مقاله انگلیسی رایگان در مورد اثر سازگارکننده ها بر پلی کربنات – IOP Science 2014

Abstract

Blending the existing polymers have an added advantage over the conventional polymers. However, compatibility of the materials is a problem. In this study, metacrylate butadiene styrene (MBS) and polypropylene-graft-maleic anhydride (PP-g-MA) were added as a single compatibilizer on polycarbonate/poly(acrylonitrile-butadiene-styrene) blends (PC/ABS). The effects of the compatibilizer addition on the mechanical and morphological properties were investigated. The PC/ABS blends were prepared in various compositions of 70/30, 60/40, 50/50 with fixed 2 phr MBS or PP-g-MA. PC/ABS blends were prepared by using twin-screw extruder, and test samples by injection molding. Results indicated that MBS exhibited higher tensile strength, hardness, and density, but lower impact strength and elongation compared with PP-g-MA. The tensile strength, elongation, and hardness tended to increase with increasing PC content; however, the impact strength was almost the same. Scanning electron microscopic examination showed that PC/ABS blend compatibilized with PP-g-MA was more porous than the one with MBS. Based on the results, it was found that PP-g-MA was a more effective compatibilizer for the PC/ABS 70/30 blend than MBS. The values of tensile strength, hardness, elongation, density, and impact strength were 602 kg/cm2, 79.1 Shore A, 15.3 %, 1.05 g/cm3, and 5.5 kgf/cm respectively.

Introduction

Polycarbonate (PC)/ poly (acrylonitrile-butadiene-styrene) (ABS) blend is one of the most wildly-used engineering plastics in industry. In recent years large amounts of this blend is used in the automotive industry, domestic appliances, electrical and electronic equipment [1] . Although PC /ABS blend is known for special applications, it usually needs compatibilizer to enhance the adhesion strength between PC and ABS resin. This is because the wettability and surface energy are poor and low between PC and ABS resin [2] .