抄録
Acetalization of polyvinyl alcohol powder and fiber with azelaic acid aldehyde OHC(CH2)7 COOH was undertaken.
Polyvinyl alcohol can be easily acetalized both in homogeneous (aqueous solution) and heterogeneous (fibrous) reactions, and the degree of acetalization may be determined by the titration of carboxyl groups.
But it was difficult to obtain fibers which were sufficiently resistant in boiling water.
Viscosity measurement of aqueous solution showed that this acetal is a typical polymeric electrolyte.
