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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis, Characterization, and Thermal Degradation Kinetics of the Copolymer Poly(4-methoxybenzyl methacrylate-co-isobornyl methacrylate)
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Synthesis, Characterization, and Thermal Degradation Kinetics of the Copolymer Poly(4-methoxybenzyl methacrylate-co-isobornyl methacrylate)

机译：共聚物聚（甲基丙烯酸4-甲氧基苄酯-甲基丙烯酸异冰片酯）的合成，表征及热降解动力学

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摘要

A copolymer of 4-methoxybenzyl methacrylate and isobornyl methacrylate was synthesized by atom transfer radical polymerization. The structure of poly(4-methoxybenzyl methacrylate-co-isobornyl methacrylate)was confirmed by means of Fourier transform infrared, 1H-NMR, and 13C-NMR techniques. The molecular weight distribution values of the copolymer were determined with gel permeation chromatography. The numberaverage molecular weight and polydispersity index values of poly(4-methoxybenzyl methacrylate-co-isobornyl methacrylate) were found to be 12,500 and 1.5, respectively. The kinetics of the thermal degradation of the copolymer was investigated with thermogravimetric analysis at different heating rates. The activation energy values obtained with the Kissinger, Flynn–Wall–Ozawa, and Tang methods were determined to be 166.38, 167.54, and 167.47 kJ/mol, respectively. Different integral and differential methods were used, and the results were compared with these values. Doyle approximation was also used for comparing the experimental results to master plots. An analysis of the experimental results suggested that the reaction mechanism was an R1 deceleration type in the conversion range studied.
机译：通过原子转移自由基聚合反应合成了甲基丙烯酸4-甲氧基苄酯和甲基丙烯酸异冰片酯的共聚物。借助于傅立叶变换红外光谱，1 H-NMR和13 C-NMR技术证实了聚（甲基丙烯酸4-甲氧基苄酯-甲基丙烯酸异冰片酯）的结构。用凝胶渗透色谱法测定共聚物的分子量分布值。聚（甲基丙烯酸4-甲氧基苄酯-甲基丙烯酸异冰片酯共聚）的数均分子量和多分散指数值分别为12,500和1.5。通过热重分析在不同的加热速率下研究了共聚物的热降解动力学。用Kissinger，Flynn-Wall-Ozawa和Tang方法获得的活化能值分别确定为166.38、167.54和167.47 kJ / mol。使用了不同的积分和微分方法，并将结果与​​这些值进行了比较。 Doyle近似还用于将实验结果与主图进行比较。对实验结果的分析表明，在所研究的转化率范围内，反应机理为R1减速类型。

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