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首页> 外文期刊>Energy Conversion & Management >Synergistic effects of wood fiber and polylactic acid during co-pyrolysis using TG-FTIR-MS and Py-GC/MS
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Synergistic effects of wood fiber and polylactic acid during co-pyrolysis using TG-FTIR-MS and Py-GC/MS

机译：TG-FTIR-MS和Py-GC / MS在共热解过程中木纤维和聚乳酸的协同作用

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摘要

In this study, WF (wood fiber)/PLA (polylactic acid) composites were pyrolyzed to study the synergistic effects during co-pyrolysis of WF-PLA blends. The co-pyrolysis kinetics, mechanism of synergistic effects and products distribution were studied by TG-FTIR-MS and Py-GC/MS. Through the analysis of co-pyrolysis kinetics, it was found that the activation energy of WF-PLA blends was lower than that of sole WF or PLA. The pyrolysis activation energy of 30%wt WF/PLA composites decreased by 70 KJ/mol compared to sole PLA. TG-FTIR-MS and Py-GC/MS analysis showed the production of lactide increased significantly accompanied by a decrease in acetaldehyde and CO during co-pyrolysis. The interactions between WF and PLA promoted the positive synergistic effects. The synergistic effects essentially promoted the free radical reaction of the PLA during copyrolysis, thereby reducing the activation energy of the co-pyrolysis and obtaining more recoverable lactide. This work provided a reference for the reuse of waste PLA and WF in energy field, and provided a solution to the potential PLA pollution.
机译：在这项研究中，WF（木纤维）/ PLA（聚乳酸）复合材料被热解以研究WF-PLA共混物共热解过程中的协同作用。用TG-FTIR-MS和Py-GC / MS研究了共热解动力学，协同作用机理和产物分布。通过共热解动力学分析，发现WF-PLA共混物的活化能比单独的WF或PLA低。与唯一的PLA相比，30％wt WF / PLA复合材料的热解活化能降低了70 KJ / mol。 TG-FTIR-MS和Py-GC / MS分析表明，在共热解过程中丙交酯的产生显着增加，同时乙醛和CO减少。 WF与PLA之间的相互作用促进了积极的协同效应。协同作用实质上促进了六分解中PLA的自由基反应，从而降低了共热分解的活化能并获得了更多可回收的丙交酯。这项工作为能源领域废物PLA和WF的再利用提供了参考，并为潜在的PLA污染提供了解决方案。

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