Impact Resistance of Epoxy Composites Reinforced with Amazon Guaruman Fiber: A Brief Report

Reis, Raphael Henrique Morais; Filho, Fabio C. Garcia; Nunes, Larissa Fernandes; Cândido, Verônica Scarpini; Silva, Alisson C. R.; Monteiro, Sérgio Neves

doi:10.3390/polym13142264

Cited by 12 publications

(7 citation statements)

References 30 publications

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“…In these figures, the fracture mechanisms that occurred are associated with the rupture of microfibrils that provide an additional free surface and have the ability to increase the energy of the absorbed impact. This same effect was reported by Reis et al [ 39 ] when evaluating the energy of impact absorbed by guaruman fiber-reinforced epoxy matrix composites.…”

Section: Resultssupporting

confidence: 86%

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Physical and Mechanical Characterization of Titica Vine (Heteropsis flexuosa) Incorporated Epoxy Matrix Composites

et al. 2021

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Titica vine (Heteropsis flexuosa) is a typical plant of the Amazon region commonly used for making baskets, bags, brooms and furniture, owing to its stiff fibers. In spite of its interesting properties, there is so far no reported information regarding the use of titica vine fibers (TVFs) in engineering composite materials. In this work, the TVF and its epoxy composites were for the first time physically, thermally and mechanically characterized. Additionally, the effect of two kinds of chemical treatments, one with sodium carbonate and one with calcium lignosulfonate, as well as different volume fractions, 10, 20, 30 and 40 vol%, of TVF-reinforced composites were assessed for corresponding basic properties. The thermogravimetric results of the composites reveal enhanced thermal stability for higher TVF content. In addition, the composite incorporated with 40 vol% of TVFs treated with sodium carbonate absorbed 19% more water than the composites with untreated fibers. By contrast, the calcium lignosulfonate treatment decreased water absorption by 8%. The Charpy and Izod impact tests showed that the composites, incorporated with the highest investigated volume fraction (40 vol%) of TVF, significantly increased the absorbed energy by 18% and 28%, respectively, compared to neat epoxy. ANOVA and Tukey statistical analyses displayed no direct influence of the chemical treatments on the energy absorption of the composites for either impact tests. SEM images revealed the main fracture mechanisms responsible for the performance of TVF composites.

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Section: Resultssupporting

confidence: 86%

“…In this first preliminary work on the characterization and properties of TVF composites, the matrix was selected as the same DGEBA/TETA epoxy, which has been successfully considered for other Amazon native NLFs [ 38 , 39 , 40 , 41 ].…”

Section: Methodsmentioning

confidence: 99%

Physical and Mechanical Characterization of Titica Vine (Heteropsis flexuosa) Incorporated Epoxy Matrix Composites

et al. 2021

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“…Several studies have revealed an increase in the search for NLFs that can be used to reinforce polymeric composites, among which those found in the Amazon region stand out [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]; for instance, curaua [23,29], buriti [19,30], mallow [27,35], carnauba [38] and titica vine [39]. In addition to Amazon fibers, several other NLFs are being studied as possible reinforcements for polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Periquiteira (Cochlospermum orinocense): A Promising Amazon Fiber for Application in Composite Materials

et al. 2023

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Natural lignocellulosic fibers (NLFs) have in recent decades appeared as sustainable reinforcement alternatives to replace synthetic fibers in polymer composite material applications. In this work, for the first time, the periquiteira (Cochlospermum orinocense), a lesser known NLF from the Amazon region, was analyzed for its density and, by X-ray diffraction (XRD), to calculate the crystallinity index as well as the microfibrillar angle (MFA), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), scanning electron analysis (SEM) and tensile strength. The apparent density found for the periquiteira fiber was 0.43 g/cm3, one of the NLF’s lowest. XRD analysis indicated a crystallinity index of 70.49% and MFA of 7.32°. The TGA disclosed thermal stability up to 250 °C. The FTIR analysis indicated the presence of functional groups characteristic of NLFs. The SEM morphological analysis revealed that the periquiteira fiber presents fine bundles of fibrils and a rough surface throughout its entire length. The average strength value of the periquiteira fiber was found as 178 MPa. These preliminary results indicate that the periquiteira fiber has the potential to be used as a reinforcing agent in polymeric matrices and can generate a lightweight composite with excellent mechanical properties that can be used in various industrial sectors.

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“…It was observed that hybrid composites are much more stable than single-filler composites. Raphael et al [23] investigated the Impact Resistance of fibre Amazon fibre-fortified epoxy resin composite materials. It was observed that there is an increase in impact strength when volume fraction at 30% of Guaruman fibre content, which is better than pure epoxy.…”

Section: Introductionmentioning

confidence: 99%

Investigation of mechanical characteristics of coir fibre/hexagonal boron nitride reinforced polymer composite

Venkatachalam,

Aravindh,

Mark

et al. 2023

Mater. Res. Express

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Coir fibre, derived from the husk of coconuts, is a natural resource and they are biodegradable and renewable. By incorporating them, any product can become more lightweight and durable, meeting the global desire for eco-friendly and efficient designs. This study has the potential to significantly alter the design of components such as switches and enclosures and it has an international research impact on engineering applications. Coir fibres and Hexagonal-Boron Nitride (h-BN) possess superior mechanical, thermal and physical qualities when reinforced with polymers. Hence novel study is carried out to examinecoir fibre/ h-BN reinforcement in epoxy polymer composites.. Response Surface Methodology via Box-Behnken Design (BBD) is utilized to investigate the mechanical properties such as Tensile Strength, Impact Strength and Young’s Modulus of coir fibre/ h-BN reinforced epoxy polymer composite. The effect of input parameters onresponse is evaluated through regression equation and analysis of variance by using statistical Minitab software. The response optimization represents the maximum Young’s modulus (1597 MPa) by combining coir fibre (5 wt.%), Coir fibre powder size (75 µm) and h-BN (1 wt.%). The response optimization portrays the maximum Ultimate Tensile strength(36.83 MPa) by combining coir fibre (1 wt.%), coir fibre powder size (220 µm) and h-BN (3.78 wt.%). The response optimization reveals the maximum Impact strength (98.35 J/m2) by combining coir fibre (5 wt.%), coir fibre powder size (225 µm) and h-BN(1 wt.%). This work emphasises the use of composite materials that are environmental friendly in a variety of industries such as automotive, electrical, etc.

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Impact Resistance of Epoxy Composites Reinforced with Amazon Guaruman Fiber: A Brief Report

Cited by 12 publications

References 30 publications

Physical and Mechanical Characterization of Titica Vine (Heteropsis flexuosa) Incorporated Epoxy Matrix Composites

Physical and Mechanical Characterization of Titica Vine (Heteropsis flexuosa) Incorporated Epoxy Matrix Composites

Periquiteira (Cochlospermum orinocense): A Promising Amazon Fiber for Application in Composite Materials

Investigation of mechanical characteristics of coir fibre/hexagonal boron nitride reinforced polymer composite

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