TWLZ复鞣对TWS鞣革纤维吸附栲胶性能的影响

doi:10.19677/j.issn.1004-7964.2022.01.005

皮革科学与工程 ›› 2022, Vol. 32 ›› Issue (1): 27-33.doi: 10.19677/j.issn.1004-7964.2022.01.005

TWLZ复鞣对TWS鞣革纤维吸附栲胶性能的影响

杨盼¹, 强西怀^1,2,*

1.陕西科技大学轻工科学与工程学院,陕西西安 710021;
2.轻化工程国家级实验教学示范中心,陕西西安 710021

收稿日期:2021-07-02 出版日期:2022-02-28 上线日期:2022-01-13
通讯作者: *qiangxihuai@163.com
作者简介:杨盼(1997-),女,硕士研究生,主要研究方向：制革清洁生产及其应用化学品,E-mail：2417616757@qq.com。
基金资助:
国家重点研发计划项目（2017YFB0308500）; 陕西科技大学研究生创新基金项目（TD12-04）

Effect of TWLZ Retanning on the Adsorption of TWS Tanned Leather Fiber to Tannin Extract

YANG Pan¹, QIANG Xihuai^1,2,*

1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China;
2. National Demonstration Center for Experimental Light Chemistry Engineering Education, Xi'an 710021, China;

Received:2021-07-02 Online:2022-02-28 Published:2022-01-13

摘要/Abstract

摘要： 以TWS鞣制的坯革纤维为实验对象,用铬粉和TWLZ分别进行复鞣处理,首先借助于Zeta电位测定仪和热重分析方法,系统实验探究了两种复鞣方法对TWS鞣革纤维的等电点（pI）和热稳定性的影响规律;其次采用吸附实验法,研究两种复鞣剂处理对TWS鞣革纤维吸附荆树皮栲胶的差异性。实验结果表明：铬复鞣后坯革纤维等电点上升1.1,TWLZ复鞣后的鞣革纤维等电点也相应提高1.8,两种复鞣处理均可以明显增加TWS鞣革纤维表面的正电性,而且坯革纤维的热稳定性也有不同程度的提高;TWS鞣革纤维及其相应的铬复鞣和TWLZ复鞣坯革纤维对荆树皮栲胶的吸附过程均符合准二级动力学方程和Freundlich等温模型,复鞣处理可以显著提高TWS鞣革纤维对荆树皮栲胶吸附性能,而且两种复鞣坯革纤维的吸附规律也基本接近。说明TWLZ鞣革对适用于铬鞣革的栲胶材料具有良好的兼容性,研究结果可为无铬鞣的坯革在使用栲胶进行复鞣填充处理工艺中提供一定的理论支撑。

关键词: TWLZ鞣剂, TWS鞣剂, 荆树皮栲胶, 吸附, 皮革

Abstract: Taking the crust leather fiber tanned by TWS as the experimental object, the retanning treatment was carried out with chrome powder and TWLZ tanning agent respectively. Firstly, with the help of the Zeta potential analyzer and the thermogravimetric analysis, the influence of two retanning methods on the isoelectric point (pI) and thermal stability of TWS tanned leather fibers was systematically investigated; secondly, the adsorption difference of wattle extract on TWS tanned leather fiber was studied by adsorption experiment. The results show that the isoelectric point of crust leather fiber increased by 1.1 after chrome retanning and 1.8 after TWLZ retanning. Both retanning treatments can significantly increase the surface electropositivity of TWS tanned leather fiber, and the thermal stability of the crust leather fiber is also improved to varying degrees. The adsorption processes of TWS tanned leather fiber and its corresponding chrome retanning and TWLZ retanning leather fiber to wattle extract conforms to the quasi-second-order kinetic equation and Freundlich equation isothermal model. The retanning treatment can obviously improve the adsorption property of TWS tanned leather fiber to wattle extract, and the adsorption rules of the two retanning leather fibers are basically similar. It shows that TWLZ tanned leather has good compatibility with tannin extract materials suitable for chrome tanned leather, and the research results can provide certain theoretical support for chrome-free tanned leather in retanning and filling process with tannin extract.

Key words: TWLZ tanning agent, TWS tanning agent, wattle extract, adsorption, leather

中图分类号:

TS543

杨盼, 强西怀. TWLZ复鞣对TWS鞣革纤维吸附栲胶性能的影响[J]. 皮革科学与工程, 2022, 32(1): 27-33.

YANG Pan, QIANG Xihuai. Effect of TWLZ Retanning on the Adsorption of TWS Tanned Leather Fiber to Tannin Extract[J]. Leather Science and Engineering, 2022, 32(1): 27-33.

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TWLZ复鞣对TWS鞣革纤维吸附栲胶性能的影响

Effect of TWLZ Retanning on the Adsorption of TWS Tanned Leather Fiber to Tannin Extract

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