Jiang, Zhicheng, Xu, Shuguang, Ding, Wei et al. (5 more authors) (2021) Advanced masking agent for leather tanning from stepwise degradation and oxidation of cellulose. Green Chemistry. pp. 4044-4050. ISSN 1463-9270
Abstract
An oligosaccharide-based masking agent suitable for chrome-free metal tanning was produced from cellulose via a stepwise degradation and oxidation process. Firstly, an AlCl3-NaCl-H2O/γ-valerolactone (GVL) biphasic solvent system was established for cellulose conversion (87.6%), which allowed in situ separation of the oligosaccharides and valuable small molecules into the two phases. Then, a H2O2 oxidation process enabled further degradation of the oligosaccharides and introduced –CHO/–COOH groups. This process strengthened the surface charge of the oligosaccharides, enhancing their coordination ability with metal ions. The post-oxidized fraction, together with added Zr species, exhibited satisfactory tanning performance, with a shrinkage temperature of 85.2 °C for the tanned leather. Al/Zr species could spontaneously coordinate with O atoms of O[double bond, length as m-dash]C(2) in the carboxylic group of post-oxidized oligosaccharides, which promoted the penetration of Al/Zr species into the leather matrix for efficient crosslinking reactions.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Royal Society of Chemistry 2021. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 05 Jul 2021 11:50 |
Last Modified: | 05 Jan 2025 00:30 |
Published Version: | https://doi.org/10.1039/D1GC01264A |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1039/D1GC01264A |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:175855 |
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Description: Advanced masking agent for leather tanning from stepwise degradation and oxidation of cellulose
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