Bilecik Şeyh Edebali University, Faculty of Engineering, Department of Chemical Engineering, Bilecik, Turkey.
Bioresour Technol. 2020 Mar;300:122700. doi: 10.1016/j.biortech.2019.122700. Epub 2019 Dec 27.
The objective of this study was to evaluate pyrolysis and co-pyrolysis behavior of cellulose and poly(methyl methacrylate) (PMMA) and examine the kinetics of the processes by using thermogravimetric analysis (TGA) coupled with FT-IR spectrometry. For this purpose, non-isothermal experiments were carried out using different heating rates and three prominent iso-conversional methods were used to obtain kinetic parameters at various extents of conversions from 0.1 to 0.9. Blending PMMA with cellulose had a marked effect on the process. The results of co-pyrolysis using a blending ratio of 50 wt% PMMA indicated that the highest rate of pyrolytic transformation was achieved at a conversion degree of 0.5 while activation energy ranged from 188.1 to 364.3 kJ/mol. The most intensive gas release during cellulose pyrolysis was CO. Co-pyrolysis was more complicated than that of pyrolysis of cellulose and PMMA due to depolymerization and radical interactions.
本研究的目的是评估纤维素和聚甲基丙烯酸甲酯（PMMA）的热解和共热解行为，并通过热重分析（TGA）与傅里叶变换红外光谱联用（FT-IR）来研究这些过程的动力学。为此，使用不同的加热速率进行了非等温热重实验，并采用三种常用的等转化率方法，在转化率从 0.1 到 0.9 的不同范围内获得了动力学参数。将 PMMA 与纤维素共混对过程有显著影响。使用 50wt% PMMA 共混比进行共热解的结果表明，在转化率为 0.5 时达到了最高的热解转化速率，而活化能范围为 188.1 至 364.3kJ/mol。纤维素热解过程中释放的最强烈气体是 CO。由于解聚和自由基相互作用，共热解比纤维素和 PMMA 的热解更复杂。
