FLOW-INDUCED CRYSTALLIZATION OF POLY (VINYL ALCOHOL) FROM THE ETHYLENE GLYCOL-WATER SOLUTION

抄録

The crystallization of poly (vinyl alcohol) (PVA) from the aqueous solution containing ethylene glycol (EG) was carried out under a steady-state flow. The extent of crystallization was maximum at EG content, ca. 10 vol.% and was zero at 30 vol.% at 30°C. Moreover, the effects on the yield of the precipitate of the adsorption of PVA molecules to the solution surface and the dissolved state of PVA molecule in the solvent mixture were described.