Studies on Synthesis Characterization and Applications of Microencapsulation Process via Interfacial Polymerization

Abstract

newline Interfacial Polymerization (IP) has been widely acknowledged as an efficient chemical process for synthesis of polymeric microcapsules loaded with an Active Ingredients such as food additives,pharmaceuticals,agrochemicals,solvents,adhesives,immobilization of living cells etc. IP,through several step-growth reactions,opens a wide window for synthesis of polymeric microcapsules at ambient conditions without stringent conditions of monomer purity. Polyurea synthesized by IP is effectively used as a shell material for encapsulation of various agrochemicals like pesticides, herbicides, insect growth regulators and anti germinating agents. newline The main objectives of the present experimental investigation are to study effect of different reaction parameters, various organic solvents and reaction temperature on reaction kinetics for synthesis of polyurea microcapsules via IP; which governs other process variables resulting into change in crystallinity of polyurea shell. Three different insecticides were successfully encapsulated in polyurea shell as an active ingredient and its encapsulation efficiency and controlled release data were correlated with crystallinity.