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首页> 外文期刊>Journal of Applied Polymer Science >Controlling lignin particle size for polymer blend applications
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Controlling lignin particle size for polymer blend applications

机译：控制聚合物混合应用的木质素粒度

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Softwood lignin produced by the LignoForce System (TM) was physically processed using different milling approaches to ascertain effective and scalable means to yield micro to submicron particles of controllable and uniform size. Our work suggests that wet ball-milling using a small milling medium is the most reliable method in terms of processing efficiency and particle-size controllability. Controllable particle size reduction would permit lignin to be used as an effective filler in polymer blends. We show that wet-milled lignin could, subsequently, be oven-or spray-dried, and, subsequently, blended with, for instance, polypropylene (PP) through coextrusion. The spray-drying method produced spherical lignin aggregates smaller and more uniform than oven-dried ones. As a consequence, spray-dried lignin demonstrated a more uniform distribution within the polymer melt, leading to noticeable improvement in the strain-or flexibility-of the lignin-PP polymer blends. Furthermore, it is confirmed that the investigated drying methods had no effect on the thermal stability of the resulting lignin-PP blends. (C) 2016 Wiley Periodicals, Inc.
机译：通过木筏系统（TM）产生的软木木质素使用不同的铣削方法物理处理，以确定有效和可扩展的手段，以产生微小到可控且均匀的亚微米粒子。我们的作品表明，在处理效率和粒度可控性方面，使用小铣削介质的湿球磨是最可靠的方法。可控粒度减少将允许木质素用作聚合物共混物中的有效填料。我们表明，随后，湿磨的木质素可以通过共挤出，将湿磨的木质素烘干干燥，然后与例如聚丙烯（PP）混合。喷雾干燥方法产生球形木质素聚集体比烘箱干燥更均匀均匀。因此，喷雾干燥的木质素在聚合物熔体内表现出更均匀的分布，导致木质素-PP聚合物共混物的应变或柔韧性显着改善。此外，证实研究的干燥方法对所得木质素-PP共混物的热稳定性没有影响。 （c）2016 Wiley期刊，Inc。

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