Leather Waste to Enhance Mechanical Performance of High-Density Polyethylene

Polymers

Rita Puig¹  Marc Delgado-Aguilar²  Quim Tarrés²  Eylem Kiliç³  Xavier Espinach⁴  Pere Fullana-i-Palmer⁵ 

[1] ABBU Research Group, Department of Computer Science and Industrial Engineering, Universitat de Lleida (UdL), 08700 Igualada, Spain;LEPAMAP Research Group, University of Girona, 17003 Girona, Spain;Material Science and Nanotechnology Engineering Department, Usak University, 64200 Usak, Turkey;PRODIS Research Group, University of Girona, 17003 Girona, Spain;UNESCO Chair in Life Cycle and Climate Change ESCI-UPF, Universitat Pompeu Fabra, 08003 Barcelona, Spain;

关键词: buffing dust;    HDPE;    composites;    recyclability;    circular economy;   

DOI  :  10.3390/polym12092016

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown