Details

Autor(en) / Beteiligte

• Liu, Rongpeng
• Wan, Liqiang
• Huang, Farong
• Du, Lei

Titel

Kinetic Study of Thermal Polymerization Reactions between Diazide and Different Diynes

Ist Teil von

• Journal of Wuhan University of Technology. Materials science edition, 2016-02, Vol.31 (1), p.157-163

Ort / Verlag

Wuhan: Wuhan University of Technology

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.