A novel synergistic covalence and complexation bridging strategy based on multi-functional biomass-derived aldehydes and Al(III) for engineering high-quality eco-leather

Ding, Wei; Remón, Javier; Gao, Ming; Li, Shuolin; Liu, Haiteng; Jiang, Zhicheng; Ding, Zhiwen

doi:10.1016/j.scitotenv.2022.160713

Cited by 14 publications

(3 citation statements)

References 46 publications

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“…SEM was utilized to observe the cross sections of leather samples in order to assess the degree of collagen fiber dispersion. 45 As shown in Figure 6, the collagen fibers of PS were aggregated, resulting in a feeling of hardness when bending. After RL and LP tanning, the degree of fiber dispersion in R1 and L1 was increased.…”

Section: Structure Analysis Of Rl and Lps [Eoa]mentioning

confidence: 99%

Lignin Demethylated by Protic Ionic Liquid as a Novel and Sustainable Chrome-Free Tanning Agent for Eco-Leather Production

Luo,

Li,

Zhao

et al. 2024

ACS Sustainable Chem. Eng.

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Section: Structure Analysis Of Rl and Lps [Eoa]mentioning

confidence: 99%

Lignin Demethylated by Protic Ionic Liquid as a Novel and Sustainable Chrome-Free Tanning Agent for Eco-Leather Production

Luo,

Li,

Zhao

et al. 2024

ACS Sustainable Chem. Eng.

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“…Such an interest is accounted for by its sustainability, low toxicity, biodegradability, and favorable tanning effects [ 13 , 14 , 15 , 16 ]. Despite these auspicious features, BATs are generally non-ionic or anionic, and the –NH 2 on collagen fibers will be consumed by BATs during the tanning process, thereby resulting in a low isoelectric point (IEP) of BAT-tanned leather that will lead to poor uptake and fixation of the conventional anionic post-tanning materials (CAPMs), which are critical for the post dying stage [ 17 , 18 ]. Accordingly, the discoloration of the leather products may occur during use, which lowers their quality grade.…”

Section: Introductionmentioning

confidence: 99%

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

Ding

Remón

et al. 2023

Polymers

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High-performance chrome-free leather production is currently one of the most concerning needs to warrant the sustainable development of the leather industry due to the serious chrome pollution. Driven by these research challenges, this work explores using biobased polymeric dyes (BPDs) based on dialdehyde starch and reactive small-molecule dye (reactive red 180, RD-180) as novel dyeing agents for leather tanned using a chrome-free, biomass-derived aldehyde tanning agent (BAT). FTIR, 1H NMR, XPS, and UV-visible spectrometry analyses indicated that a Schiff base structure was generated between the aldehyde group of dialdehyde starch (DST) and the amino group of RD-180, resulting in the successful load of RD-180 on DST to produce BPD. The BPD could first penetrate the BAT-tanned leather efficiently and then be deposited on the leather matrix, thus exhibiting a high uptake ratio. Compared with the crust leathers prepared using a conventional anionic dye (CAD), dyeing, and RD-180 dyeing, the BPD-dyed crust leather not only had better coloring uniformity and fastness but it also showed a higher tensile strength, elongation at break, and fullness. These data suggest that BPD has the potential to be used as a novel sustainable polymeric dye for the high-performance dyeing of organically tanned chrome-free leather, which is paramount to ensuring and promoting the sustainable development of the leather industry.

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“…Renewable materials are potential renewable sources for chrome-free tanning agents. Biomass-derived aldehyde tanning agents can endow crust leather with similar properties to those produced with conventional chrome tanning, especially with terminal aluminum tanning treatment. − Oligosaccharides with abundant −CHO/–COOH functionalities obtained by the degradation of hemicellulose are good masking agents for aluminum and zirconium species, achieving satisfactory chrome-free tanning effects.…”

Section: Introductionmentioning

confidence: 99%

One-Step Synthesis of Starch-Based Composite Chrome-Free Tanning Agents via In Situ Catalysis Using Hydrotalcites

Shen

Fan

et al. 2023

ACS Sustainable Chem. Eng.

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The oxidation of starch into valuable chemicals holds great promise for the leather industry, but the catalytic efficiency of existing reactions is low. Moreover, residual catalyst in the reaction liquid is a potential environmental hazard. Herein, starch was oxidized by hydrogen peroxide and a magnesium aluminum iron hydrotalcite (MgAlFe-LDH) catalyst to introduce functional groups and nanomaterials, forming a starch-based hydrotalcite composite (OS-MgAlFe-LDH) in one step. This catalyst showed improved catalytic efficiency, and the generation of pollution was avoided. Moreover, the prepared OS-MgAlFe-LDH was suitable as a complex tanning agent for chrome-free tanning with improved efficiency, and MgAlFe-LDH acted as a crosslinking reinforcing agent. Using this tanning agent, the hydrothermal stability of crust leather was enhanced (shrinkage temperature: 75 °C). The tanned leather had high porosity (79.06%) and a uniform tanning agent distribution ascribed to the varying molecular weights of the components of the OS-MgAlFe-LDHs (weight-average molecular weight: 5438 g/mol). The binding energy between OS-MgAlFe-LDHs and the leather collagen (94.62 kcal/mol) was high, inhibiting the migration of OS-MgAlFe-LDHs from the collagen matrix. Thus, OS-MgAlFe-LDHs exhibited strong crosslinking performance with leather collagen. In summary, a sustainable and environmental-friendly tanning agent was prepared by a one-step synthesis in this work, offering a fundamental step for the preparation of biomass materials in the leather industry.

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A novel synergistic covalence and complexation bridging strategy based on multi-functional biomass-derived aldehydes and Al(III) for engineering high-quality eco-leather

Cited by 14 publications

References 46 publications

Lignin Demethylated by Protic Ionic Liquid as a Novel and Sustainable Chrome-Free Tanning Agent for Eco-Leather Production

Lignin Demethylated by Protic Ionic Liquid as a Novel and Sustainable Chrome-Free Tanning Agent for Eco-Leather Production

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

One-Step Synthesis of Starch-Based Composite Chrome-Free Tanning Agents via In Situ Catalysis Using Hydrotalcites

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