Page 182 - 《精细化工》2021年第9期

第 38 卷第 9 期 精 细 化 工 Vol.38, No.9
202 1 年 9 月 FINE CHEMICALS Sept. 2021

皮革化学品
马桑皮植物鞣剂与铝盐结合鞣制性能及机理

3*
1*
1
郭林新 1,2 ，强涛涛 ，马养民 ，任龙芳
（1. 陕西科技大学 轻工科学与工程学院，陕西 西安 710021；2. 安康学院 化学化工学院，陕西 安康
725000；3. 中国轻工业轻化工助剂重点实验室，陕西 西安 710021）

摘要：以提取于马桑皮的植物鞣剂为原料，与铝盐进行绵羊酸皮结合鞣制，优化鞣制工艺并建立基于马桑皮植
物鞣剂植铝结合鞣制方法，对鞣制后皮革性能及鞣制机理进行研究。结果表明，当马桑皮植物鞣剂用量为酸皮
质量的 15%、Al 3 (SO 4 ) 2 •18H 2 O 用量为酸皮质量的 20%、渗透 pH 为 4.0、结合 pH 为 4.5 的条件下，皮革收缩温
度可达 110.5 ℃。皮革表观性能良好，增厚率为 82.2%±2.7%、抗张强度为(10.0±1.1) MPa、撕裂强度为(52.5±1.9)
N/mm、断裂伸长率为 76.8%±3.3%，优于橡椀鞣剂结合鞣制的皮革。鞣制后皮革胶原纤维变粗，形成紧密的网
状结构，马桑皮植物鞣剂能充分渗透至皮革胶原纤维中，并与其产生氢键交联。在结合鞣制时，铝盐与皮革胶
原纤维中结合的单宁类成分产生络合，使交联作用增强，从而显著提高成革的热稳定性能和机械性能。
关键词：马桑；植物鞣剂；结合鞣制；鞣制性能；鞣制机理；皮革化学品
中图分类号：TS529.2 文献标识码：A 文章编号：1003-5214 (2021) 09-1896-08

Tanning performance and mechanism of Coriaria nepalensis bark

vegetable tanning agent combined with aluminum salt

1,2
1
1*
3*
GUO Linxin , QIANG Taotao , MA Yangmin , REN Longfang
（1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi′an
710021, Shaanxi, China; 2. College of Chemistry and Chemical Engineering, Ankang University, Ankang 725000,
Shaanxi, China; 3. Key Laboratory of Chemical Additives for China National Light Industry, Xi′an 710021, Shaanxi,
China）
Abstract: Pickled sheep skin was tanned by vegetable tanning agent extracted from Coriaria nepalensis
bark combined with aluminum salt. The tanning process was optimized and a combined tanning method
was established. The tanning properties and tanning mechanism of tanned leather were studied. The results
showed that under the conditions of vegetable tanning agent dosage being 15% of the mass pickled skin,
Al 3(SO 4) 2•18H 2O dosage being 20% of the mass pickled skin, penetration pH 4.0 and combined pH 4.5, the
shrinkage temperature of tanned leather could reach 110.5 ℃. The tanned leather had good appearance
properties, with a thickness increase rate of 82.2%±2.7%, tensile strength of (10.0±1.1) MPa, tear strength
of (52.5±1.9) N/mm, elongation at break of 76.8%±3.3%, which was better than that of the tanned leather
made by a combined tanning method from valonia vegetable tanning agent. After tanning, collagen fiber of
leather became thicker and formed a tight network structure. Coriaria nepalensis bark vegetable tanning
agent and aluminum salt could fully penetrate into the collagen fiber of leather and produce hydrogen bond
cross-linking with them. During the combined tanning process, aluminum salt complexed with tannins in
leather collagen fiber, which enhanced the cross-linking effect and significantly improved the thermal
stability and mechanical properties of tanned leather.
Key words: Coriaria nepalensis; vegetable tanning agent; combined tanning; tanning performance; tanning
mechanism; leather chemicals

收稿日期：2021-03-19; 定用日期：2021-05-17; DOI: 10.13550/j.jxhg.20210286
基金项目：陕西省教育厅重点科学研究计划（协同创新中心项目）（20JY003）；陕西省重点科技创新团队（2020TD-009）
作者简介： 郭林新（1990—），男，博士生，E-mail：glx9933@foxmail.com。联系人：强涛涛（1980—），男，教授，E-mail：qiangtt515@
163.com；马养民（1963—），男，教授，E-mail：mym63@sina.com。