WANG Ying-kang, YANG Yang, BAN Eui-cheng. A STUDY ON POLY(ETHYLENE OXIDE) (PEG)/POLY (VINYL ACETATE) (PVA) BLENDS[J]. Acta Polymerica Sinica, 1986,(3):174-180.
WANG Ying-kang, YANG Yang, BAN Eui-cheng. A STUDY ON POLY(ETHYLENE OXIDE) (PEG)/POLY (VINYL ACETATE) (PVA) BLENDS[J]. Acta Polymerica Sinica, 1986,(3):174-180.DOI:
Melt blends of poly (ethylene oxide) (PEO) and poly-(vinyl acetate) (PVA) were prepared and studied by Torsienal Pendulum Analysis (TPA) and Fourier Transform Infrared (FTIR).Two glass traditions are found in these blends.The lower Tg cor-responds to the pure PEO. The segmental motion in the pure PEO The dependence of the position and broadness of the higher Tg on composition of the.blends indicates that the two compo-nents are vompatible in the amorphous phase with micro-heterogeneity.These Tg values observed from mixed PVA/PEO phase are ranch higher than that caleutated from Fox equation.The comparision of the blends quenched and annealed from melt implies that PVA mixed with PEO at the segmental level on molten state and the deviation of Tg values from Fox equation could be due to changing the blend's composition by erystal-lization of partial PEO component.Further indication that the hiends are compatible down to the ecBle of chain segments and there ale specific interactions between PVA and PEO molecules from came the analysis of FTIR speetra of the blends and the so-lution of PVA and organic solvent Diethylene Glycol Dimethyl Ether.