POS3-1230
Investigating Structure and Properties of PC/PMMA Blends through Transesterification during Reactive Melt Blending
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Sihyeong Lee (Korea Research Institute of Chemical Technology (KRICT), Yonsei University)
Co-Author(s)
Abstract
Reactive melt blending provides an effective approach to tailoring the structure and properties of immiscible polymer blends through processing-induced chemical reactions. In this study, the processing-dependent structure–property relationships of polycarbonate (PC)/poly(methyl methacrylate) (PMMA) blends prepared using magnesium(II) bis(trifluoromethanesulfonyl)imide (Mg(TFSI)2) as a transesterification catalyst were investigated. Processing parameters, including blending time, feeding sequence, and temperature, were systematically varied to investigate their effects on degradation, transesterification, graft formation, and phase morphology during reactive melt blending. The structural evolution was elucidated through 13C NMR, WAXS, rheometer and microscopy, and correlated with the resulting optical and mechanical properties. The processing-dependent graft structures significantly enhanced blend miscibility, leading to refined phase morphology and corresponding changes in the optical and mechanical properties. These findings demonstrate that the degradation–grafting balance can be effectively controlled through processing conditions, providing a practical strategy for tailoring the structure and performance of reactive PC/PMMA blends.
