通过亲水性调节提高皮革热稳定性的探索:酚类化合物亲水性的影响

Qingyong Sun, Yunhang Zeng, Yue Yu, Ya-nan Wang, Bi Shi
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引用次数: 4

摘要

复鞣对皮革热稳定性的影响日益引起人们的关注。然而,复鞣剂的亲水性与皮革耐热性之间的关系及其机理尚不清楚。本文以酚醛鞣剂(pfs)为研究对象,探讨了复鞣剂的亲水性对复鞣革热稳定性的影响。皮革的热稳定性与pfs的亲水基团含量(磺化度)密切相关。随着磺化程度的增加,pfs及其复鞣皮革的吸水率降低,而皮革的热稳定性提高。分子动力学模拟结果证明,pfs的引入降低了胶原分子与水的结合能力,从而减少了经pfs处理的胶原周围的水分子。研究结果可指导制革企业合理选择复鞣剂,提高皮革的热稳定性。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An exploration of enhancing thermal stability of leather by hydrophilicity regulation: effect of hydrophilicity of phenolic syntan

Effect of retanning on the thermal stability of leather is eliciting increasing attention. However, the relationship between the hydrophilicity of retanning agents and the heat resistance of leather and the corresponding mechanism remain unclear. Herein, phenolic formaldehyde syntans (PFSs) were selected as models to explore the effect of the hydrophilicity of retanning agents on the thermal stability of retanned leather. The thermal stability of leather was closely correlated to the hydrophilic group content (sulfonation degree) of PFSs. As the sulfonation degree increased, the water absorption rate of PFSs and their retanned leathers decreased, whereas the thermal stability of leather increased. Molecular dynamics simulation results proved that the introduction of PFSs could reduce the binding ability of collagen molecules with water and thus decreased the water molecules around the PFS-treated collagen. These results may provide guidance for the tanners to select retanning agents reasonably to improve the thermal stability of leather.

Graphical Abstract

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来源期刊
Journal of Leather Science and Engineering
Journal of Leather Science and Engineering 工程技术-材料科学:综合
CiteScore
12.80
自引率
0.00%
发文量
29
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