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首页> 外文期刊>International journal of sustainable engineering >A circular economy use of waste wood sawdust for wood plastic composite production: effect of bio-plasticiser on the toughness
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A circular economy use of waste wood sawdust for wood plastic composite production: effect of bio-plasticiser on the toughness

机译：用于木材塑料复合生产的废木锯末的循环经济利用：生物增塑剂对韧性的影响

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This research aims to improve the toughness of Poly(lactic acid) (PLA)/wood sawdust (WS) composite by plasticising with tributyrin bio-plasticiser. Experimental results showed the toughness achievement of the plasticised PLA/WS composite, which reflected as the increase of the tensile strain at break and impact resistance. Thermal test indicated that the plasticised composites crystallised earlier than neat PLA and PLA/WS at lower crystallisation temperature (T-c) together with the increased degree of crystallinity (X-c). Thermal degradation test revealed that PLA/WS composite were less stable with the plasticiser incorporation, while the heat distortion temperature (HDT) was found to reduce from more than 85 degrees C, in PLA/WS composite, down to less than 60 degrees C when tributyrin was added at 15 wt%. Dynamic mechanical analysis (DMA) indicated that with increasing the tributyrin plasticiser content, the storage modulus (E') was proportionally decreased. Thermogravimetric analysis (TGA) showed that the plasticised PLA/WS composite decomposed earlier than neat PLA and PLA/WS composite due to the decomposition of low molecular weight compositions. Fourier transform infrared (FT-IR) analysis indicated there was no chemical interaction among the raw materials added. The plasticised composites were found to absorb lower amount of water due to the incorporation of non-polar plasticiser.
机译：该研究旨在通过用呋喃丁生物增塑剂塑化来改善聚（乳酸）/木锯末（WS）复合材料的韧性。实验结果表明，塑料化PLA / WS复合材料的韧性实现，其反映为断裂抗冲击性抗拉菌株的增加。热敏测试表明，在较低结晶温度（T-C）的齐颗纯PLA和PLA / Ws的塑料复合材料与较低的结晶度（X-C）一起结晶。热降解测试显示，PLA / WS复合材料对增塑剂掺入较小，而在PLA / WS复合材料中，发现热变形温度（HDT）在PLA / WS复合材料中从85℃下减少到小于60摄氏度在15wt％中加入呋喃酮。动态力学分析（DMA）表明，随着呋喃林增塑剂含量的增加，储存量模（E'）比例地降低。热重分析（TGA）显示，由于低分子量组合物的分解，塑化的PLA / WS复合材料早于纯PLA和PLA / WS复合材料。傅里叶变换红外（FT-IR）分析表明，添加的原料中没有化学相互作用。发现塑料复合材料由于掺入非极性增塑剂而吸收较低的水。

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