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首页> 外文期刊>Journal of Polymers and the Environment >Fused Deposition Modeling of Poly (lactic acid)/Nutshells Composite Filaments: Effect of Alkali Treatment
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Fused Deposition Modeling of Poly (lactic acid)/Nutshells Composite Filaments: Effect of Alkali Treatment

机译：聚（乳酸）/坚果复合细丝的融合沉积建模：碱处理的影响

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摘要

In this work, four kinds of nutshells (including walnut, almond, macadamia and wild almond shell powder (WSP, ASP, MSP and WASP) were composed with poly (lactic acid) (PLA). Fused deposition modeling technology was used to prepare the PLA/nutshell composite filaments. Nutshells were investigated by means of Fourier transform infrared spectroscopy regardless of the treatment with alkali. The composites were characterized by using: differential scanning calorimetry, thermogravametric, scanning electron microscopy. Meanwhile, the water-resistance and tensile properties were examined. The results showed that the thermal stability, water-resistant ability and tensile properties of untreated composites got worse comparing with that of PLA, but were enhanced dramatically after NaOH treatment. PLA/treated WASP has the highest degradation temperature. The crystallization degree of PLA/treated MSP and PLA/treated WASP was improved, when compared with that of PLA. The tensile strengths of PLA/MSP-Na and PLA/WASP-Na were almost close to that of PLA. PLA/MSP composite was the most water-resistant regardless of surface treatment. Those results indicated that the four kinds of composites have a potential application to manufacture structural parts with lighter weight.
机译：在这项工作中，使用聚（乳酸）（PLA）组成了四种坚果壳（包括核桃，杏仁，澳洲和野生杏仁壳粉（WSP，ASP，MSP和WASP）。使用融合沉积建模技术来准备pla / nutshell复合丝。通过傅立叶变换红外光谱研究了坚果壳，无论用碱处理。通过使用：差分扫描量热法，热重扫描，扫描电子显微镜，表征复合材料。同时，耐水性和拉伸性质检查结果表明，未处理复合材料的热稳定性，防水能力和拉伸性能与PLA的热稳定性，但在NaOH处理后急剧增强。PLA /处理的黄蜂具有最高的降解温度。结晶程度与PLA相比，改善了PLA /处理的MSP和PLA /处理的黄蜂。PLA / MSP的拉伸强度-NA和PLA / WASP-NA几乎接近PLA。无论表面处理如何，PLA / MSP复合材料都是最耐水性的。这些结果表明，四种复合材料具有潜在的应用，以制造具有更轻的结构部件。

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