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.

A review of the green chemistry approaches to leather tanning in imparting sustainable leather manufacturing

“…Water-soluble soybean polysaccharide dialdehyde (SPDA) prepared by oxidation of soybean polysaccharides as a tanning agent applied to leather resulted in improved mechanical properties and hydrothermal shrinkage temperature of 79.0 °C. 139 The leather produced by tanning with 40.0 g kg −1 Al-m-CCA + 40.0 g kg −1 ZrS, and 40.0 g kg −1 Al-m-MCA + 20.0 g kg −1 ZrS (in terms of ZrO 2 ) increased the shrinkage temperature to 83.5 °C, 144 and 85.5 °C, 145 respectively. The water usage was 2 l kg −1 without the fatliquoring treatment, and the tensile strength exhibited by the processed leather was quite poor.…”

“…Tanning by crosslinking with polymers having aldehyde groups. The studied aldehyde polymers may include soybean polysaccharide dialdehyde (SPDA), 139 carboxymethyl cellulose dialdehyde (CMC-D), 140 waste paper cellulose dialdehyde (WPCD), 141 biomass-derived CMC-D alone and with low molecular weight chitosan (LMC-III with a molecular weight of 5148 g mol −1 ), 142 tara gum dialdehyde (TGD), 143 sodium alginate dialdehyde (SAD), 143 cyclodextrin dialdehyde, 143 and starch dialdehyde, 3 Al-masked corn cob hemicellulose aldehyde (Al-m-CCA), 144 Al-masked microcrystalline cellulose aldehyde (Al-m-MCA). 145 The other similar tanning agents studied are Zr-masked hemicellulose dialdehyde (Zr-m-HCD), 146 sugarcane bagasse cellulose dialdehyde (SBCD), 147 ethylene glycol glycidyl ether grafted corn starch dialdehyde (CSD-g-EGDE), 148 epichlorohydrin-modified hydroxyl-terminated hyperbranched poly-(amine-ester) or EH-PAE-OH, 71 a copolymer of polyhedral oligomeric silsesquioxane and methacrylic acid/aluminium sulphate or P(POSS-MAA)-AS, 37 polyethylene glycol triazine (TA-D-PEG), 149 and corn starch dialdehyde (CSD).…”

Biomass derived oligosaccharides for potential leather tanning

“…Considering the polyhydroxy structures of oligosaccharides, aldehyde group-rich oligosaccharide derivatives can be produced through oxidization. Once these species are synthesized, a robust crosslinking network is weaved via forming multisite Schiff base structures between the aldehyde group in the oligosaccharides and the amino group in the collagen fibers [4,5]. For example, biomass-derived aldehyde (BDA) tanning agents were prepared through periodate oxidation of sodium carboxymethyl cellulose (CMC) and sugarcane bagasse, in which the C2-C3 bond of the glucose unit was selectively cleaved to form 2,3-dialdehyde CMC [6,7].…”

Novel Biomass-Based Polymeric Dyes: Preparation and Performance Assessment in the Dyeing of Biomass-Derived Aldehyde-Tanned Leather

“…Among the emerging CFTAs, biomass-derived aldehyde tanning agents (BATs), mainly prepared from saccharide-based biomass via periodate oxidation of the structural unit containing vicinal diols, have recently attracted much attention [ 11 , 12 ]. Such an interest is accounted for by its sustainability, low toxicity, biodegradability, and favorable tanning effects [ 13 , 14 , 15 , 16 ].…”