Preparation of the anhydride terminated polycarbonate and its reactive compatibilization with polystyrene

Abstract

Polycarbonate with anhydride end groups (PC‐anh) was prepared by the reaction between polycarbonate having hydroxyl end groups (PC‐OH) and trimellitic anhydride chloride (TMAC). Hydroxyl or anhydride terminated polycarbonates were characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The reaction of PC‐anh with polystyrene containing oxazoline reactive groups (RPS) was confirmed not only by the torque measurement during melt blending of these two but also by FTIR spectroscopy of the reactive blend obtained. Polycarbonate (PC) / polystyrene (PS) compatibilized blends were prepared by melt blending along with their reactive counterparts, PC‐anh and RPS in the Haake mixer. The morphologies of these blends were examined by the scanning electron microscope (SEM). The compatibilized blends with reactive components showed relatively finer morphologies than the uncompatibilized blend without reactive components. Izod impact strength and rheological property of these blends were also investigated. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 1338–1347, 2000

In the melt, grafting of polycarbonate onto polystyrene-block -poly(ethylene-butylene)-block -polystyrene-grafted -maleic anhydride: Reactive extrusion

“…The SEBS‐ g ‐PC is a novel copolymer, and it can be used either as a new multiphase material or as a compatibilizer. PS‐ g ‐PC has already been prepared to compatibilize PS and PC blends . However, the SEBS‐ g ‐PC exhibits a great advantage: it contains PS and PC phases, making it a candidate to compatibilize PS/PC blends, but also it presents a compatible elastomeric phase, ethylene/butylene, which can improve impact and tensile properties of such blends.…”