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Process Intensification of Thermoplastic Lignocellulose Production through High-Solids Reactive Extrusion Enabled by a Novel Recycle Loop
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-09-20 , DOI: 10.1021/acs.iecr.1c02393 Jinlei Li 1 , David J. W. Lawton 2 , Guerino G. Sacripante 1 , Michael R. Thompson 1 , Heera S. Marway 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-09-20 , DOI: 10.1021/acs.iecr.1c02393 Jinlei Li 1 , David J. W. Lawton 2 , Guerino G. Sacripante 1 , Michael R. Thompson 1 , Heera S. Marway 1
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To reduce the reactant concentration necessary for producing a newly synthesized thermoplastic lignocellulose from forestry waste, this study explores the concept of a recycle stream as a chemical unit operation in a reactive extrusion process. Modified lignocellulose from the first pass was returned to the start of the extrusion process to act as a lubricant for the lignocellulose feedstock. By this action, a high lignocellulose content could be extruded without requiring costly lubrication alternatives such as plasticizing additives, solvents, or excessive quantities of liquid reactants. With 25% recycled material, a significantly improved processing state was found, allowing for a reduction in total reactant usage by 50% without change to the degree of modification and ultimately leaving less unreacted species in the final product. The thermoplastic nature of the modified lignocellulose was characterized by thermal and rheological analysis and was found to demonstrate greater flowability with any recycle stream fraction.
中文翻译：
通过新型循环回路实现的高固体反应挤出工艺强化热塑性木质纤维素生产
为了降低从林业废物生产新合成的热塑性木质纤维素所需的反应物浓度，本研究探索了循环流的概念，作为反应挤出过程中的化学单元操作。来自第一道次的改性木质纤维素返回到挤出过程的开始处以充当木质纤维素原料的润滑剂。通过这种作用，可以挤出高含量的木质纤维素，而无需昂贵的润滑替代品，例如增塑添加剂、溶剂或过量的液体反应物。使用 25% 的回收材料，发现显着改善了加工状态，允许将总反应物使用量减少 50%，而不会改变改性程度，并最终在最终产品中留下更少的未反应物质。
更新日期：2021-09-29
中文翻译：
通过新型循环回路实现的高固体反应挤出工艺强化热塑性木质纤维素生产
为了降低从林业废物生产新合成的热塑性木质纤维素所需的反应物浓度，本研究探索了循环流的概念，作为反应挤出过程中的化学单元操作。来自第一道次的改性木质纤维素返回到挤出过程的开始处以充当木质纤维素原料的润滑剂。通过这种作用，可以挤出高含量的木质纤维素，而无需昂贵的润滑替代品，例如增塑添加剂、溶剂或过量的液体反应物。使用 25% 的回收材料，发现显着改善了加工状态，允许将总反应物使用量减少 50%，而不会改变改性程度，并最终在最终产品中留下更少的未反应物质。
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