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ABSTRACT
The aim of this paper is to investigate the effect of an alkali treatment on physical, chemical, mechanical, and morphological properties of Phoenix Sp. fibers. The use of natural fibers as reinforcement in polymer composites requires a deep investigation to understand their behavior and which treatment is more appropriate to improve the quality of the untreated material. For this reason, fibers were extracted from the petioles of the Phoenix Sp. plant and they were treated with NaOH solution in different weight concentrations (5%, 10%, and 15%). The mechanical behavior was investigated through tensile test on single fiber at different gauge length (20 mm, 30 mm, 40 mm, 50 mm, and 60 mm). Chemical and physical analysis were performed to define the material properties. In particular, density analysis of untreated and treated fibers, optical analysis to measure the diameter of the fibers, moisture content evaluation, and a chemical composition analysis were carried out through standard methods. The modification of the surface morphology due to the alkali treatment was analyzed through scanning electron microscope analysis.
摘要
本文研究碱处理对Phoenix Sp.（一种葵属植物）纤维的物理、化学、机械和形态性质的影响。在高分子复合材料中将天然纤维用于加固目的，要求深入调查这些天然纤维的行为以及哪些处理有助于改善未经处理的材料的质量。出于这个原因，本研究从Phoenix Sp.植物的叶柄提取纤维，并用不同重量浓度（5％、10％和15％）的NaOH溶液进行处理。力学行为通过在不同计量长度（20毫米、30毫米、40毫米、50毫米和60毫米）的单纤维条件下拉伸进行试验研究。在研究中进行了化学和物理分析以确定材料性质。特别是，对未经处理和经过处理的纤维进行密度分析和光学分析来测量纤维直径，含水量评价和化学成分分析通过标准方法进行。最后，通过扫描电子显微镜分析来分析碱处理对表面形态改性的影响。