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Journal ArticleDOI

Biocomposites reinforced with natural fibers: 2000–2010

TL;DR: A comprehensive review of literature on bio-fiber reinforced composites is presented in this paper, where the overall characteristics of reinforcing fibers used in biocomposites, including source, type, structure, composition, as well as mechanical properties, are reviewed.
About: This article is published in Progress in Polymer Science.The article was published on 2012-11-01. It has received 3074 citations till now. The article focuses on the topics: Biocomposite & Transfer molding.
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TL;DR: Lignin is one of the three major components found in the cell walls of natural lignocellulosic materials and is widely available as a major byproduct of a number of industries involved in retrieving the polysaccharide components of plants for industrial applications, such as in paper making, ethanol production from biomass, etc.
Abstract: Rising environmental concerns and depletion of petro-chemical resources has resulted in an increased interest in biorenewable polymer-based environmentally friendly materials. Among biorenewable polymers, lignin is the second most abundant and fascinating natural polymer next to cellulose. Lignin is one of the three major components found in the cell walls of natural lignocellulosic materials. Lignin is widely available as a major byproduct of a number of industries involved in retrieving the polysaccharide components of plants for industrial applications, such as in paper making, ethanol production from biomass, etc. The impressive properties of lignin, such as its high abundance, low weight, environmentally friendliness and its antioxidant, antimicrobial, and biodegradable nature, along with its CO2 neutrality and reinforcing capability, make it an ideal candidate for the development of novel polymer composite materials. Considerable efforts are now being made to effectively utilize waste lignin as one ...

1,065 citations

Journal ArticleDOI
TL;DR: A comprehensive review of the most appropriate and widely used natural fiber reinforced polymer composites (NFPCs) and their applications is presented in this paper. But, the results of the review are limited due to the high water absorption, inferior fire resistance, and lower mechanical properties of NFPCs.
Abstract: Natural fibers are getting attention from researchers and academician to utilize in polymer composites due to their ecofriendly nature and sustainability. The aim of this review article is to provide a comprehensive review of the foremost appropriate as well as widely used natural fiber reinforced polymer composites (NFPCs) and their applications. In addition, it presents summary of various surface treatments applied to natural fibers and their effect on NFPCs properties. The properties of NFPCs vary with fiber type and fiber source as well as fiber structure. The effects of various chemical treatments on the mechanical and thermal properties of natural fibers reinforcements thermosetting and thermoplastics composites were studied. A number of drawbacks of NFPCs like higher water absorption, inferior fire resistance, and lower mechanical properties limited its applications. Impacts of chemical treatment on the water absorption, tribology, viscoelastic behavior, relaxation behavior, energy absorption flames retardancy, and biodegradability properties of NFPCs were also highlighted. The applications of NFPCs in automobile and construction industry and other applications are demonstrated. It concluded that chemical treatment of the natural fiber improved adhesion between the fiber surface and the polymer matrix which ultimately enhanced physicomechanical and thermochemical properties of the NFPCs.

1,022 citations


Cites background from "Biocomposites reinforced with natur..."

  • ...This structure gives to thermoset polymer good properties such as high flexibility for tailoring desired ultimate properties, great strength, and modulus [3, 4]....

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  • ...At 65% humidity at 21C, the equilibrium moisture content of some natural fiber can be observed in Table 4 [4]....

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  • ...The plants, which produce cellulose fibers can be classified into bast fibers (jute, flax, ramie, hemp, and kenaf), seed fibers (cotton, coir, and kapok), leaf fibers (sisal, pineapple, and abaca), grass and reed fibers (rice, corn, and wheat), and core fibers (hemp, kenaf, and jute) as well as all other kinds (wood and roots) [4]....

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  • ...Table 1: Natural fibers in the world and their world production [4]....

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  • ...Table 2: Chemical composition of some common natural fibers [4]....

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Journal ArticleDOI
TL;DR: In this paper, a brief outline of work that covers in the area of biocomposites, major class of biodegradable polymers, natural fibres, as well as their manufacturing techniques and properties has been highlighted.
Abstract: The growing ecological and environmental consciousness has driven efforts for development of new innovative materials for various end-use applications. Polymers synthesized from natural resources, have gained considerable research interest in the recent years. This review paper is intended to provide a brief outline of work that covers in the area of biocomposites, major class of biodegradable polymers, natural fibres, as well as their manufacturing techniques and properties has been highlighted. Various surface modification methods were incorporated to improve the fibre–matrix adhesion resulting in the enhancement of mechanical properties of the biocomposites. Moreover, an economical impact and future direction of these materials has been critically reviewed. This review concludes that the biocomposites form one of the emerging areas in polymer science that gain attention for use in various applications ranging from automobile to the building industries.

894 citations

Journal ArticleDOI
TL;DR: The prime aim of this review article is to demonstrate the recent development and emerging applications of natural cellulose fibers and their polymer materials.

775 citations

Journal ArticleDOI
TL;DR: It is evident from the literature survey presented herein that modified cellulose-based adsorbents exhibit good potential for the removal of various aquatic pollutants, however, still there is a need to find out the practical utility of these adsorbent on a commercial scale, leading to the improvement of pollution control.

747 citations


Additional excerpts

  • ...4 glycosidic linkages (Faruk et al., 2012; Henriksson and Berglund, 2007; O'Connell et al., 2008) (Fig....

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References
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TL;DR: In this paper, the authors explored how various surface treatments would change the dispersion component of surface energy and acid-base character of hemp nanofibers, using inverse gas chromatography (IGC), and investigated the effect of the incorporation of these modified nanofibrers into a biopolymer matrix on the properties of their nano-composites.
Abstract: The aim of this work was to explore how various surface treatments would change the dispersion component of surface energy and acid-base character of hemp nanofibers, using inverse gas chromatography (IGC), and to investigate the effect of the incorporation of these modified nanofibers into a biopolymer matrix on the properties of their nano-composites. Bio-nanocomposite materials were prepared from poly (lactic acid) (PLA) and polyhydroxybutyrate (PHB) as the matrix, and the cellulose nanofibers extracted from hemp fiber by chemo-mechanical treatments. Cellulose fibrils have a high density of –OH groups on the surface, which have a tendency to form hydrogen bonds with adjacent fibrils, reducing interaction with the surrounding matrix. It is necessary to reduce the entanglement of the fibrils and improve their dispersion in the matrix by surface modification of fibers without deteriorating their reinforcing capability. The IGC results indicated that styrene maleic anhydride coated and ethylene-acrylic acid coated fibers improved their potential to interact with both acidic and basic resins. From transmission electron microscopy (TEM), it was shown that the nanofibers were partially dispersed in the polymer matrix. The mechanical properties of the nanocomposites were lower than those predicted by theoretical calculations for both nanofiber-reinforced biopolymers.

68 citations


"Biocomposites reinforced with natur..." refers background in this paper

  • ...In the literature there are reports of cellulose nano/microfibril extraction from diverse non-wood sources including hemp fibers [481,482], sugar beet pulp [483,484], potato pulp [485], swede root [486], bagasse [487–491], sisal [492,493], algae [494], stems of cacti [495,496], banana rachis [497], flax fibers [498,499], plantain [500], water hyacinth [501], bamboo [502], coir [503], pea hull [504], pineapple leaf [505], and wheat straw [506]....

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Journal ArticleDOI
TL;DR: In this paper, the authors presented how bio-fiber composites (biocomposites) can be used for structural applications by enhancing their performance through hybridization and cellular structural forms.
Abstract: This paper presents how biofiber composites (biocomposites) can be used for structural applications by enhancing their performance through hybridization and cellular structural forms. Cellular biocomposite cores made from industrial hemp or flax fibers with unsaturated polyester were hybridized with woven jute, chopped glass, and unidirectional carbon fabrics. Material characterization showed improved stiffness, strength, and moisture-absorption stability, while flexural tests on laboratory-scale plates demonstrated enhanced structural behavior. Micromechanics and sandwich analyses adequately captured material and structural response and the benefit from residual stresses was evaluated. Results indicate that hybrid cellular biofiber-based composites provide an economic and environmentally friendlier alternative to entry-level synthetic composites.

67 citations

Journal ArticleDOI
TL;DR: In this article, the effect of the thermomolding temperature on the pressure sensitive adhesives properties of gluten-based matrix was evaluated by the measurement of their rheological properties (elastic and viscous modulus) at various frequencies.
Abstract: Wheat gluten-based materials reinforced with hemp fiber were prepared at different thermomolding temperature, and their mechanical properties were characterized. Reinforcement, calculated as the ratio between the composite Young’s modulus and the matrix Young’s modulus was shown to decrease when the thermomolding temperature increased from 100 to 130 °C. However, the feature cannot be explained neither by a matrix deplasticization nor a variation in the extent of gluten cross-linking. The effect of the thermomolding temperature on the pressure sensitive adhesives properties of gluten-based matrix was evaluated by the measurement of their rheological properties (elastic and viscous modulus) at various frequencies. Results confirmed that the better adhesives properties were obtained at lower temperature, suggesting that this parameter affects the reinforcement.

67 citations


"Biocomposites reinforced with natur..." refers background in this paper

  • ...[46,47] studied the feasibility of wheat gluten as a matrix for hemp fiber reinforced composites regarding their thermal treatment and plasticization effect on the mechanical properties....

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Journal ArticleDOI
TL;DR: A carbon/silica composite designed for use under compressive loads was fabricated from rice husk, an agricultural waste material, by using a planetary ball mill, then carbonized and molded into the precursor by means of hot-pressing without using any binders.

67 citations


"Biocomposites reinforced with natur..." refers background in this paper

  • ...Other studies have focused on: flame retardant properties of rice husk/PE composites [148], the using of rice husk as filler for rice husk/PP composites [149], the thermogravimetric analysis of rice husk filled HDPE and PP composites [150], the enhancement of the processability of rice husk/HDPE composites [151], the effect of the percentage of rice husk content, hydroxyl groups and size on the flexural, tensile, and impact properties of rice husk/polyurethane composites [152], nonlinear viscoelastic creep characterization of HDPE-rice husk composites [153], the effect of the rice husk size and composition on the injection molding processability of rice husk/PE composites [154], photocatalytic performance of a carbon/TiO2 composite with rice husk [155], the effect of different concentrations and sizes of particles of rice husk ash-in the mechanical properties of rice husk/PP composites [156], the effect of different coupling agent on rice husk/copolymer PP composites [157], dimensional properties of rice husk/unsaturated polyester composites [158], and carbon/silica composites fabricated from rice husk by means of binder-less hot-pressing [159]....

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Journal ArticleDOI
TL;DR: In this article, the effect of bi-dimensional orientation of leaf stalk fibers from peach palm in impact, tensile strength behavior and water absorption profile of polyester/fiber reinforced composites was investigated.

66 citations