&amp;lt;i&amp;gt;Selection, pretreatment, and use of wheat bran for making thermoplastic composite&amp;lt;/i&amp;gt;

Rahman, Atikur; Ulven, Chad A.; Durant, Cheyenne; Johnson, Maren A; Fehrenbach, Joseph; Hossain, Khwaja

doi:10.13031/aim.201701090

Cited by 6 publications

(3 citation statements)

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“…This solution is aimed at partial replacement of plastics. A similar effect can be obtained by using bran as a filler in polymer composites, which was investigated in multiple studies [22,23]. An interesting feature of wheat bran is its composition.…”

Section: Introductionmentioning

confidence: 81%

Rotational Molding of Linear Low-Density Polyethylene Composites Filled with Wheat Bran

et al. 2020

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Application of lignocellulosic fillers in the manufacturing of wood polymer composites (WPCs) is a very popular trend of research, however it is still rarely observed in the case of rotational molding. The present study aimed to analyze the impact of wheat bran content (from 2.5 wt.% to 20 wt.%) on the performance of rotationally-molded composites based on a linear low-density polyethylene (LLDPE) matrix. Microscopic structure (scanning electron microscopy), as well as physico-mechanical (density, porosity, tensile performance, hardness, rebound resilience, dynamic mechanical analysis), rheological (oscillatory rheometry) and thermo-mechanical (Vicat softening temperature) properties of composites were investigated. Incorporation of 2.5 wt.% and 5 wt.% of wheat bran did not cause significant deterioration of the mechanical performance of the material, despite the presence of ‘pin-holes’ at the surface. Values of tensile strength and rebound resilience were maintained at a very similar level, while hardness was slightly decreased, which was associated with the porosity of the structure. Higher loadings resulted in the deterioration of mechanical performance, which was also expressed by the noticeable rise of the adhesion factor. For lower loadings of filler did not affect the rheological properties. However, composites with 10wt.% and 20 wt.% also showed behavior suitable for rotational molding. The presented results indicate that the manufacturing of thin-walled products based on wood polymer composites via rotational molding should be considered a very interesting direction of research.

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Section: Introductionmentioning

confidence: 81%

Rotational Molding of Linear Low-Density Polyethylene Composites Filled with Wheat Bran

et al. 2020

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“…The water insoluble fraction of bran consisting of cellulose (~21%), hemicellulose (~26%), and lignin (~5%) [19] can offer advantages as reinforcement material [20]. Biomass fibers derive their strength from the hydrogen bond in microfibrils and, in general, the increase in the cellulose fraction increases the strength of the fibers [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

On the Use of Biobased Waxes to Tune Thermal and Mechanical Properties of Polyhydroxyalkanoates–Bran Biocomposites

et al. 2020

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In this work, processability and mechanical performances of bio-composites based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) containing 5, 10, and 15 wt % of bran fibers, untreated and treated with natural carnauba and bee waxes were evaluated. Wheat bran, the main byproduct of flour milling, was used as filler to reduce the final cost of the PHBV-based composites and, in the same time, to find a potential valorization to this agro-food by-product, widely available at low cost. The results showed that the wheat bran powder did not act as reinforcement, but as filler for PHBV, due to an unfavorable aspect ratio of the particles and poor adhesion with the polymeric matrix, with consequent moderate loss in mechanical properties (tensile strength and elongation at break). The surface treatment of the wheat bran particles with waxes, and in particular with beeswax, was found to improve the mechanical performance in terms of tensile properties and impact resistance of the composites, enhancing the adhesion between the PHBV-based polymeric matrix and the bran fibers, as confirmed by predictive analytic models and dynamic mechanical analysis results.

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“…Different treatment methods have different effects on the fibre chemical composition. For example, NaOH treatment can increase the cellulose content in agricultural waste, such as hemp and wheat bran [29,30]. * Imported feedstock that is not locally available in the Baltic Sea region.…”

Section: Tree-free Papermentioning

confidence: 99%

Plant-Origin Feedstock Applications in Fully Green Food Packaging: The Potential for Tree-Free Paper and Plant-Origin Bio-Plastics in the Baltic Sea Region

Markevičiūtė

Varžinskas

2022

Sustainability

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Paper and plastic are the main materials used in food packaging. In the context of climate change, the importance of tree conservation and the mitigation of the negative environmental impacts caused by fossil consumption and deforestation is greater than ever before. This article reviews the potential of plant-origin feedstock from the Baltic Sea region for use in non-wood-fibre and bio-origin plastic food packaging production. It also presents a systematised literature review of the environmental impacts and applications of tree-free paper, plant-origin plastics, and natural-fibre-reinforced bio-composites in fully green food packaging. The results reveal that beneficial environmental impacts are achieved if waste or by-products are used as feedstock. While the production volumes of alternative materials in Europe are small (0.25% of paper is made of materials other than wood, and the share of bio-plastic is 0.9%), we found a large demand and potential for growth. The biggest volumes of natural fibre feedstock in Baltic Sea region countries are generated from wheat. Wheat straw, which is a by-product, has a production volume of 68.71 million tons and is potentially a significant non-wood-paper food packaging source. Agricultural waste generated from sugar beet, maize, potato, and wheat is an environmentally beneficial by-product that could be used for bio-plastic food packaging production.

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<i>Selection, pretreatment, and use of wheat bran for making thermoplastic composite</i>

Cited by 6 publications

References 0 publications

Rotational Molding of Linear Low-Density Polyethylene Composites Filled with Wheat Bran

Rotational Molding of Linear Low-Density Polyethylene Composites Filled with Wheat Bran

On the Use of Biobased Waxes to Tune Thermal and Mechanical Properties of Polyhydroxyalkanoates–Bran Biocomposites

Plant-Origin Feedstock Applications in Fully Green Food Packaging: The Potential for Tree-Free Paper and Plant-Origin Bio-Plastics in the Baltic Sea Region

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