Effect of NaOH treatment on mechanical strength of banana/epoxy laminates

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2019-07-23 DOI:10.1177/2041247919863626

Mujahid S. Khan, Sayyadh Rahamathbaba, M. Mateen, D. R. RAVI SHANKAR, M. Manzoor Hussain

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引用次数: 14

Abstract

The present study is focused on studying the effect of alkali treatment on the mechanical properties of banana fiber-reinforced epoxy composites. Four batches of samples were prepared with respect to the percentage of sodium hydroxide (NaOH) in the treatment solution (0%, 2.5%, 4.5%, and 6.5%). Later mechanical tests such as tensile, compressive, and interlaminar shear tests were conducted on the prepared composite specimens to determine the influence of alkali treatment on the mechanical characteristics. The test results indicate an overall improvement in all the mechanical properties due to the fiber treatment. Moreover, the samples made from the fiber treated with 4.5% of NaOH solution indicated the highest tensile strength and compressive strength, with an overall increment of 24.2% and 34.8% in tensile and compressive strengths, respectively, when compared with the untreated sample. A linear increment in interlaminar strength is observed with a maximum value of 25.4 N/mm2 for the sample made from the fiber treated with 6.5% of NaOH solution. This increase is due to the fiber flattening process which increases the bonding surface at the interface.

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NaOH处理对香蕉/环氧树脂层压板力学强度的影响

研究了碱处理对香蕉纤维增强环氧树脂复合材料力学性能的影响。根据处理溶液中氢氧化钠（NaOH）的百分比（0%、2.5%、4.5%和6.5%）制备了四批样品。随后对制备的复合材料样品进行了拉伸、压缩和层间剪切等力学测试，以确定碱处理对力学特性的影响。测试结果表明，由于纤维处理，所有机械性能都得到了全面改善。此外，由用4.5%NaOH溶液处理的纤维制成的样品显示出最高的拉伸强度和压缩强度，与未处理的样品相比，拉伸强度和抗压强度分别增加了24.2%和34.8%。对于由用6.5%的NaOH溶液处理的纤维制成的样品，观察到层间强度的线性增加，最大值为25.4N/mm2。这种增加是由于纤维变平过程增加了界面处的结合表面。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymers from Renewable Resources Materials Science-Polymers and Plastics

CiteScore

3.50

自引率

0.00%

发文量

期刊介绍： Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.