Optimization and characterization of surface treated Lagenaria siceraria fiber and its reinforcement effect on epoxy composites

IF 1.3 4区材料科学 Q3 CHEMISTRY, APPLIED

Pigment & Resin Technology Pub Date : 2022-01-25 DOI:10.1108/prt-08-2021-0093

S. N., N. B, B. G, P. R

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引用次数: 0

Abstract

Purpose This paper aims to investigate the resultant optimal ultimate tensile strength, elongation, flexural strength and modulus, compression strength and impact strength of fabricated alkali-treated Lagenaria siceraria fiber (LSF)-reinforced polymer matrix composite by optimizing input factors and microstructural characterization by influencing fiber length, fiber concentration and treatment condition of LSF. Design/methodology/approach The fabrication of LSF-reinforced composite specimens involved surface treatment followed by custom experimental design using a simple hand layup process. The wear analysis was performed by a multi-tribotester TR25 machine, and the developed model was validated by using statistical software Design Expert V.8 and analysis of variance (ANOVA). The surface morphology of the sample was also analyzed by field emission scanning electron microscopy. Findings The alkali treatment for LSFs had reduced the hemicellulose, and enhanced mechanical performance was observed for 30 wt.% concentration of L. siceraria in epoxy resin. Thermogravimetric analysis revealed thermal stability up to 245°C; microstructure revealed fiber entanglements in case of longer fiber length and compression strength reduction; and the surface-treated fiber composites exhibited reduced occurrences of defects and enhanced matrix–fiber bonding. Enhanced mechanical performances were observed, namely, ultimate tensile strength of 17.072 MPa, elongation of 1.847%, flexural strength of 50.4 MPa, flexural modulus of 3,376.31 GPa, compression strength of 52.154 MPa and impact strength of 0.53 joules. Originality/value The novel approach of optimizing and characterizing alkali surface-treated LSF-reinforced epoxy matrix composite was explored, varying fiber length and concentrations for specimens by empirical relations and experimental design to obtain optimal performance validated by ANOVA. Enhanced properties were obtained for: 7 mm fiber length and 30 wt.% concentration of fiber in the composite for alkali-treated fiber.

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表面处理lageraria siceraria纤维的优化、表征及其对环氧复合材料的增强效果

目的通过优化输入因素和影响纤维长度的微观结构表征，研究制备的碱处理硅碳纤维增强聚合物基复合材料的最佳极限抗拉强度、伸长率、弯曲强度和模量、压缩强度和冲击强度，LSF的纤维浓度和处理条件。设计/方法/方法LSF增强复合材料试样的制造包括表面处理，然后使用简单的手工叠层工艺进行定制实验设计。磨损分析由TR25多摩擦试验机进行，开发的模型通过统计软件Design Expert V.8和方差分析（ANOVA）进行验证。通过场发射扫描电子显微镜对样品的表面形貌进行了分析。结果：在环氧树脂中加入浓度为30 wt.%的干燥乳杆菌后，LSFs的碱处理使半纤维素含量降低，力学性能提高。热重分析显示热稳定性高达245°C；微观结构显示，在纤维长度较长和压缩强度降低的情况下，纤维缠结；表面处理的纤维复合材料减少了缺陷的发生，增强了基体与纤维的结合。观察到增强的机械性能，即极限拉伸强度为17.072MPa，伸长率为1.847%，弯曲强度为50.4MPa，弯曲模量为3376.31GPa，压缩强度为52.154MPa，冲击强度为0.53焦耳。独创性/价值探索了优化和表征碱表面处理LSF增强环氧基复合材料的新方法，通过经验关系和实验设计改变试样的纤维长度和浓度，以获得ANOVA验证的最佳性能。对于碱处理纤维，当纤维长度为7mm，纤维浓度为30wt%时，获得了增强的性能。

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来源期刊

Pigment & Resin Technology 工程技术-材料科学：膜

CiteScore

2.80

自引率

21.40%

发文量

审稿时长

>12 weeks

期刊介绍： The journal looks at developments in: ■Adhesives and sealants ■Curing and coatings ■Wood coatings and preservatives ■Environmentally compliant coating systems and pigments ■Inks for food packaging ■Manufacturing machinery - reactors, mills mixing and dispersing equipment, pumps ■Packaging, labeling and storage ■Plus topical features and news on materials, coatings, industry people, conferences, books and so on ■Raw materials such as pigments, solvents, resins and chemicals ■Testing equipment and procedures