Review on mechanical properties of natural fiber composites.

Elanchezhian, C.; Ramnath, B. Vijaya; Ramakrishnan, G.; Rajendrakumar, M.; Naveenkumar, V.; Marimuthu, Saravanakumar

doi:10.1016/j.matpr.2017.11.276

Cited by 221 publications

(136 citation statements)

References 11 publications

Supporting

Mentioning

107

Contrasting

Unclassified

Order By: Relevance

“…A água pode migrar para a interface entre a fibra e a matriz, atuando como concentrador de tensão, fragilizando a amostra. Além disso, devido à baixa adesão entre matriz-carga natural e o caráter hidrofílico das cargas, facilitou a absorção de umidade, influenciando diretamente nas propriedades mecânicas das amostras, pois a umidade pode ter feito com que as amostras degradassem por hidrolise, tornando o material mais quebradiço, resultando na diminuição da resistência ao impacto [40][41].…”

Section: Resultados E Discussõesunclassified

Influência de fatores ambientais nas propriedades mecânicas de biocompósitos de pla reforçado com fibra de coco e borra de café

Santos

Passador

Montagna³

2020

Tecno-log.

View full text Add to dashboard Cite

________________________________________________________________________________________________________ RESUMOO desenvolvimento de biocompósitos poliméricos tem despertado tanto o interesse científico quanto industrial em desenvolver produtos ecologicamente corretos para diversas aplicações. Desta forma, este trabalho de pesquisa teve o intuito de desenvolver e caracterizar compósitos biodegradáveis de poli (ácido lático) (PLA), reforçado com diferentes porcentagens (5% e 15% m/m) de fibra de coco (FC) e borra de café (BC), sem tratamento superficial. Tanto a FC quanto a BC são popularmente tratadas como resíduos sólidos e apresentam grande potencial para serem utilizados como cargas naturais agindo como reforço e também como aceleradores da biodegradação em matrizes poliméricas para a obtenção de um material biodegradável. Os compósitos foram processados em um homogeneizador DRAIS seguido de prensagem a quente. As amostras foram caracterizadas pela análise visual (imagens macroscópicas) e medidas de ângulo de contato (goniômetro), bem como foram submetidas aos testes de absorção de água e envelhecimento em estufa, seguido do ensaio de resistência ao impacto Izod. Após, verificou-se absorção de água, perda de massa, análise visual, resistência mecânica ao impacto Izod e a caracterização morfológica por microscopia eletrônica de varredura (MEV) da superfície de fratura das amostras após ensaio mecânico. A partir dos resultados obtidos verificou-se a boa adesão entre as cargas naturais e a matriz de PLA, resultando em valores de resistência ao impacto próximo ao do PLA puro, porém os fatores ambientais influenciaram diretamente nessas propriedades mecânicas, tendo a umidade interferida na redução e no envelhecimento do leve acréscimo dos valores de resistência ao impacto.

show abstract

Section: Resultados E Discussõesunclassified

Influência de fatores ambientais nas propriedades mecânicas de biocompósitos de pla reforçado com fibra de coco e borra de café

Santos

Passador

Montagna³

2020

Tecno-log.

View full text Add to dashboard Cite

show abstract

“…Cellulosic fibers have important properties, for instance, lightweight and non-abrasiveness. In addition, they can improve chemical and mechanical properties, their employment can reduce virgin raw material use and energy consumption [40,41], however require precautions to treat and process [41][42][43].…”

Section: Natural Fibers Applied In Footwearmentioning

confidence: 99%

Panorama of natural fibers applied in Brazilian footwear: materials and market

et al. 2019

View full text Add to dashboard Cite

Footwear material is of great importance mainly considering the user's health. There are many components in contact with upper and mainly lower part of foot, being the sole essential part to weight distribution, muscle activity and vertebral column. This study aimed to verify how the natural fibers are applied at Brazilian market footwear, demonstrating the types of raw materials utilized, textile constructions and other variables. As well as comparing the information at natural fibers applications data from economics sources and material employment at the footwear international market. The methodology was based in literature research and interviews with Brazilian companies. The employment of natural fibers in footwear corresponds to a small part in comparison of synthetic fibers. Cellulosic fibers have been researched to reinforce rubbers and they are applied to sole as snow footwear. In addition, these fibers are being researched as biodegradable materials, showing innovations for instance, the use of leather waste, coconut fiber and latex, multilayers fabrics and finishing process adding bactericide properties to cotton. Brazilian footwear industry is finding solutions to reduce production costs in order to compete in the international market. One of the strategies is the gradual replacement of leather by fabrics, synthetic polymers and rubbers. The interviews identified the employment of cotton, raffia and jute fabrics especially in footwear summer collections. Thus, the increasing of researches about recycling footwear components and the development of biodegradable materials points a sustainability trend in this sector.

show abstract

“…In this process, selecting geometry, relative motion, and imposed loads (contact pressure) are the most important for proper simulation of wear conditions [4]. Usually, for sliding contacts three types of geometry are While maintaining the high stiffness-to-weight and high specific strengths found in synthetic fiber-reinforced composite materials (SFRCs), NFRCs also have the beneficial properties of non-abrasiveness, low material cost, recyclability, biodegradability, and CO 2 neutrality [13][14][15][16]. However, some types of natural fibers as reinforcement have certain drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Tribology of Natural Fibers Composite Materials: An Overview

2020

View full text Add to dashboard Cite

In the framework of green materials, in recent years, natural fiber composites attracted great attention of academia and industry. Their mechanical and tribological characteristics, such as high strength, elasticity, friction, and wear resistance, make them suitable for a wide range of industrial applications in which issues regarding a large amount of disposal are to be considered since their environmental friendliness gives them an advantage over conventional synthetic materials. Based on the recent and relevant investigations found in the scientific literature, an overview focused on the tribological characteristics of composite materials reinforced with different types of natural fibers is presented. The aim is to introduce the reader to the issues, exploring the actual knowledge of the friction and wear characteristics of the composites under the influence of different operating parameters, as well as the chemical treatment of fibers. The main experimental tribological techniques and the main used apparatus are also discussed, with the aim of highlighting the most appropriate future research directions to achieve a complete framework on the tribological behavior of many possible natural fiber composite materials.

show abstract

Review on mechanical properties of natural fiber composites.

Cited by 221 publications

References 11 publications

Influência de fatores ambientais nas propriedades mecânicas de biocompósitos de pla reforçado com fibra de coco e borra de café

Influência de fatores ambientais nas propriedades mecânicas de biocompósitos de pla reforçado com fibra de coco e borra de café

Panorama of natural fibers applied in Brazilian footwear: materials and market

Tribology of Natural Fibers Composite Materials: An Overview

Contact Info

Product

Resources

About