Sequence Distribution of Acetate and Hydroxyl Groups in Partially Hydrolyzed Polyvinyl alcohol

In this work, poly(vinyl acetate) was synthesized by solution polymerization and partially hydrolyzed to polyvinyl alcohol (PVA) by alkaline alcoholysis and direct (water) hydrolysis. The effect of hydrolysis environment on the sequence of functional groups on PVA is then investigated. Carbon nuclear magnetic resonance (C NMR) spectroscopy was used to determine the acetate and hydroxyl group distribution. The results showed that the distribution depends on the hydrolysis environment and water media leads to more block distribution than using methanol environment

کلیدواژه ها:

polyvinyl alcohol ، sequence distribution ، nuclear magnetic resonance ، block copolymer