Mechanical performance of biocomposites based on PLA and PHBV reinforced with natural fibres - A comparative study to PP
Mechanical performance of biocomposites based on PLA and PHBV reinforced with natural fibres - A comparative study to PP
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DOI：
10.1016/j.compscitech.2010.06.005
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发表时间：
2010-10-31
影响因子：
9.1
通讯作者：
Jaszkiewicz, A.
中科院分区：
文献类型：
--
作者：
Bledzki, A. K.;Jaszkiewicz, A.
在给定的研究论文中，增强聚乳酸（PLA）和聚（3-羟基丁酸酯-co-3-羟基戊酸酯）（PHBV）生物聚合物的力学性能的影响进行了研究。PLA和PHBV均与人造纤维素、黄麻和马尼拉麻纤维复合。通过注塑成型加工测试棒样本。采用拉伸、冲击等多种测试方法研究了复合材料的力学性能。用扫描电镜观察纤维-基质间的粘附情况。为了确定纤维尺寸分布，使用光学显微镜。最后，将所得结果与具有相同增强纤维的PP基复合材料进行比较，纤维增强显著提高了拉伸刚度和强度：然而，根据纤维类型，实现了不同的力学参数改善。通过用人造纤维素纤维增强生物聚合物，实现了冲击和拉伸强度的主要增强。SEM照片显示，与PP复合材料相比，PLA和PHBV的纤维/基体结合有很大不同。最宽的纤维尺寸分布可以在蕉麻复合材料中找到。(c)2010爱思唯尔有限公司版权所有。
In the given research paper, the effects of reinforcing polylactid (PLA) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) biopolymers on the mechanical performance were studied. Both PLA and PHBV were compounded with man-made cellulose, jute and abaca fibres. The test bar specimens were processed via injection moulding. Various testing methods, including tensile and impact tests, were used to investigate the composites' mechanical performance. Scanning electron microscopy was carried out to study the fibre-matrix interphasial adhesion. To determine the fibre-size distribution, optical microscopy was used. Finally, the obtained results were compared to composites on PP basis with the same reinforcing fibres.The reinforcing with fibres increased the tensile stiffness and strength significantly: however, depending on the fibre type, different improvements of the mechanical parameters were achieved. The main enhancement was realised in impact and tensile strength by reinforcing biopolymers with man-made cellulose fibres. SEM photographs show a largely differing fibre/matrix bonding for PLA and PHBV compared to PP composites. The broadest fibre-size distribution can be found in abaca composites. (c) 2010 Elsevier Ltd. All rights reserved.