PVA (Mw 195000, 98-99% hydrolyzed, ~4300 polymerization)

PVA (Mw 195000, 98-99% hydrolyzed, ~4300 polymerization) is a polyvinyl alcohol with molecular weight of 195000 with hydrolysis properties. Hydrolysis degree refers to the conversion rate of acetic acid group hydrolysis to hydroxyl group in the original polyvinyl acetate, PVA (Mw 195000, 98-99% hydrolyzed, ~4300 polymerization) . In addition, polyvinyl alcohol is obtained from polymerization of vinyl acetate to remove acetic acid group by hydrolysis. Polyvinyl alcohol with different degrees of hydrolysis can be self-crosslinked to form frozen gels and used as biological excipients[1].