Flores André Luis Lima, Kairytė Agnė, Šeputytė-Jucikė Jurga, Makowska Sylwia, Lavoratti Alessandra, de Avila Delucis Rafael, Amico Sandro Campos
Postgraduate Program in Mining, Metallurgical and Materials Engineering, Federal University of Rio Grande do Sul, Porto Alegre 91501-970, Brazil.
Laboratory of Thermal Insulating Materials and Acoustics, Institute of Building Materials, Faculty of Civil Engineering, Vilnius Gediminas Technical University, Linkmenų St. 28, 08217 Vilnius, Lithuania.
Materials (Basel). 2024 May 14;17(10):2320. doi: 10.3390/ma17102320.
Natural fiber composites have been extensively studied for structural applications, with recent exploration into their potential for various uses. This study investigates the impact of chemical treatments on the properties of Brazilian jute woven fabric/polyester resin composites. Sodium hydroxide, hydrogen peroxide, and peracetic acid were utilized to treat the jute fabrics, followed by resin transfer molding (RTM) to form the composites. Evaluation included water absorption, flexural strength, tensile strength, and short-beam strength. The alkaline treatment induced changes in the chemical composition of the fibers' surface. Chemical treatments resulted in increased flexural and short-beam strength of the composites, with no significant alterations in tensile properties. The hydrogen peroxide treatment exhibited lower water absorption, suggesting its potential as a viable option for enhancing the performance of these composites.
天然纤维复合材料已被广泛研究用于结构应用，最近还探索了它们在各种用途中的潜力。本研究调查了化学处理对巴西黄麻机织织物/聚酯树脂复合材料性能的影响。使用氢氧化钠、过氧化氢和过氧乙酸处理黄麻织物，然后通过树脂传递模塑（RTM）形成复合材料。评估包括吸水性、弯曲强度、拉伸强度和短梁强度。碱处理导致纤维表面化学成分发生变化。化学处理使复合材料的弯曲强度和短梁强度增加，而拉伸性能没有显著变化。过氧化氢处理表现出较低的吸水性，表明其作为提高这些复合材料性能的可行选择的潜力。
