ABSTRACT:The heat of polymerization ⌬H p , of nitropropyl(meth)acrylate monomers has been studied by differential scanning calorimetry (DSC) in dynamic and isothermal modes. DSC showed that ⌬H p of 2-nitropropyl(meth)acrylate was surprisingly smaller than that of propyl(meth)acrylate but similar to that of 2,2-dinitropropyl(meth)acrylate. According to molecular structure analysis by a PM3 Hamiltonian in a MOPAC program, the contributing main factor to the lowering of ⌬H p of 2-nitropropyl (meth)acrylate was found to be the hydrogen bond between the O(AC) and the H atom attached at position C6.
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