films with different production parameters.