Rheology and phase behaviour of blends of poly(ethylene oxide) with poly(vinyl acetate) and with poly(vinyl acetate-ran-ethylene)
β Scribed by Chang Dae Han; Hak Soo Chung; Jin Kon Kim
- Book ID
- 107846652
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 733 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0032-3861
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## Abstract The compatibility of poly(ethylene oxide)βpoly(vinyl acetate) (PEOβPVA) blends was examined at five compositions covering the complete range. Samples were prepared by coprecipitation and solution casting. Dynamic mechanical properties were studied at 110 Hz between β120 and 65Β°C for dry
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 (D
Thermal and morphology studies were carried out to characterize the mutual miscibility of poly(ethylene oxide)/poly(vinyl acetate) (PEO/PVAC) blends. The techniques used were DSC and polarized microscopy and the study covered the complete composition range. Morphology revealed qualitative difference