Impact of corona treated hemp fibres onto mechanical properties of polypropylene composites made thereof

Ragoubi, Mohamed; Bienaimé, David; Molina, Stéphane; George, B.; Merlin, André

doi:10.1016/j.indcrop.2009.12.004

Cited by 162 publications

(69 citation statements)

References 18 publications

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“…Vale ressaltar que o compósito com maior fração volumétrica e maior comprimento de fibra (3%CRF45) apresentou um comportamento diferenciando comparado aos demais compósitos reforçado, isso pode ser atribuído a dificuldade de moldagem do mesmo o que influenciou em sua homogeneidade, pois seu comportamento não corresponde ao apresentado pela literatura [23], [24], [25] Com intenção de caracterizar a tenacidade dos compósitos e comparar o desempenho de diferentes frações e comprimentos de fibras, foram determinados, através das curvas de carga por deslocamento, os ín-dices I 5, I 10 , I 20 e I 30 propostos pela norma ASTM C1609, Standard test method for flexural performance of Fiber-Reinforced concret (Using Beam with third-point loading) [13] os valores de F t e T jcl , propostos pelo método japonês JSCE -SF4-Method of tests for flexural strength and flexural toughness of steel fiber reinforced concrete [15], além dos índices de resistência e o fator de tenacidade propostos pela norma belga NBN B 15-238 Tests on fibre reinforced concret -Bending test on prismatic sample [14].…”

Section: Resultsunclassified

Resposta à flexão e análise de tenacidade de argamassas reforçadas com fibra de Curauá

Pimentel¹,

Borges²,

Picanço³

et al. 2016

Matéria (Rio J.)

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RESUMOO desenvolvimento e comercialização de materiais compósitos produzidos a partir de fibras naturais são considerados extremamente importante, uma vez que essas fibras reduzirão a dependência dos materiais produzidos com recursos não renováveis. Dentre essas fibras naturais destaca-se a fibra do curauá, sua utilização na produção de compósitos melhora de forma notável as propriedades do conjunto fibra matriz, logo o presente artigo objetiva estudar as propriedades mecânicas de compósitos reforçados com fibra de curauá, em especial sua resistência à flexão e tenacidade. Para isso foram confeccionadas cinco famílias de argamassas, uma de referência sem utilização da fibra e as outras quatro reforçada com fibra variando o comprimento da fibra e sua fração volumétrica. Verificou-se que a fibra do curauá ao ser adicionada em matriz cimentícia melhora suas propriedades mecânicas comparada a um compósito não reforçado com fibra, sua deformação, resistên-cia à flexão e tenacidade são melhoradas.Palavras-chave: comportamento mecânico, fibras naturais, materiais não convencionais, compósitos cimentícios, fibra de curauá. ABSTRACTThe composites material produced from natural fibers development and commercialization are considered extremely important because these fibers will reduce the material produced with non-renewable resources dependence. Among these fibers, there is the Curauá fiber, its use in composites production improves the ensemble matrice fiber properties, then this article aims to study the composites reinforced with Curauá fibers mechanical properties, especially its bending resistance and toughness. For achieve those objectives, it was produced five mortar groups, one for reference, without the fiber utilization, and another four groups with fiber reinforcement varying the fiber length and its volume fraction. It was noted that Curauá fiber, when added to cement matrice, improves its mechanical properties compared to a composite without the fiber reinforcement, its deflection, bending resistance and toughness are improved.

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Section: Resultsunclassified

Resposta à flexão e análise de tenacidade de argamassas reforçadas com fibra de Curauá

Pimentel¹,

Borges²,

Picanço³

et al. 2016

Matéria (Rio J.)

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“…corona treatment [17], [18], plasma treatments [19]- [21] and electron beam irradiation [22]) alter the surface properties of the natural fibres enhancing the mechanical bonding between fibre and matrix, with no alteration of the chemical composition of the fibres.…”

Section: Introductionmentioning

confidence: 99%

A new eco-friendly chemical treatment of natural fibres: Effect of sodium bicarbonate on properties of sisal fibre and its epoxy composites

Fiore

Scalici

Nicoletti

et al. 2016

Composites Part B: Engineering

284

146

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“…This ionization creates radicals on the surface of the fibers and promotes fiber-matrix bonding. Ragoubi et al [35] investigated the mechanical properties of composites obtained from different combinations of untreated and corona-treated hemp fibers and PP matrix. The corona treatment resulted in a significant increase in tensile strength with 30% enhancement in Young'sm o d u l u s .A u t h o r s reported that the etching effect generated by corona treatment which is evidenced by microscopy increased the mechanical locking between fibers and the matrix and therefore resulted in enhanced mechanical properties.…”

Section: Corona Treatmentmentioning

confidence: 99%

Interfacial Modification of Hemp Fiber–Reinforced Composites

Karaduman¹,

Özdemir²,

Karaduman³

et al. 2018

Natural and Artificial Fiber-Reinforced Composites as Renewable Sources

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Natural fiber-reinforced biocomposites are increasingly used in various industries such as automotive, construction, biomedical, and recreation, thanks to their distinctive advantages over traditional glass fiber-reinforced plastics. Natural fiber composites are sustainable, environmentally friendly, low cost, low density, and easy to proc es sasw ella sha v ehi ghmec ha n ic alproperties. The quality of fiber-matrix interface is of critical importance since it determines the load distribution capability of the material. The interface between natural fibers and polymer resins has always been problematic because of the low compatibility between cellulose-based hydrophilic natural fibers and hydrophobic polymer resins, which leads to poor fiber-matrix adhesion and therefore inefficient load distribution between fibers and matrix. To date, several interfacial modification methods have been implemented to address this issue and improve the properties of the resulting composites. This chapter focuses on the interfacial modification of hemp fiber-based composites. First, hemp fiber structure and the nature of fiber-matrix interface were explained. Mechanisms of fiber/matrix adhesion as well as qualitative and quantitative methods for the determination of interface strength were outlined. Finally, the interface modification methods for hemp fiber-reinforced biocomposites were presented in the light of scientific literature.

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Impact of corona treated hemp fibres onto mechanical properties of polypropylene composites made thereof

Cited by 162 publications

References 18 publications

Resposta à flexão e análise de tenacidade de argamassas reforçadas com fibra de Curauá

Resposta à flexão e análise de tenacidade de argamassas reforçadas com fibra de Curauá

A new eco-friendly chemical treatment of natural fibres: Effect of sodium bicarbonate on properties of sisal fibre and its epoxy composites

Interfacial Modification of Hemp Fiber–Reinforced Composites

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