Thermal Behavior of New Polymaleamides

Abstract

Novel polymaleamides have been prepared from bisfurilic maleamide monomers and bismaleimides by the Diels-Alder reactions. The bisfurilic monomers were synthesized by the ring opening reaction of bisisomaleimides with 2-furfurylamine. The structure of monomers and polymers was confirmed by the FT-IR and ¹H-NMR spectroscopies and elemental analysis. The polymers based on the bismaleimide having a rigid structure gave brittle films and the polymers containing urethane groups resulted in elastic films. The thermal behavior of polymers was investigated by the thermogravimetric, dynamic mechanical and DSC measurements and dielectrical spectroscopy.

Keywords:

• Diels-Alder reaction
• Polymaleamides
• Thermal properties

Notes

^a Inherent viscosity measured at a concentration of 0.5 g dl⁻¹in DMF at 25°C.

^a Endothermal peak temperature corresponding to retro-DA process.

^b Exothermal peak temperature corresponding to the thermal polymerization of the bismaleimides obtained by the retro-DA polymaleamides.

^c Char yield at 575°C.

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