Abstract
A series of semi-IPN based on poly(antimony acrylate) and poly(bismuth acrylate), using benzoyl peroxide in DMF and divinylbenzene as crosslinking agents, has been synthesized. The values of coefficient of interaction (K AB) between the two polymers in solvents such as DMSO, DMF, and dioxane reflect contraction of the polymer coils in the order DMSO > DMF > dioxane. The scanning electron microscopy (SEM) reveals a dual-phase morphology of both metal acrylates. Properties like percentage swelling, average molecular weight between crosslinks (M c), and Young's modulus increase with concentration of poly(antimony acrylate) and poly(benzoyl peroxide). However, they decrease with concentration of bismuth acrylate and divinyl benzene. The differential scanning calorimeter (DSC) curve shows two glass transition temperatures for IPN at 60 and 72°C. The value of activation energy, calculated from thermogravimetric analysis, is 20 KJ/mol.
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