Kinetic study of the thermal polymerization reactions between diazide and different diynes
The reaction kinetics between dipropargyl biphenol A and 4,4 -biphenyl dibenzyl azide,1,3-diethynylbenzene and 4,4 -biphenyl dibenzyl azide were studied in this paper by means of Differential scanning calorimetry(DSC) and 1H-NMR.DSC was carried out to characterize the reactions in bulk polymerization condition.The apparent activation energies(E ) calculated by Kissinger s method were 77.96kJ/mol,81.24 kJ/mol for dipropargyl biphenol A/4,4 -biphenyl dibenzyl azide and 1,3-diethynylbenzene/4,4 -biphenyl dibenzyl azide respectively,which were confirmed by differential isoconversional method and the reaction orders were near to one.1H-NMR was employed to analyze the solution reaction polymerization,the calculated E were 65.45kJ/mol,69.36kJ/mol for dipropargyl biphenol A/4,4 -biphenyl dibenzyl azide and 1,3-diethynylbenzene/4,4 -biphenyl dibenzyl azide respectively,the reaction orders were near to one as well.The results show that reaction between dipropargyl biphenol A and 4,4 -biphenyl dibenzyl azide was easier than that between 1,3-diethynylbenzene and 4,4 -biphenyl dibenzyl azide.It proved that the reactivity was related to the structure of monomers.
1,3-dipolar cycloaddition dipropargyl biphenol A 1,3-diethylnylbenzene kinetic study apparent activation energy
Rongpeng Liu Liqiang Wan Farong Huang Lei Du
Key Laboratory for Specially Functional Polymeric Materials and Related Technology of the Ministry of Education,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,P.R.China
国内会议
北京
英文
17-25
2013-09-10（万方平台首次上网日期，不代表论文的发表时间）