Synthesis and Characterization of Functional Polymers and Polymer Composites Using Click Chemistry

Abstract

Polymer nanocomposites (PNC) have been extensively studied because of their widespread applications in the automobile, household and electrical industries. The methods studied for PNC synthesis suffers from certain drawbacks like low yielding formations at high temperatures, less control on reaction conditions, less possible choice of dipoles/dipolarophiles and alters the hybridization. newlineIn contrast to previously reported methods, click chemistry offers high yielding formations at low temperatures, more control on reaction conditions, possible choice of dipoles/dipolarophiles with desired side groups and the characterization of reaction intermediates. The present work discusses the role of interface, preparation, structure-property relationship and application of polymer nanocomposite using click chemistry and GMA bridging techniques. The strategy for the preparation of novel polymethyl methacrylate/ nanographite platelets nanocomposite (P-NC) film by the macromolecular click cycloaddition route has been used. The nanocomposites exhibit remarkable sensing properties towards ammonia gas. In another part of the work, a strong interfacial interaction is attempted through a versatile polymer Glycidyl methacrylate which binds NGP through grafting on one end and is covalently bonded to PMMA matrix at the other end providing a novel strategy to develop ternary nanocomposites. We have also reported the synthesis of thiolated PS/NGPs with a short alkyl linkage between the NGPs and the thiol end. The interfacial interaction directly correlates with its effectiveness for improving mechanical, electrical, thermal properties of the nanocomposites. Thus, process identification is very essential that includes the selection of initial target molecules, starting materials, and the reactions used to synthesize them, ultimately leading to the generation of compound with desired properties attributing suitable application. newline newline newline