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首页> 美国卫生研究院文献>Polymers >Effect of Almond Shell Waste on Physicochemical Properties of Polyester-Based Biocomposites
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Effect of Almond Shell Waste on Physicochemical Properties of Polyester-Based Biocomposites

机译：杏仁壳废料对聚酯基生物复合材料理化特性的影响

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摘要

Polyester-based biocomposites containing INZEA F2 biopolymer and almond shell powder (ASP) at 10 and 25 wt % contents with and without two different compatibilizers, maleinized linseed oil and Joncryl ADR 4400 , were prepared by melt blending in an extruder, followed by injection molding. The effect of fine (125–250 m) and coarse (500–1000 m) milling sizes of ASP was also evaluated. An improvement in elastic modulus was observed with the addition of< both fine and coarse ASP at 25 wt %. The addition of maleinized linseed oil and Joncryl ADR 4400 produced some compatibilizing effect at low filler contents while biocomposites with a higher amount of ASP still presented some gaps at the interface by field emission scanning electron microscopy. Some decrease in thermal stability was shown which was related to the relatively low thermal stability and disintegration of the lignocellulosic filler. The added modifiers provided some enhanced thermal resistance to the final biocomposites. Thermal analysis by differential scanning calorimetry and thermogravimetric analysis suggested the presence of two different polyesters in the polymer matrix, with one of them showing full disintegration after 28 and 90 days for biocomposites containing 25 and 10 wt %, respectively, under composting conditions. The developed biocomposites have been shown to be potential polyester-based matrices for use as compostable materials at high filler contents.
机译：含有INZEA F2生物聚合物和杏仁壳粉（ASP）含量分别为10和25 wt％的聚酯基生物复合材料，有和没有两种不同的增容剂，马来酸亚麻籽油和Joncryl ADR 4400，是通过在挤出机中熔融共混，然后注塑制成的。还评估了ASP的精磨（125–250 m）和粗磨（500–1000 m）尺寸的影响。通过添加25wt％的细和粗ASP均观察到弹性模量的改善。场发射扫描电子显微镜观察到，马来酸亚麻籽油和Joncryl ADR 4400在低填料含量下产生了一定的增容效果，而具有较高ASP含量的生物复合材料在界面处仍存在一些间隙。显示了热稳定性的一些降低，这与木质纤维素填料的相对低的热稳定性和崩解有关。添加的改性剂为最终的生物复合材料提供了增强的耐热性。通过差示扫描量热法和热重分析法进行的热分析表明，聚合物基质中存在两种不同的聚酯，其中一种分别在堆肥条件下，分别含有25和10 wt％的生物复合材料在28天和90天后会完全崩解。已显示出开发的生物复合材料是潜在的基于聚酯的基质，可用作高填料含量的可堆肥材料。

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