Utilization of Collagen Wastes as Bioretanning Agent and Effects on the Mechanical Properties of Leather

Year 2023, Volume: 33 Issue: 4, 330 - 336, 31.12.2023

Aykut Sancaklı , Bahri Başaran Fatih Arıcan , Ezgi İşmar , Oğuzhan Polat , Al Mizan

https://doi.org/10.32710/tekstilvekonfeksiyon.1066721

Abstract

A bioretanning agent was developed as an alternative to conventional synthetic retanning agents to pave the way for sustainability in the leather industry. Tanned solid waste shavings obtained from leather processing was utilized to produce a proteinic sub-structure for constitution building block of the bioretanning agent's backbone. The protein hydrolyzates were acquired with different molecular weights and the hybrid biopolymers were obtained by grafting the hydrolyzates with acrylic acids (AAc) and acrylamides (AAm). To evaluate the properties imparted by the designed bioretanning agent, it was incorporated into the leather in the retanning processes and compared to the control samples fabricated with conventional procedures. Penetration of hybrid biopolymer into the matrix for retanning was achieved easily, and using low and high molecular weight biopolymers have been recorded by 20% and 23% of improvement on the mechanical performance of the leather samples, respectively. The ratio of the hydrolyzate and AAm/AAc was found to be fitted at 1:2 for both. Furthermore, as per the evaluation of the leathers retanned by novel biopolymer, the results were promising in terms of technical viability and revealed that the biopolymer usage could enhance the mechanical performance of the leather while benefiting from the waste-to-wealth approach.

Keywords

Leather, Collagen, Chrome shaving, Hybrid polymer, Bioretanning Agent

Supporting Institution

TUBITAK-TEYDEB

Project Number

3191635

Thanks

We thank TUBITAK-TEYDEB for support with project number <3191635>.

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