Manić Nebojša, Janković Bojan, Stojiljković Dragoslava, Angelopoulos Panagiotis, Radojević Miloš
Faculty of Mechanical Engineering, Fuel and Combustion Laboratory, University of Belgrade, Belgrade, Serbia.
Department of Physical Chemistry, Vinča Institute of Nuclear Sciences - National Institute of The Republic of Serbia, University of Belgrade, Belgrade, Serbia.
J Therm Anal Calorim. 2022;147(18):10131-10143. doi: 10.1007/s10973-022-11358-9. Epub 2022 May 3.
The presented paper deals with the influence of the heating rate on combustion characteristics (reactivity and reactivity evaluation, ignition index ( ), burnout index ( ), the combustion performance index (), and the combustion stability index ( )) of the protective coronavirus face masks. Two types of commonly used face masks in different state (new and exploited) were investigated by TG-DTG analysis in an air atmosphere, directly coupled with mass spectrometry (MS). Based on the experimental results, the impact of ultimate and proximate analysis data on the evolved gas analysis (EGA) was discussed. Also, the derived values from thermo-analytical (TA) data were compared with the literature reports, related to individual constitutive face mask materials. According to the performed research, it was established that different maximal reaction rate values at various heating rates indicate the complex nature of coronavirus face mask thermo-oxidative degradation, which is stimulated with carbon oxidation reactions and volatile matter (VM) release. By detailed analysis of obtained TG-DTG profiles, it was established that process takes place through the multiple-step reaction pathways, due to many vigorous radical reactions, causes by polymers degradation. The performed research was done to evaluate the possible utilization of coronavirus waste to energy production and sustainable pandemic environmental risk reduction.
本文探讨了加热速率对冠状病毒防护口罩燃烧特性（反应活性及反应活性评估、着火指数（ ）、燃尽指数（ ）、燃烧性能指数（ ）和燃烧稳定性指数（ ））的影响。通过在空气气氛中采用热重-微商热重分析（TG-DTG）并直接与质谱联用（MS），研究了两种处于不同状态（新的和使用过的）的常用口罩。基于实验结果，讨论了元素分析和工业分析数据对逸出气体分析（EGA）的影响。此外，还将热分析（TA）数据得出的值与文献中关于口罩各组成材料的报道进行了比较。根据所开展的研究，确定了在不同加热速率下不同的最大反应速率值表明冠状病毒防护口罩热氧化降解的复杂性，这种降解是由碳氧化反应和挥发性物质（VM）释放所激发的。通过对获得的TG-DTG曲线进行详细分析，确定该过程通过多步反应途径发生，这是由于聚合物降解引发的许多剧烈自由基反应所致。开展这项研究是为了评估冠状病毒废弃物用于能源生产以及降低可持续大流行环境风险的可能性。
