Synthesis, characterization, and kinetics study of thermal decomposition of epoxidized soybean oil acrylate
Synthesis, characterization, and kinetics study of thermal decomposition of epoxidized soybean oil acrylate
复制标题
DOI：
10.1002/app.28350
复制
发表时间：
2008-08-15
影响因子：
3
通讯作者：
Banthia, A. K.
中科院分区：
文献类型：
--
作者：
Behera, D.;Banthia, A. K.
以环氧大豆油（ESO）为原料，以环氧大豆油（ESO）为原料，通过丙烯酸与环氧大豆油中的氧环烷基反应，合成了环氧大豆油丙烯酸酯（ESOA）。用各种分析技术对丙烯酸酯化产物进行了表征。通过测定氧值、碘值和酸值来了解合成产物中不饱和度的多少。通过红外光谱和质子核磁共振谱证实了氧烷基团参与了丙烯化反应。采用自由基引发剂过氧化苯甲酰和过氧苯甲酸叔丁酯固化ESOA树脂。采用Ozawa、Kissinger和Horowitz-Metzger方法研究了ESOA的热分解动力学，并对动力学参数进行了比较。采用热重分析（TGA）对固化后的ESOA树脂在不同升温速率下的热分解数据进行了分析。热重曲线表明，ESOA体系发生了一个阶段的热分解。Ozawa法、Kissinger法和Horowitz-Metzger法测定的表观活化能分别为122.69、95.347和126.20 kJ/mol。结果表明，上述几种方法计算的第一阶段活化能具有较好的一致性。(C) 2008 Wiley期刊有限公司
The synthesis of epoxidized soybean oil acrylate (ESOA) from epoxidized soybean oil (ESO) had been carried out by reacting acrylic acid with the oxirane group in ESO. The acrylated ESO products were characterized using a variety of analytical techniques. The oxygen value, iodine value, and acid value were obtained to know the amount of unsaturation in the synthesized product. Infrared and proton NMR spectra were carried out to confirm the participation of oxirane group in the acrylation reaction. Free-radical initiators, benzoyl peroxide and tertiary butyl peroxy benzoate, were used for the curing of ESOA resin. Thermal decomposition kinetics of ESOA was studied by the methods of Ozawa, Kissinger, and Horowitz-Metzger, and the kinetic parameters were compared. The thermal decomposition data of the cured ESOA resin was analyzed by thermogravimetric analysis (TGA) at different heating rates. TG curves showed that the thermal decomposition of the ESOA system occurred in one stage. The apparent activation energies determined by the Ozawa, Kissinger, and Horowitz-Metzger methods are 122.69, 95.347, and 126.20 kJ/mol, respectively. The results show that there was a reasonably good agreement between the calculated activation energies for stage one in the above methods. (C) 2008 Wiley Periodicals, Inc.