The objective of this work was to analyze the influence of the alkalization and alkalization + silanization (mixed) treatments on the interfacial adhesion and mechanical properties of intralaminar hybrid composites (jute + sisal, jute + curauá, jute + ramie, and jute + glass fiber). Single‐fiber tensile tests, fragmentation, and short beam tests were performed. Finally, a SEM analysis was used to study the influence of surface chemical treatments on the morphology of the natural fibers used. SEM images showed that the chemical treatments altered the morphology of the natural fibers. The chemical treatments improved the tensile strength of the fibers studied. It was found that the alkaline treatment is the best suited for jute, ramie, and curauá fibers, while the sisal fiber presented the best results after the mixed treatment. The superficial chemical treatments also affect the interfacial/interlaminar adhesion of the hybrid composites studied here. The best superficial treatments for each type of hybrid composite were: alkaline treatment for jute + ramie and jute + sisal, while for jute + curauá the best results were obtained for the untreated specimens.

中文翻译：

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表面处理对天然层内杂化复合材料界面性能的影响

这项工作的目的是分析碱化和碱化+硅烷化（混合）处理对层内杂化复合材料（黄麻+剑麻，黄麻+库拉阿，黄麻+ ie麻和黄麻+玻璃纤维）的界面附着力和力学性能的影响。 ）。进行了单纤维拉伸试验，破碎和短梁试验。最后，使用SEM分析来研究表面化学处理对所用天然纤维形态的影响。SEM图像表明化学处理改变了天然纤维的形态。化学处理提高了所研究纤维的拉伸强度。发现碱性处理最适合黄麻，麻和姜黄纤维，而剑麻纤维在混合处理后表现出最佳效果。表面化学处理也会影响此处研究的杂化复合材料的界面/层间粘合力。每种杂化复合材料的最佳表面处理方法是：对黄麻+ +麻和黄麻+剑麻进行碱处理，而对黄麻+curauá进行未经处理的标本可获得最佳结果。