Influence of curing agent concentration and curing temperatures on the thermostability of styrene–acrylonitrile–acrylamide–trimethylolpropane trimethacrylate copolymer systems

Abstract

SynopsisThermogravimetric (TGA) and infrared (IR) analyses were used to determine the thermal stability of a polymer system consisting of styrene-acrylonitrile-acrylamide-trimethylolpropane trimethacrylate. This study indicates that increases in curing temperature and the use of two initiators with different activities decreases the percentages of unreacted monomers. This increases the thermal stability of the polymer. To prove this, dynamic and isothermal TGA were used. The change in typical functional groups found by IR spectra also confirms this observation.

Thermal analysis

“…This phenomenon was associated with strong exothermic DTA peaks. TG and IR analyses applied to a styrene-acrylonitrile-acrylamide-trimethylolpropane trimethacrylate polymer system showed that increasing the curing temperature and using two initiators decreased the free monomer and increased thermal stability (204).…”