Comparative tensile strength analysis between epoxy composites reinforced with curaua fiber and glass fiber

Maciel, Natália de Oliveira Roque; Ferreira, Jordana; Vieira, Janaina da Silva; Ribeiro, Carolina Gomes Dias; Lopes, Felipe Perissé Duarte; Margem, Frederico Muylaert; Monteiro, Sérgio Neves; Vieira, Carlos Maurício Fontes; Silva, Luís Carlos da

doi:10.1016/j.jmrt.2018.03.009

Cited by 44 publications

(23 citation statements)

References 5 publications

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“…Figure 8 shows the graphs corresponding to the results of tensile strength, elastic modulus, and elongation presented in Table 2 . The tensile strength values obtained for the DGEBA-TETA epoxy resin are comparable with values already consolidated in the literature [ 2 , 23 , 27 ]. The results show relatively superior tensile properties for composites reinforced with different volume fractions of carnauba fibers.…”

Section: Resultssupporting

confidence: 86%

“…Sustainable action to mitigate worldwide pollution and climate changes are promoting the use of natural materials in the substitution for synthetic ones. A typical example is the use of fibers extracted from plants replacing glass fibers as reinforcement in polymer matrix composites [ 1 , 2 , 3 ]. Indeed, composites reinforcement with natural lignocellulosic fibers (NLFs) are likely to be environmentally friendly than glass fiber composites (fiberglass) in terms of biodegradability and reduced process energy [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, composites reinforcement with natural lignocellulosic fibers (NLFs) are likely to be environmentally friendly than glass fiber composites (fiberglass) in terms of biodegradability and reduced process energy [ 1 ]. Moreover, the density-rationalized specific strength of some NLF composites are superior to that of fiberglass [ 2 ]. In addition, NLFs are comparatively less expensive and nonabrasive to processing equipments, which contribute to their cost effectiveness [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

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Copernicia Prunifera Leaf Fiber: A Promising New Reinforcement for Epoxy Composites

et al. 2020

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A basic characterization of novel epoxy matrix composites incorporated with up to 40 vol% of processed leaf fibers from the Copernicia prunifera palm tree, known as carnauba fibers, was performed. The tensile properties for the composite reinforced with 40 vol% of carnauba fibers showed an increase (40%) in the tensile strength and (69%) for the elastic modulus. All composites presented superior elongation values in comparison to neat epoxy. Izod impact tests complemented by fibers/matrix interfacial strength evaluation by pullout test and Fourier transformed infrared (FTIR) analysis revealed for the first time a significant reinforcement effect (> 9 times) caused by the carnauba fiber to polymer matrix. Additional thermogravimetric analysis (TG/DTG) showed the onset of thermal degradation for the composites (326 ~ 306 °C), which represents a better thermal stability than the plain carnauba fiber (267 °C) but slightly lower than that of the neat epoxy (342 °C). Differential scanning calorimetry (DSC) disclosed an endothermic peak at 63 °C for the neat epoxy associated with the glass transition temperature (Tg). DSC endothermic peaks for the composites, between 73 to 103 °C, and for the plain carnauba fibers, 107 °C, are attributed to moisture release. Dynamic mechanical analysis confirms Tg of 64 °C for the neat epoxy and slightly higher composite values (82–84 °C) due to the carnauba fiber interference with the epoxy macromolecular chain mobility. Both by its higher impact resistance and thermal behavior, the novel carnauba fibers epoxy composites might be considered a viable substitute for commonly used glass fiber composites.

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Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Copernicia Prunifera Leaf Fiber: A Promising New Reinforcement for Epoxy Composites

et al. 2020

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“…This proves the reinforcement behavior of the fibers, which also contributes to the ductility of the epoxy matrix. Regarding the results of tensile strength in Table 2 and Figure 5 a for the 30% vol% caranan fiber, it is relevant to establish a comparison with 30 vol% glass fiber reinforcement epoxy composite, as was previously reported for a similar curaua epoxy composite [ 19 ]. The tensile strength of 131 MPa for the glass fiber composite when divided by the composite density (1.55 g/cm 3 ) gives a specific strength (85 MPa) lower than that of the caranan fiber composite (105/0.975 = 108 MPa) Therefore, for this volume fraction, the caranan composite might be a viable substitute for fiberglass.…”

Section: Resultsmentioning

confidence: 89%

“…Widely available in nature, natural lignocellulosic fibers (NLFs) are increasingly being considered sustainable alternatives for replacing synthetic fibers as polymer composite reinforcement in both scientific reviews [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ] and possible industrial applications [ 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. In fact, the specific properties (divided by the density) of the NLF composites are in some cases better than those of glass fiber composites (fiberglass) [ 19 , 20 ]. Moreover, Joshi et al [ 21 ] propose that NLF composites are likely to be environmentally superior to fiberglass in most applications.…”

Section: Introductionmentioning

confidence: 99%

Caranan Fiber from Mauritiella armata Palm Tree as Novel Reinforcement for Epoxy Composites

et al. 2020

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A growing environmental concern is increasing the search for new sustainable materials. In this scenario, natural lignocellulosic fibers (NLFs) became an important alternative to replace synthetic fibers commonly used as composites reinforcement. In this regard, unknown NLFs such as the caranan fiber (Mauritiella armata) found in South American rain forests revealed promising properties for engineering applications. Thus, for the first time, the present work conducted a technical characterization of caranan fiber-incorporated composites. Epoxy matrix composites with 10, 20 and 30 vol% of continuous and aligned caranan fibers were investigated by tensile tests, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Composites with more than 10% vol of caranan fibers significantly increase the elastic modulus and toughness in comparison to the neat epoxy. Indeed, the composite with 30 vol% was 50% stiffer, 130% tougher, and 100% stronger, which characterized an effective reinforcement. As for the elastic modulus, total strain and tensile toughness, there is a clear tendency of improvement with the amount of caranan fiber. The TGA disclosed the highest onset temperature of degradation (298 °C) with the least mass loss (36.8%) for the 30 vol% caranan fiber composite. It also displayed a higher degradation peak at 334 °C among the studied composites. The lowest glass transition temperature of 63 °C was obtained by DSC, while the highest of 113 °C by dynamic mechanical analysis (DMA) for the 30 vol% caranan composite. These basic technical findings emphasize the caranan fiber potential as reinforcement for polymer composites.

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Elaboration and characterization of biocomposite based on polylactic acid and Moroccan sisal fiber as reinforcement

et al. 2021

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The aim of the current study is to further investigate the impact of the sisal fiber content up to 30% on the mechanical and thermal properties of polylactic acid (PLA) matrix composites following up to our previous study for sisal content up to 15%. The biocomposites were prepared successfully using a twinscrew extruder and an injection molding machine. It was found that 20 m% resulted the best mechanical, dynamic mechanical, and thermal properties among the tested fiber contents. Beyond this weight fraction of sisal, these properties showed a slight decrease probably because of reaching the threshold percolation corresponding to weight fraction limit before the aggregations started to form in the matrix. This finding was supported by scanning electron microscopy. The degree of crystallinity increased until reaching 10% fiber content, but not above. The results reveal that the reinforcement of PLA by sisal fiber does not only improve mechanical properties but also it could be used as a nucleating agent for the PLA. Moreover, a new relationship is proposed to characterize the effectiveness of the composite due to the addition of sisal fiber.The performance of the biocomposites developed makes them capable for applications in various fields such as aeronautics, automotive, and construction. K E Y W O R D Scomposites, mechanical properties, natural fiber, thermal properties, thermoplastics | INTRODUCTIONThe composite materials offer several advantages including lightweight, high strength, corrosion resistance, and design flexibility. [1] The environmental concern has led scientists to focus on a new generation of sustainable composite materials, so-called green composites. The conventional structural composite materials include synthetic fibers as reinforcement (glass fiber, carbon fiber, etc.) and non-biodegradable matrices such as epoxy resin, polyester resin, and so forth. [2] However, the use of petroleum-based composite materials could have an environmental impact (climate change, pollution, greenhouse effect, difficult recycling). The advantages of natural fibers such as low cost, abundance, low density show the potential of these fibers for the replacement of synthetic fibers. [3] Natural

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Comparative tensile strength analysis between epoxy composites reinforced with curaua fiber and glass fiber

Cited by 44 publications

References 5 publications

Copernicia Prunifera Leaf Fiber: A Promising New Reinforcement for Epoxy Composites

Copernicia Prunifera Leaf Fiber: A Promising New Reinforcement for Epoxy Composites

Caranan Fiber from Mauritiella armata Palm Tree as Novel Reinforcement for Epoxy Composites

Elaboration and characterization of biocomposite based on polylactic acid and Moroccan sisal fiber as reinforcement

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