文献类型：期刊文献

英文题名：Thermal curing behavior of benzoxazine functional polysilsesquioxane nanospheres

作者：Zhou, Changlu[1];Tao, Miao[1];Liu, Juan[2];Xin, Zhong[3]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：678

外文期刊名：THERMOCHIMICA ACTA

收录：;EI(收录号：20192307017429);WOS:【SCI-EXPANDED(收录号:WOS:000481563100008)】；

基金：The authors gratefully appreciated the financial support provided by National Natural Science Foundation of China (21808062, 21776080), Innovation Program of Shanghai Municipal Education Commission, the Fundamental Research Funds for the Central Universities (50321011917025, 50321011918010), Program of Leading Talents (2013). The authors would like to acknowledge Prof. Tao Thou (Sichuan University) for his contribution in the 2D analysis software.

语种：英文

外文关键词：Benzoxazine; Polysilsesquioxane; Nanosphere; Thermal curing

摘要：Benzoxazine functional polysilsesquioxane (Bz-PSQ) nanoparticles were synthesized using a simple sol-gel method in this work, which is characterized by scanning electron microscopy (SEM) and show a uniform spherical morphology. The benzoxazine functional structure of nanospheres was studied by Fourier transform infrared spectroscopy (FTIR) and water contact angle measurement. The curing kinetics and curing behavior of benzoxazine structure in nanoshperes were investigated by differential scanning calorimeter (DSC) and In situ FTIR. The activation energy of the curing reaction is 148.0 +/- 14.1 kJ mol(-1) for Kissinger and 149.4 +/- 13.4 kJ mol(-1) for Ozawa method, respectively. Differential FTIR spectra and 2D correlation analysis were utilized to discern the sequence of molecular variations during the curing process and the possible polymerization mechanism of benzoxazine structure was proposed as well.