Seculi Faust, Espinach Francesc X, Julián Fernando, Delgado-Aguilar Marc, Mutjé Pere, Tarrés Quim
LEPAMAP-PRODIS Research Group, University of Girona, 17003 Girona, Spain.
Polymers (Basel). 2022 Dec 10;14(24):5412. doi: 10.3390/polym14245412.
In this study, tensile properties of abaca-reinforced HDPE and BioPE composites have been researched. The strength of the interface between the matrix and the reinforcement of a composite material noticeably impacts its mechanical properties. Thus, the strength of the interface between the reinforcements and the matrices has been studied using micromechanics models. Natural fibers are hydrophilic and the matrices are hydrophobic, resulting in weak interfaces. In the study, a coupling agent based on polyethylene functionalised with maleic acid was used, to increase the strength of the interface. The results show that 8 wt% coupling agent contents noticeably increased the tensile strength of the composites and the interface. Tensile properties obtained for HDPE and BioPE-based coupled composites were statistically similar or better for BioPE-based materials. The use of bio-based matrices increases the possibility of decreasing the environmental impact of the materials, obtaining fully bio-based composites. The article shows the ability of fully bio-based composites to replace others using oil-based matrices.
在本研究中，对蕉麻增强高密度聚乙烯（HDPE）和生物聚乙烯（BioPE）复合材料的拉伸性能进行了研究。复合材料基体与增强材料之间的界面强度对其力学性能有显著影响。因此，已使用微观力学模型研究了增强材料与基体之间的界面强度。天然纤维具有亲水性，而基体具有疏水性，导致界面较弱。在该研究中，使用了一种基于马来酸官能化聚乙烯的偶联剂来提高界面强度。结果表明，8 wt%的偶联剂含量显著提高了复合材料及其界面的拉伸强度。对于基于BioPE的材料，基于HDPE和BioPE的偶联复合材料所获得的拉伸性能在统计学上相似或更好。使用生物基基体增加了降低材料对环境影响的可能性，从而获得完全生物基的复合材料。本文展示了完全生物基复合材料替代其他使用石油基基体的复合材料的能力。
