Issue 12, 2022

Optimization of dialdehyde soluble soybean polysaccharide: preparation by response surface methodology for cleaner leather tanning

Abstract

Leather is widely used in daily necessities, such as shoes and bags. Traditional chrome tanning might produce leathers with excellent mechanical and thermal properties but gives rise to problems, such as environmental pollution. To find an ecological alternative for chrome-tanning agents, soluble soybean polysaccharide (SSPS) was oxidized by sodium periodate to yield dialdehyde soluble soybean polysaccharide (DPA). By the response surface methodology (RSM)-based optimization of the preparation process, DPA was obtained at the optimized condition at the mass ratio of 1 : 1.9, oxidation time of 0.53 h, and oxidation temperature of 20 °C, and the hydrothermal shrinkage temperature of the DPA-tanned leather reached 79 °C. The Fourier transform infrared (FT-IR) spectra and gel permeation chromatography (GPC) showed that the aldehyde group was successfully introduced, and the molecular weight was significantly reduced. The DPA-tanned leather has good collagen fiber dispersion and mechanical properties and thus is suggested to be a green tanning agent for leather making.

Graphical abstract: Optimization of dialdehyde soluble soybean polysaccharide: preparation by response surface methodology for cleaner leather tanning

Supplementary files

Article information

Article type
Paper
Submitted
12 Jan 2022
Accepted
14 Feb 2022
First published
07 Mar 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 7506-7515

Optimization of dialdehyde soluble soybean polysaccharide: preparation by response surface methodology for cleaner leather tanning

H. Zhu, H. Liu, K. Tang, J. Liu, X. Zheng, Y. Pei and J. Zhong, RSC Adv., 2022, 12, 7506 DOI: 10.1039/D2RA00222A

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