An exploration of enhancing thermal stability of leather by hydrophilicity regulation:effect of hydrophilicity of phenolic syntan
作者机构：National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan UniversityChengdu 610065China Key Laboratory of Leather Chemistry and Engineering(Sichuan University)Ministry of EducationChengdu 610065China Sichuan Decision New Material Technology Co.Ltd.Deyang 618000China
出 版 物：《Journal of Leather Science and Engineering》 (皮革科学与工程（英文）)
年 卷 期：2022年第4卷第1期
页 面：310-319页
学科分类：0710[理学-生物学] 0821[工学-纺织科学与工程] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0811[工学-控制科学与工程] 0702[理学-物理学]
基 金：the National Natural Science Foundation of China(21978176)
主 题：Thermal stability Phenolic formaldehyde syntan Hydrophobicity Water content Molecular dynamics simulation
摘 要：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.
维普期刊数据库