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The reaction kinetics between diazide(4,4’-biphenyl dibenzyl azide) and different diynes(dipropargyl bisphenol A and 1,3-diethynylbenzene) were studied by means of differential scanning calorimetry(DSC) and nuclear magnetic resonance spectroscopy(~1H-NMR).DSC was adopted to analyze the reactions under bulk polymerization condition,while ~1H-NMR for solution reaction polymerization was conducted.The apparent activation energies(E_α) calculated by Kissinger’s method were 77.96,81.24 k J/mol,which were confirmed by Friedman’s method,and 65.45,69.36 k J/mol by ~1H-NMR for dispropargyl bisphenol A/4,4’-biphenyl dibenzyl azide and 1,3-diethynylbenzene/4,4’-biphenyl dibenzyl azide,respectively.The polymerizations between the diazide and diynes were first-order reactions based on calculation from both DSC and ~1H-NMR.The results showed that the reaction between dipropargyl bisphenol A and 4,4’-biphenyl dibenzyl azide was easier than that between 1,3-diethynylbenzene and 4,4’-biphenyl dibenzyl azide,verifying that the reactivity of aliphatic alkyne was higher than that of aromatic alkyne.
The reaction kinetics between diazide (4,4’-biphenyl dibenzyl azide) and different diynes (dipropargyl bisphenol A and 1,3-diethynylbenzene) were studied by means of differential scanning calorimetry (DSC) and nuclear magnetic resonance spectroscopy DSC was solved to analyze the reactions under bulk polymerization conditions, while ~ 1H-NMR for solution reaction polymerization was conducted. The apparent activation energies (E_α) calculated by Kissinger’s method were 77.96, 81.24 kJ / mol, which were confirmed by Friedman’s method, and 65.45, 69.36 kJ / mol by ~ 1H-NMR for dispropargyl bisphenol A / 4,4’-biphenyl dibenzyl azide and 1,3-diethynylbenzene / 4,4’-biphenyl dibenzyl azide, respectively. the diazide and diynes were first-order reactions based on calculation from both DSC and ~ 1H-NMR. The results showed that the reaction between dipropargyl bisphenol A and 4,4’-biphenyl dibenzyl azide was easier than that between 1,3-diethynylbenzene and 4,4’-biphenyl dibenzyl azide, verifying that the reactivity of aliphatic alkyne was higher than that of aromatic alkyne.