Poly(ethylene-co-vinyl acetate) blends with phenoxy

EVA was blended with phenoxy over the whole range of composition using a twin-screw Brabender. Two-phase separation caused by EVA crystallization was observed in the EVA-rich blends and the dispersed domain of EVA was not clearly shown in the phenoxy-rich blends. Differential scanning calorimetry (DSC) showed that the glass transition temperature (Tg) of EVA was increased by 5–10°C in the EVA-rich blends but the Tg of phenoxy was superposed over the melting behavior of EVA. X-ray diffraction measurement indicated that EVA crystallization was restricted in the phenoxy-rich blends and the EVA crystal structure was influenced by incorporation of phenoxy into the EVA-rich blends. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 227–236, 1999