Poly (ethylene-co-vinyl acetate) Blends with Phenoxy

摘要

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. Differental scanning calorimetry (DSC) showed that the glass transition temperature (T_g) of EVA was increased by 5-10 deg C in the EVA-rich blends but the T_g 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.