SYNTHESIS AND CHARACTERIZATION OF INTERPENETRATING POLYMER NETWORKS BASED ON POLYOL MODIFIED NATURAL oil POLYURETHANE AND CARDANOL BASED DYES

Abstract

Because of mounting pressure on reduction of consumption of petroleum and newlinepetrochemical products, the use of natural renewable resources to substitute petroleum newlinederivatives has gained tremendous momentum in the last few years. Much attention is newlinenow being paid to the synthesis of polymers from natural renewable resources as newlinealternatives to conventional petrochemicals all over the world. Further, awareness of the newlinewaste management and the impact of the waste on the eco-system have engineered new newlineinterests in the field of biopolymers derived from agricultural by-products. In the present newlinestudy, the Cashew Nut Shell Liquid (CNSL) a by-product of cashew industries has been newlineutilized as a potential source of low cost biomonomer (cardanol) having an unsaturated newlinealiphatic side chain and a phenolic group in the benzene ring. Castor oil, a commercially newlineimportant low cost natural polyol, has been modified and used as polyol modified casto newline