Composites Produced from Natural Rubber and Chrome-Tanned Leather Wastes: Evaluation of their In Vitro Toxicological Effects for Application in Footwear and Textile Industries

Cavalcante, Dalita Gomes Silva Morais; Gomes, Andressa Silva; Santos, Renivaldo José dos; Kerche, Leandra Ernst; Danna, Caroline Silva; Yoshihara, Eidi; Job, Aldo Eloízo

doi:10.1007/s10924-017-1002-9

Cited by 18 publications

(15 citation statements)

References 40 publications

(41 reference statements)

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“…and fewer refer to BF. In the case of BF, its use together with rubber [ 15 , 16 ], polylactic acid [ 17 ], polycaprolactone [ 8 ], polystyrene [ 18 ] or epoxy-polymers [ 19 ] is described, usually to prepare low cost leather like materials suitable as footwear, clothing or construction.…”

Section: Introductionmentioning

confidence: 99%

Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

et al. 2020

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Leather buffing dust (BF) is a waste from tannery which is usually disposed on landfills. The interest in using wastes as fillers or reinforcements for composites has raised recently due to environmental concerns. This study investigates the potential use of BF waste as filler for a high density polyethylene matrix (HDPE). A series of HDPE-BF composites, containing filler concentrations ranging from 20 to 50wt%, were formulated, injection molded and tested. The effect of filler contents on the mechanical properties of the composites were evaluated and discussed. Composites with BF contents up to 30wt% improved the tensile strength and Young’s modulus of the matrix, achieving similar mechanical properties to polypropylene (PP). In the case of flexural strength, it was found to be proportionally enhanced by increasing reinforcement content, maintaining high impact strength. These composites present great opportunities for PP application areas that require higher impact resistance. The materials were submitted to a series of closed-loop recycling cycles in order to assess their recyclability, being able to maintain better tensile strength than virgin HDPE after 5 cycles. The study develops new low-cost and sustainable composites by using a waste as composite filler.

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Section: Introductionmentioning

confidence: 99%

Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

et al. 2020

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“…[4][5][6][7] One of the polymeric materials that has gained attention as matrix for the incorporation of leather wastes is NR, due to the feasibility to incorporate leather wastes in NR matrices, seeking to obtain composites with some interesting properties. 3,4,[8][9][10] Given leather wastes have an internal crosslinking between collagen and chromium ions, their incorporation to polymeric matrixes can be carried out with or without a previous chemical treatment of leather wastes, which can change the properties of the final product significantly. 4 These treatments usually influence the vulcanization parameters of leather wastes/rubber composites, but they can also facilitate rubber mixing process because the treated leather wastes act as process aids and improve incorporation of the other fillers in the formulation, as widely reported with scrap rubber/ leather wastes/NR composites.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and rheometric properties of natural rubber composites filled with untreated and chemically treated leather wastes

Yepes

Cardona

Restrepo

et al. 2018

Journal of Composite Materials

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In this work, the effect of the incorporation of leather wastes from chrome tanning on the mechanical and rheometric properties of natural rubber-based composite was evaluated. Chrome content in leather wastes diminished as a result of a chemical treatment with a sodium bicarbonate solution. The treatment also improved the tensile properties of composites with 0, 20 and 40 parts per hundred rubber of leather wastes with particle size between 590 and 840 µm. In a second stage of the experimental work, 0, 20, 40, 60, 80 and 100 parts per hundred rubber of chemically treated leather wastes with particle size between 297 and 590 µm were incorporated to the same natural rubber compound studied in the first part of this study. All the composites were prepared in a torque rheometer, seeking to determine their rheological behaviour during mixing. Rheometric properties of all the composites during curing were monitored in a moving die rheometer. Tensile properties, tear strength, hardness, compressive modulus, compression-set, abrasive wear resistance and De Mattia flexing fatigue resistance for composites obtained in the second experimental set of this work were evaluated. It was found that leather wastes improved the hardness, stiffness, tear strength and abrasive wear resistance on the composites. However, elongation at break, flexural fatigue and tensile strength diminished when a large quantity of wastes was incorporated.

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“…Based on its characteristics of ne particle size structure, a large number of polar groups and low odor, the development of new ller using BD for synthetic leather has a bright application prospect. Unfortunately, there are only reports on the use of skin powders as llers, 10,11 and the research on the leather buffing dust is relatively less. In addition, aer tanning, dyeing, fatliquoring and other processes of leather-making, the -COOH, -NH 2 and other active groups on the leather combine with these chemicals, resulting in the reduction of the number of active groups.…”

Section: Introductionmentioning

confidence: 99%

Novel bio-based filler: hyperbranched polymer modified leather buffing dust and its influence on the porous structure and mechanical properties of polyurethane film

Liu

Zhang

et al. 2021

RSC Adv.

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Composites Produced from Natural Rubber and Chrome-Tanned Leather Wastes: Evaluation of their In Vitro Toxicological Effects for Application in Footwear and Textile Industries

Abstract: necessarily the chromium contained in these residues influences the toxicity and genotoxicity of this new material.

Cited by 18 publications

References 40 publications

Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

Mechanical and rheometric properties of natural rubber composites filled with untreated and chemically treated leather wastes

Novel bio-based filler: hyperbranched polymer modified leather buffing dust and its influence on the porous structure and mechanical properties of polyurethane film

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