Compositions comprising a polyvinyl alcohol in combination with a biocide which is a plasticizer, such as a quaternary ammonium compound, or in combination with a biocide and a compatible plasticizer, and wherein the biocide forms a complex with the polyvinyl alcohol, said combination having been heated to above its melting point, said composition having a surface which remains biostatic or biocidal for at least 7 days. A hot melt of the composition may be cast or applied as a film or coating or may be extruded molded or otherwise into articles. Volatiles formed during heating may be removed from the combination e.g. by low pressure.
