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POLYVINYL ALCOHOL - MELAMINE FORMALDEHYDE RESIN COMPOSITE AND NANOCOMPOSITES WITH Ag,TiO2, ZnO NANOPARTICLES AS ANTIMICROBIAL FILMS, COATINGS AND SPRAYS
2014
Melamine formaldehyde resin, MFR, is generally formed in a two stage process by the reaction of melamine and formaldehyde. The first stage reaction is carried out at about 70° - 80°C and pH 9-10; and the second stage involves subsequent polycondensation of the products in an acid medium. In this work, reaction is carried out till the first stage only. Thus, prepared MFR when blended in small proportion into PVA matrix in-solubilises PVA, forming a well defined PVA-MFR composite. The blend can
doi:10.17628/ecb.2014.3.1088-1097
fatcat:h44mnpu3ffewrcitgr6rxfs42a