Retro polymerization of polyvinyl chloride PVC by green solvents

Abstract

Recycling of polymer to monomer by means of microscopic reversibility is one of the fascinating areas of research for the management of plastic waste. Polyvinyl chloride recycling based on material recycling or retro-polymerization can solve many issues related to energy recovery and prevents the depletion of petroleum resources. Chlorine present in PVC provides the thermal stability towards polyene sequence, improves mechanical properties such as modulus and ultimate tensile strength and increase its ductility. Chlorine in the other way provides complexity in its recycling due to the formation of conjugated double bonds during its thermal degradation. By controlling chlorine microscopically is the most ideal way for its retro-polymerization assisted management of PVC. Retro polymerization of PVC can be more environmental friendly by using green solvents and the incorporation of compatible microbes. Furthermore, the thesis targets towards the study of, i PVC waste projection using life expectancy of products; ii proposes the use of glycol and glycerol carbonate and urethane as green solvents for PVC retro polymerization and iii finally to develop hybrid chemical assisted biological technique for retro polymerization. newlineTwo important hybrid combinations were found for PVC degradation and dechlorination: i glycerol and urea C PVC Mucor rouxii sp. was found to be susceptible towards C PVC bio degradation, ii Pseudomonas sp. and Aspergillus sp. were investigated as novel combination of PVC dechlorination in the presence of ethylene carbonate. newline newline