PVA (Mw 27000, 98-99% hydrolyzed, ~600 polymerization)

PVA (Mw 27000, 98-99% hydrolyzed, ~600 polymerization) is a polyvinyl alcohol with molecular weight of 27000 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 27000, 98-99% hydrolyzed, ~600 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].