Hemp Strands as Reinforcement of Polystyrene Composites

Vilaseca, Fabiola; López, Antonio Fernández; Llauró, X.; Pèlach, M. Àngels; Mutjé, Pere

doi:10.1205/cerd.82.11.1425.52038

Cited by 36 publications

(23 citation statements)

References 9 publications

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“…particularly problematic for composites based on conventional hydrophobic petroleumderived polymers such as polypropylene (PP), polyethylene (PE), or polystyrene (PS) [38]. Figure 3 shows a SEM of a fractured area of the composites were it could be observed a good dispersion of the fibers inside the matrix, with semi-regular fiber spacing and without the presence of fiber bundles.…”

Section: Effect Of the Fiber Content On Flexural Propertiesmentioning

confidence: 99%

Flexural properties of fully biodegradable alpha-grass fibers reinforced starch-based thermoplastics

Espinach

Delgado-Aguilar

Puig

et al. 2015

Composites Part B: Engineering

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Section: Effect Of the Fiber Content On Flexural Propertiesmentioning

confidence: 99%

Flexural properties of fully biodegradable alpha-grass fibers reinforced starch-based thermoplastics

Espinach

Delgado-Aguilar

Puig

et al. 2015

Composites Part B: Engineering

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“…This effect is particularly problematic for composites based on conventional hydrophobic petroleum-derived polymers such as polypropylene (PP), polyethylene (PE), or polystyrene (PS) (Vilaseca et al 2004). Although the treatment applied to alpha-grass was rather mild, it was expected that their inherently high alpha-cellulose content might cause some dispersion problems.…”

Section: Effect Of Alpha-fiber Content On the Tensile Properties Of Cmentioning

confidence: 99%

High-Performance-Tensile-Strength Alpha-Grass Reinforced Starch-Based Fully Biodegradable Composites

Gironès¹,

Espinach²,

Pellicer³

et al. 2013

BioResources

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aThough there has been a great deal of work concerning the development of natural fibers in reinforced starch-based composites, there is still more to be done. In general, cellulose fibers have lower strength than glass fibers; however, their specific strength is not far from that of fiberglass. In this work, alpha-fibers were obtained from alpha-grass through a mild cooking process. The fibers were used to reinforce a starch-based biopolymer. Composites including 5 to 35% (w/w) alpha-grass fibers in their formulation were prepared, tested, and subsequently compared with those of wood-and fiberglass-reinforced polypropylene (PP). The term "high-performance" refers to the tensile strength of the studied composites and is mainly due to a good interphase, a good dispersion of the fibers inside the matrix, and a good aspect ratio. The tensile strength of the composites showed a linear evolution for fiber contents up to 35% (w/w). The strain at break of the composites decreased with the fiber content and showed the stiffening effects of the reinforcement. The prepared composites showed high mechanical properties, even approaching those of glass fiber reinforced composites. Keywords INTRODUCTIONIt is commonly accepted that biopolymers and bio-fibers have the potential to replace or reduce the consumption of fossil fuel-derived plastics. In addition, to facilitate the recycling of these materials, such replacement should lead to reductions in energy consumption, pollution, and CO 2 emissions. Hence, fiber-reinforced composites are often described as eco-friendly materials. However, the mechanical properties and/or the price of such composites have rendered them inadequate for many applications to date. In general, cellulosic fibers have inferior strength compared to their synthetic counterparts, such as aramid, carbon, and glass fibers.Due to their lower density, some natural fibers have a specific strength not far from those of fiberglass. On the other hand, bio-based matrices (such as polylactic acid or polyhydroxybutyrate) remain more expensive than petroleum-derived polymers. Nevertheless, thanks to their price/performance balance, ongoing innovations are offering new commercial opportunities for bio-based polymers and their composites in several applications. PEER-REVIEWED ARTICLEbioresources.com Gironès et al. (2013). "Alpha/starch composites," BioResources 8(4), 6121-6135 6122Compared to lactones, butyrates, valerates, and other monomers used for the synthesis of biodegradable polymers, starch is an inexpensive product whose transformation into a thermoplastic polymer can be accomplished in a rather straight-forward manner (Coombs and Hall 1998;Teixeira et al. 2007;Averous and Halley 2009;Dogossy and Czigany 2011;Gandini 2011). As a result, thermoplastic starch (TPS) is considered one of the most promising biopolymers for large-scale applications. During the last few decades, TPS has received considerable attention among the scientific world (John and Thomas 2008;Belhassen et al. 2009;Cañigueral et al. 2009;Cha...

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“…A precise control of the fabrication process is determinant to obtain composites with efficient mechanical performance [5]. There is still considerable effort in this regard and a great deal of innovation to come up.…”

Section: Brief History About Mechanical Performance Of Fibre-basedmentioning

confidence: 99%

“…Physical or chemical treatments of natural fibres are also matters of concern since good adhesion properties can be achieved [7,9,10]. Some studies tend to indicate that minor or secondary improvement are rather obtained by uniquely improving interfacial properties [5].…”

Section: Brief History About Mechanical Performance Of Fibre-basedmentioning

confidence: 99%

Interfacial damage in biopolymer composites reinforced using hemp fibres: Finite element simulation and experimental investigation

Hbib

Guessasma

Bassir

et al. 2011

Composites Science and Technology

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Hemp Strands as Reinforcement of Polystyrene Composites

Cited by 36 publications

References 9 publications

Flexural properties of fully biodegradable alpha-grass fibers reinforced starch-based thermoplastics

Flexural properties of fully biodegradable alpha-grass fibers reinforced starch-based thermoplastics

High-Performance-Tensile-Strength Alpha-Grass Reinforced Starch-Based Fully Biodegradable Composites

Interfacial damage in biopolymer composites reinforced using hemp fibres: Finite element simulation and experimental investigation

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