HIGH-IMPACT POLY(ETHYLENE-TEREPHTHALATE) BLENDS

Rubbers of different kind were tested as toughening agents of poly(eth ylene terephthalate) (PET), noting significant morphological and mecha nical differences. In particular, good results were obtained by using an ethylene-ethyl acrylate-glycidyl methacrylate copolymer. The result ing blend evidenced good particle distribution, and the latter was rel ated to chemical interactions between the rubber epoxy groups and PET terminal groups, including the effect of low molecular weight and poly meric amine catalysts, and to extrusion conditions. (C) 1995 John Wile y & Sons, Inc.