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

EVA was blended with phenoxy over the whole range of composition using a tw in-screw Brabender. Two-phase separation caused by EVA crystallization was observed in the EVA-rich blends and the dispersed domain of EVA was not cle arly shown in the phenoxy-rich blends. Differential scanning calorimetry (D SC) showed that the glass transition temperature (T-g) of EVA was increased by 5-10 degrees C in the EVA-rich blends but the T-g of phenoxy was superp osed over the melting behavior of EVA. X-ray diffraction measurement indica ted that EVA crystallization was restricted in the phenoxy-rich blends and the EVA crystal structure was influenced by incorporation of phenoxy into t he EVA-rich blends. (C) 1999 John Wiley & Sons, Inc.