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首页> 外文期刊>Journal of Applied Polymer Science >Thermogravimetric analysis of methyl methacrylate-graft-natural rubber
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Thermogravimetric analysis of methyl methacrylate-graft-natural rubber

机译：甲基丙烯酸甲酯-接枝天然橡胶的热重分析

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摘要

The thermal degradations of methyl methacrylate-graft-natural rubber (MG) at different heating rates (B) in nitrogen were studied by thermogravimetric analysis. The results indicate that the thermal degradation of MG in nitrogen is a one-step reaction. The degradation temperatures increase along with the increment of heating rates. The temperature of initial degradation (T-0) is 0.448B + 362.4degreesC, the temperature at maximum degradation rate, that is, the peak temperature on a differential thermogravimetric curve (T-p) is 0.545B + 380.7degreesC, and the temperature of final degradation (T-f) is 0.476B + 409.4degreesC. The degradation rate at T. is not affected by B, and its average value is 48.9%; the degradation rate at Tf is not affected by B either, and its average value is 99.3%. The reaction order (n) is 2.1 and is not affected by B. The reaction activation energy (E) and the frequency factor (A) increase along with B, and the apparent reaction activation energy (E-0) is 254.6 kJ/mol. (C) 2002 Wilev Periodicals, Inc. [References: 10]
机译：通过热重分析研究了甲基丙烯酸接枝天然橡胶（MG）在氮气中不同升温速率（B）下的热降解。结果表明，MG在氮中的热降解是一步反应。降解温度随​​着加热速率的增加而增加。初始降解温度（T-0）为0.448B + 362.4°C，最大降解速率下的温度，即微分热重曲线（Tp）上的峰值温度为0.545B + 380.7°C，最终温度为降解（Tf）为0.476B + 409.4℃。 T处的降解率不受B的影响，其平均值为48.9％; Tf处的降解率也不受B的影响，其平均值为99.3％。反应级数（n）为2.1，不受B的影响。反应活化能（E）和频率因子（A）随B增加，表观反应活化能（E-0）为254.6 kJ / mol 。 （C）2002 Wilev Periodicals，Inc. [参考：10]

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