Biocomposites from Starch-based Biopolymer and Rape Fibers. Part II: Stiffening, Flexural and Impact Strength, and Product Development

Espigulé, Eva; Vilaseca, Fabiola; Puigvert, Xavier; Espinach, Francesc X.; Julián, Fernando; Mansouri, Nour-Eddine El; Mutjé, Pere

doi:10.2174/13852728113179990074

Cited by 6 publications

(5 citation statements)

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“…In the case of materials filled with rigid particles, the differences between both strengths are noticeable [65]. The results obtained with BioPE-filled CaCO 3 are similar to those obtained for uncoupled lignocellulosic fiber-filled polyolefin [66].…”

Section: Mechanical Characterization Of the Compositessupporting

confidence: 75%

Characterization of CaCO3 Filled Poly(lactic) Acid and Bio Polyethylene Materials for Building Applications

et al. 2021

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Noise pollution has been identified as a cause of a broad spectrum of diseases, motivating researchers to identify building materials capable of attenuating this pollution. The most common solution is the use of gypsum boards, which show a good response for low frequencies but have a poorer response for high frequencies. In addition, due to environmental concerns associated with buildings, the use of materials that minimize environmental impacts must be favored. In this research, two biopolymers, a poly(lactic) acid and a bio-polyethylene, were filled with two typologies of calcium carbonate, and their soundproofing properties were tested using impedance tubes. In addition, the morphology of the fillers was characterized, and here we discuss its impact on the mechanical properties of the composites. The results showed that the incorporation of calcium carbonate into bio-based thermoplastic materials can represent a strong alternative to gypsum, because their mechanical properties and sound barrier performance are superior. In addition, the inclusion of mineral fillers in thermoplastic materials has a positive impact on production costs, in addition to preserving the advantages of thermoplastics in terms of processing and recycling. Although the use of carbonate calcium decreases the mechanical properties of the materials, it enables the production of materials with insulation that is four-fold higher than that of gypsum. This demonstrates the potential of these materials as building lightweight solutions.

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Section: Mechanical Characterization Of the Compositessupporting

confidence: 75%

Characterization of CaCO3 Filled Poly(lactic) Acid and Bio Polyethylene Materials for Building Applications

et al. 2021

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“…The increases of the flexural strength of the composites with the addition of 20 to 60% w / w SGW, compared to the matrix, were 37.5%, 71.7%, 93.7%, 131.5%, and 156.7%, respectively. It is reported in the literature that such linear behavior is indicative of an optimal interface between the fibers and the matrix as well as a good dispersion of the reinforcements in the matrix [ 3 , 45 , 46 ]. When the tensile strength of the same composites was investigated, a maximum tensile strength was found for 50% w / w SGW content, and further increases of the reinforcement content produced a noticeable decrease in this property [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

“…Flexural strength and strain are of great interest in the design and product development fields [ 1 , 2 , 3 , 4 , 5 ]. In short-fiber-reinforced composite materials, the in-depth study of these properties is relevant to the different fiber orientations in the skin, the shell, and the core of injected specimens regarding the load axis [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Towards More Sustainable Material Formulations: A Comparative Assessment of PA11-SGW Flexural Performance versus Oil-Based Composites

et al. 2018

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Abstract:The replacement of commodity polyolefin, reinforced with glass fiber (GF), by greener alternatives has been a topic of research in recent years. Cellulose fibers have shown, under certain conditions, enough tensile capacities to replace GF, achieving competitive mechanical properties. However, if the objective is the production of environmentally friendlier composites, it is necessary to replace oil-derived polymer matrices by bio-based or biodegradable ones, depending on the application. Polyamide 11 (PA11) is a totally bio-based polyamide that can be reinforced with cellulosic fibers. Composites based on this polymer have demonstrated enough tensile strength, as well as stiffness, to replace GF-reinforced polypropylene (PP). However, flexural properties are of high interest for engineering applications. Due to the specific character of short-fiber-reinforced composites, significant differences are expected between the tensile and flexural properties. These differences encourage the study of the flexural properties of a material prior to the design or development of a new product. Despite the importance of the flexural strength, there are few works devoted to its study in the case of PA11-based composites. In this work, an in-depth study of the flexural strength of PA11 composites, reinforced with Stoneground wood (SGW) from softwood, is presented. Additionally, the results are compared with those of PP-based composites. The results showed that the SGW fibers had lower strengthening capacity reinforcing PA11 than PP. Moreover, the flexural strength of PA11-SGW composites was similar to that of PP-GF composites.

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“…The tensile, flexural, and impact characterization of the composites prepared has been reported elsewhere. (Espigule et al 2013b) …”

Section: Composite Preparationmentioning

confidence: 99%

“…As a result, thanks to their high mechanical properties, low density, and ecofriendly character, rape stalk fibers (RSF) can be effectively used as filler/reinforcement for injection-moldable polymers. (Espigule et al 2013a;Espigule et al 2013b) In this work, a commercially available thermoplastic starch was reinforced with up to 40% wt. rape stalk fibers.…”

Section: Introductionmentioning

confidence: 99%

Thermoplastic Starch-based Composites Reinforced with Rape Fibers: Water Uptake and Thermomechanical Properties

et al. 2013

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Fully biodegradable composite materials were obtained through reinforcement of a commercially available thermoplastic starch (TPS) matrix with rapeseed fibers (RSF). The influence of reinforcement content on the water sorption capacity, as well as thermal and thermomechanical properties of composites were evaluated. Even though the hydrophilic character of natural fibers tends to favor the absorption of water, results demonstrated that the incorporation of RSF did not have a significant effect on the water uptake of the composites. DSC experiments showed that fibers restricted the mobility of the starch macromolecules from the TPS matrix, hence reducing their capacity to crystallize. The viscoelastic behaviour of TPS was also affected, and reinforced materials presented lower viscous deformation and recovery capacity. In addition, the elasticity of materials was considerably diminished when increasing fiber content, as evidenced in the TMA and DMTA measurements.

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Biocomposites from Starch-based Biopolymer and Rape Fibers. Part II: Stiffening, Flexural and Impact Strength, and Product Development

Cited by 6 publications

References 0 publications

Characterization of CaCO3 Filled Poly(lactic) Acid and Bio Polyethylene Materials for Building Applications

Characterization of CaCO3 Filled Poly(lactic) Acid and Bio Polyethylene Materials for Building Applications

Towards More Sustainable Material Formulations: A Comparative Assessment of PA11-SGW Flexural Performance versus Oil-Based Composites

Thermoplastic Starch-based Composites Reinforced with Rape Fibers: Water Uptake and Thermomechanical Properties

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