Interpenetrating Polymer Networks, from glycerol modified linseed oil polyurethanes and cardanol-based dyes, which are yet to be extensively studied were synthesized using benzoyl peroxide as initiator and ethylene glycol dimethacrylate as cross-linker. These polymers were characterized by Fourier transform infrared spectra, thermal analysis techniques such as thermogravimetric analysis, derivative thermogravimetry and differential thermal analysis. The kinetic parameters such as activation energy and orders of reaction were ascertained using Freeman-Carroll and Freeman-Anderson methods. The effects of changes in polyurethane to dye monomer weight ratio on the properties of such polymers were investigated at 1.2 and 1.6 NCO/OH ratios.
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Achary et al. (2010) studied this question.
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