Polylactic Acid (PLA) Biocomposites Filled with Waste Leather Buff (WLB)

Ambone, Tushar; Joseph, Seena; Deenadayalan, E.; Mishra, Satyendra; Jaisankar, Sellamuthu N.; Saravanan, P.

doi:10.1007/s10924-016-0891-3

Cited by 38 publications

(48 citation statements)

References 48 publications

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“…The main compound in BF was found to be collagen protein, as expected. Considering the previously reported values by several authors [ 8 , 17 , 34 ] for ash, protein, nitrogen, chromium oxide content and pH values within BF, the values measured in our study were well within the limits, except the content of moisture and fatty substance. In our work the fatty substance rate (7.9%) in BF was found to be significantly higher than the previously published value, which was only reported by Reference [ 34 ] as 1.97%, this might have some effect on the compatibility between HDPE and BF.…”

Section: Resultssupporting

confidence: 89%

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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: Resultssupporting

confidence: 89%

“…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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“…The bending vibration of -C-H- in CH 3 groups and the main chain of PLA were detected at 1450 cm −1 and 1380 cm −1 , respectively. These characteristics bands were also located in the literature [ 27 , 28 ]. PLA/CNF biocomposite films displayed all characteristic bands of PLA.…”

Section: Resultsmentioning

confidence: 64%

Structure and Properties of Polylactic Acid Biocomposite Films Reinforced with Cellulose Nanofibrils

Wang

Sun

et al. 2020

Molecules

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Polylactic acid (PLA) is one of the most promising biodegradable and recyclable thermoplastic biopolymer derived from renewable feedstock. Nanocellulose reinforced PLA biocomposites have received increasing attention in academic and industrial communities. In the present study, cellulose nanofibrils (CNFs) was liberated by combined enzymatic pretreatment and high-pressure homogenization, and then subsequently incorporated into the PLA matrix to synthesize PLA/CNF biocomposite films via solution casting and melt compression. The prepared PLA/CNF biocomposite films were characterized in terms of transparency (UV-Vis spectroscopy), chemical structure (attenuated total reflectance-Fourier transform infrared, ATR-FTIR; X-ray powder diffraction, XRD), thermal (thermogravimetric analyzer, TGA; differential scanning calorimetry, DSC), and tensile properties. With 1.0–5.0 wt % additions of CNF to the PLA matrix, noticeable improvements in thermal and physical properties were observed for the resulting PLA/CNF biocomposites. The 2.5 wt % addition of CNF increased the tensile strength by 8.8%. The Tonset (initial degradation temperature) and Tmax (maximum degradation temperature) after adding 5.0 wt % CNF was increased by 20 °C, and 10 °C, respectively in the nitrogen atmosphere. These improvements were attributed to the good dispersibility and improved interfacial interaction of CNF in the PLA matrix.

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“…Accordingly, with the existence of WLF in the composite, these bonds that mainly are fibers–fibers and fibers–rubber linking also augment, respectively, because of the rise of total linking. However, the further increasing WLF content (>50 wt% ) leads to the aggregation of leather bundles formed by fiber–fiber bonding, which is the weakness of the composite under the application of external force [ 21 ]. With the presence of leather, unlike the trending of tension, the elongation at break decreased dramatically from 357.2% of raw NBR to 28.4% of the composite with the highest content of WLF.…”

Section: Resultsmentioning

confidence: 99%

“…In the research on the incorporation of leather fibers with different rubbers, I. Shabani et al concluded that the compatibility of leather fibers with polar rubber is higher than that with nonpolar rubber [ 19 ]. Although many studies have been reported about the incorporation of waste leather fiber (WLF) with different kinds of rubber matrix [ 10 , 12 , 17 , 19 ], and plastic [ 21 , 22 , 23 ] as well, the research of using a higher amount of waste leather in the composite has been rarely published.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Leather Waste Fibers in Polymer Matrix Composites Based on Acrylonitrile-Butadiene Rubber

et al. 2020

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In this study, we present the fabrication of nitrile butadiene rubber/waste leather fiber (NBR/WLF) composites with different weight percentages of WLF and NBR (0/100, 20/80, 30/70, 40/60, 50/50, 60/40 wt/wt). WLF was prepared by cutting the scrap leathers from the waste product of the Vietnamese leather industry. Subsequently, in order to make the short fibers, it was mixed by a hammer mill. The characteristics of WLF/NBR composites such as mechanical properties (tensile strength, tear strength, hardness), dynamic mechanical properties, toluene absorption, and morphology were carefully evaluated. As a result, the tensile strength and tear strength become larger with increasing WLF content from 0 to 50 wt% and they decrease when further increasing WLF content. The highest tensile strength of 12.5 MPa and tear strength of 72.47 N/mm were achieved with the WLF/NBR ratio of 50/50 wt%. Both hardness and resistance of the developed materials with toluene increased with increasing WLF content. The SEM results showed a good adhesion of NBR matrix and the WLF. The increasing of storage modulus (E’) in comparison with raw NBR showed good compatibility between WLF and NBR matrix. This research showed that the recycled material from waste leather and NBR was successfully prepared and has great potential for manufacturing products such as floor covering courts and playgrounds, etc.

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Polylactic Acid (PLA) Biocomposites Filled with Waste Leather Buff (WLB)

Cited by 38 publications

References 48 publications

Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

Structure and Properties of Polylactic Acid Biocomposite Films Reinforced with Cellulose Nanofibrils

Utilization of Leather Waste Fibers in Polymer Matrix Composites Based on Acrylonitrile-Butadiene Rubber

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