Estimation of the interfacial shears strength, orientation factor and mean equivalent intrinsic tensile strength in old newspaper fiber/polypropylene composites

Serrano, Ana; Espinach, Francesc X.; Julián, Fernando; Tormos, Romina del Rey; Méndez, José Alberto; Mutjé, Pere

doi:10.1016/j.compositesb.2013.02.018

Cited by 68 publications

(70 citation statements)

References 40 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…, where X, Y, and Z represent respectively the contributions of subcritical fibers, supercritical fibers, and the matrix to the composite's strength (Vallejos et al 2012;Serrano et al 2013). From this model, the orientation factor can be calculated as: The values of the orientation angle were quite close to the assumed 0.3 value.…”

Section: Micro-mechanicsmentioning

confidence: 92%

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

Gironès¹,

Espinach²,

Pellicer³

et al. 2013

BioResources

View full text Add to dashboard Cite

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...

show abstract

Section: Micro-mechanicsmentioning

confidence: 92%

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

Gironès¹,

Espinach²,

Pellicer³

et al. 2013

BioResources

View full text Add to dashboard Cite

show abstract

“…This is more relevant for coupled composites as the fiber is better tied to the matrix [52]. The average diameters of the fibers changed very little, so it was considered practically constant at a value of 21.6µm [8].…”

Section: Tablementioning

confidence: 99%

“…This study complements the analysis of the tensile strength of these composites carried out previously [8], and is focused on the stiffness of the composites. The moduli were analyzed from a macromechanical point of view, and their micromechanical aspects were evaluated.…”

Section: Introductionmentioning

confidence: 99%

“…Some advantages of natural fibers as opposed to other reinforcing materials are their high availability, their biodegradability, and their relative low cost and density. Newspapers usually contain a high percentage of recycled fibers from wood and mineral fillers, and therefore, used newspapers become a potential source of reinforcing fibers [7][8][9][10][11]. In spite of their advantages, the use of cellulose fibers from newspaper as reinforcement elements for thermoplastics has not been extensively investigated [7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Macro and micromechanics analysis of short fiber composites stiffness: The case of old newspaper fibers–polypropylene composites

Serrano

Espinach²,

Tresserras³

et al. 2014

Materials & Design

Self Cite

View full text Add to dashboard Cite

“…This value is within the range (6.22 to 7.18) defined by the Tresca (t m /2) and the Von Mises criteria (t m /3 1/2 ), respectively. The Von Mises value defines an upper bound for the shear forces that an interphase is able to transmit from the matrix to the fiber, and it is difficult to reach higher values (Reixach et al 2013;Serrano et al 2013). Consequently, the obtained value can be considered to have belonged to a good quality interphase.…”

Section: Micromechanical Analysismentioning

confidence: 99%

Starch-Based Biopolymer Reinforced with High Yield Fibers from Sugarcane Bagasse as a Technical and Environmentally Friendly Alternative to High Density Polyethylene

Jiménez¹,

Espinach²,

Delgado-Aguilar³

et al. 2016

BioResources

View full text Add to dashboard Cite

Greener composites, as alternatives to more common materials, should also achieve technical and economic feasibility to be commercially competitive. This study presents the results obtained from using a biodegradable starch-based matrix, and a natural fiber reinforcement coming from sugarcane bagasse, currently an agro-waste. The sugarcane bagasse biomass was treated to obtain four kinds of fibers with different morphological and chemical properties. The fibers were used to obtain composite materials, which were then tested for tensile properties. The results showed that some of the composites were suitable to replace high density polyethylene, from a technical and environmental point of view. The comparatively higher cost of the biobased matrices hinders the substitution, but the higher the fiber content, the lower the economic disadvantage. A micromechanical test and a sensitivity analysis showed that the fiber orientation had the highest impact on the tensile strength, followed by the fibers mean length and the quality of the interphase between the fibers and the matrix.

show abstract

Estimation of the interfacial shears strength, orientation factor and mean equivalent intrinsic tensile strength in old newspaper fiber/polypropylene composites

Cited by 68 publications

References 40 publications

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

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

Macro and micromechanics analysis of short fiber composites stiffness: The case of old newspaper fibers–polypropylene composites

Starch-Based Biopolymer Reinforced with High Yield Fibers from Sugarcane Bagasse as a Technical and Environmentally Friendly Alternative to High Density Polyethylene

Contact Info

Product

Resources

About