Synthesis and characterization of Phthalonitrile polymers and their Nanocomposites with CNT

Abstract

Phthalonitrile based polymers constitute a class of high temperature newlineresins having a wide range of potential applications such as composite newlinematrices, adhesives and coatings A major advantage of phthalonitrile resins newlinecompared with other plastics is their ability to withstand temperature in newlineexcess of 200 coatings plastics or composites made therefrom Polymerization takes place newlinethrough the terminal cyano group by an addition mechanism to afford crosslinked newlinenetworks The monomer curing additive compositions are easy to newlineprocess into void free components that exhibit excellent thermal and newlineoxidative stability Some of the alternative efficient green techniques such as ionic newlineliquids ILs microwave MW and supercritical media have been used Ionic newlineliquids have many interesting properties such as nonvolatility good newlineconductivity good thermal stability nonflammability and can dissolve most newlineorganic and inorganic materials Microwave irradiation provides an effective newlineand fast synthetic method by heating molecules directly through the newlineinteraction between the microwave energy and molecular dipole moments of newlinethe starting materials Above its critical point Tc 31 1 C Pc 73 8 bar newlinecarbon dioxide can have a number of attractive properties such as newlineenvironmental benignity energy efficiency and dissolves most of the organic newlinecompounds newline newline