Abstract
Poly(2-hydroxyethyl methacrylate-maleic acid) [P(HEMA/MA)] networks were prepared by radiation-induced polymerization of 2-hydroxyethyl methacrylate and maleic acid in aqueous solution. The thermal properties of the P(HEMA/MA) networks were investigated with differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The thermal behavior of these networks was also compared with PHEMA homopolymer. The glass transition temperature ( T g) of PHEMA homopolymer was found as 87 °C. On the other hand, T g of the P(HEMA/MA) networks decreased from 118 °C to 113 °C with increasing amount of MA in the network. It was observed that the initial thermal degradation temperature of P(HEMA/MA) networks did not change much with the MA content. However, the thermal degradation reaction mechanism of these copolymeric networks was different from PHEMA homopolymer.
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