Hybridisation effect on flexural properties of single- and double-gated injection moulded acrylonitrile butadiene styrene (ABS) filled with short glass fibres and glass beads particles

Hashemi, S.

doi:10.1007/s10853-008-2683-1

Cited by 19 publications

(25 citation statements)

References 23 publications

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“…Nonetheless, the calculus of the intrinsic flexural strength of the fibers is more confusing. In a recent work, Hashemi [ 47 ] assumed the intrinsic flexural and tensile strength to be directly correlated to the flexural and tensile strength of the composite

. However, as the same author stated, this suggestion might not necessarily suit the reality.…”

Section: Resultsmentioning

confidence: 99%

Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers

et al. 2020

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Hemp core is a lignocellulosic residue in the production chain of hemp strands. Huge amounts of hemp core are gathered annually in Europe (43,000 tons) with no major application end. Such lignocellulosic wastes have potential as filling or reinforcing material to replace synthetic fibers and wood fibers in polymer composites. In this study, hemp core biomass was treated under different NaOH concentrations and then defibrated by means of Sprout Waldron equipment to obtain single fibers. Polypropylene matrix was reinforced up to 50 wt.% and the resulting hemp core fibers and the flexural properties were investigated. The results show that the flexural strength of composites increased with the intensity of NaOH treatment. The effect of NaOH was attributed to the removal of extractives and lignin in the fiber cell wall leading to improved interfacial adhesion characteristics. Besides, a methodology was established for the estimation of the intrinsic flexural strength of hemp core fibers. The intrinsic flexural strength of hemp core fibers was calculated to be 940 MPa for fibers treated at 10 wt.% of NaOH. In addition, a relationship between the lignin content and the intrinsic strength of the fibers was established.

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. However, as the same author stated, this suggestion might not necessarily suit the reality.…”

Section: Resultsmentioning

confidence: 99%

Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers

et al. 2020

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“…The contribution of the fibers used in the strength of the composite was studied by evaluating the intrinsic flexural strength of the fibers. Other authors use the ratio between the flexural and tensile strengths of the composites instead of the ratio between fiber tensile strength factor (FTSF) and fiber flexural strength factor (FFSF) to obtain the intrinsic flexural strength of the fibers from their intrinsic tensile strength [40]. Nonetheless, in the case of semi-aligned short fiber reinforced composites, the neat contribution of the fibers to the strength of the composite is impacted by the interfacial shear strength, the fiber size of the reinforcements, and its mean orientation, as clearly shown by the modified rule of mixtures, as will be discussed later [40,41].…”

Section: Introductionmentioning

confidence: 99%

Determination of Mean Intrinsic Flexural Strength and Coupling Factor of Natural Fiber Reinforcement in Polylactic Acid Biocomposites

et al. 2019

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This paper is focused on the flexural properties of bleached kraft softwood fibers, bio-based, biodegradable, and a globally available reinforcement commonly used in papermaking, of reinforced polylactic acid (PLA) composites. The matrix, polylactic acid, is also a bio-based and biodegradable polymer. Flexural properties of composites incorporating percentages of reinforcement ranging from 15 to 30 wt % were measured and discussed. Another objective was to evaluate the strength of the interface between the matrix and the reinforcements, using the rule of mixtures to determine the coupling factor. Nonetheless, this rule of mixtures presents two unknowns, the coupling factor and the intrinsic flexural strength of the reinforcement. Hence, applying a ratio between the tensile and flexural intrinsic strengths and a defined fiber tensile and flexural strength factors, derived from the rule of mixtures is proposed. The literature lacks a precise evaluation of the intrinsic tensile strength of the reinforcements. In order to obtain such intrinsic tensile strength, we used the Kelly and Tyson modified equation as well as the solution provided by Bowyer and Bader. Finally, we were able to characterize the intrinsic flexural strengths of the fibers when used as reinforcement of polylactic acid.

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“…However, natural fibers have some disadvantages such as high moisture absorption, variability, low thermal stability, and low dimensional stability . As it is known, the mechanical properties of polymer composites such as strength and modulus are derived from a combination of filler and matrix properties, these properties being affected by some parameters such as concentration, geometrical shape, and aspect ratio of fillers .…”

Section: Introductionmentioning

confidence: 99%

Injection molded self‐hybrid composites based on polypropylene and natural fibers

et al. 2013

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Self-hybrid thermoplastic composites (combination of two fiber sizes) were obtained by injection molding using pine or agave fibers with polypropylene (PP). The effect of self-hybridization was determined through mechanical properties and water absorption for different total fiber contents between 10 and 30% wt. The results showed that impact strength (30% of fiber) and tensile modulus (20% of fiber) were improved by selfhybridization compared with composites formulated with only one fiber size. Flexural properties were not improved by self-hybridization. On the other hand, the combination of two fiber sizes had no effect on the water absorption behavior of these composites. Overall, the total fiber content was found to be an important parameter with 20% being the optimum condition where self-hybridization provides the best mechanical properties.

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Hybridisation effect on flexural properties of single- and double-gated injection moulded acrylonitrile butadiene styrene (ABS) filled with short glass fibres and glass beads particles

Cited by 19 publications

References 23 publications

Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers

Valorization of Hemp Core Residues: Impact of NaOH Treatment on the Flexural Strength of PP Composites and Intrinsic Flexural Strength of Hemp Core Fibers

Determination of Mean Intrinsic Flexural Strength and Coupling Factor of Natural Fiber Reinforcement in Polylactic Acid Biocomposites

Injection molded self‐hybrid composites based on polypropylene and natural fibers

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