Abstract
Isocyanate terminated uralkyd resin was synthesized in the laboratory. The uralkyd resin was reacted with styrene monomer using benzoyl peroxide as the initiator and interpenetrating polymer networks (IPNs) were synthesized. The elastomers obtained showed decreasing tensile strength and hardness, whereas an increasing elongation was observed, with increase in the uralkyd content in uralkyd/polystyrene IPNs. Thermogravimetric analyses were used to study the thermal behavior of IPNs and determination of activation energy. The syntheses of the IPNs (25/75 uralkyd/polystyrene ratio) incorporating triethanolamine as a chain extender and curing agent for uralkyd resin, showed an activation energy of 19.15 kcal mol−1 as compared to 10.19 kcal mol−1 for IPNs without triethanolamine, which is nearly twice as much. No noticeable change was observed in the glass transition temperatures (Tgs) of the IPNs with or without triethanolamine.
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Athawale, V., Raut, S. New Elastomers Based on Uralkyd/Polystyrene Interpenetrating Polymer Networks. Polym J 30, 963–967 (1998). https://doi.org/10.1295/polymj.30.963
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DOI: https://doi.org/10.1295/polymj.30.963