Rheological Investigation of Entangled Hybrid Copolymers of Polystyrene (PS) With Polyhedral Oligosilsesquioxane (POSS)

摘要

The thermal properties and rheological behaviors of polystyrene (PS)- based thermoplastics bearing polyhedral oligosilsesquioxane (POSS) were investigated with variation of isobutyl (iBu)-POSS weight percentage. The incorporation of POSS-group significantly decreases the glass transition temperature and the rubbery plateau modulus. These findings are attributed to an influence of the nanometer-scale POSS pendant group on the microscopic topology of the host polymeric chains and negligible interactions between POSS and PS matrix.