Alternative Tanning Agent for Leather Industry from a Sustainable Source

IF 0.6 4区 工程技术 Q4 CHEMISTRY, APPLIED
Cigdem Ozkan, H. Ozgunay
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引用次数: 0

Abstract

Dialdehyde starches with different aldehyde content from native corn starch were prepared by sodium periodate oxidation to be used as a tanning agent in leather making. For this purpose, native corn starch was oxidized with sodium metaperiodate in different molar ratios. After oxidation processes, the yields, solubility in water and aldehyde contents of the obtained dialdehyde starches were determined as well as structure characterizations by Proton Nuclear Magnetic Resonance Spectroscopy, Fourier Transform Infrared Spectroscopy and Gel Permeation Chromatography. Evaluating the gel permeation chromatography data, the dialdehyde starch samples which were thought to be in appropriate molecular weight/size to penetrate into skin fibers were selected to be used in the tanning process. Their tanning abilities were evaluated by investigating hydrothermal stabilities, filling and fiber isolation characteristics and physical properties determined by mechanical tests and organoleptically. From the evaluation of the results, it was revealed that sodium metaperiodate oxidized starches which have appropriate molecular weight and adequate aldehyde content has a remarkable tanning effect and can be utilized as a tanning agent with the advantages of not necessitating pickling process which means saving time and simplifying the production but more importantly offering an important advantage from an environmental point of view.
可持续来源的皮革工业鞣剂替代品
以天然玉米淀粉为原料,采用高碘酸钠氧化法制备不同醛含量的双醛淀粉,用于制革。为此,用不同摩尔比的偏碘酸钠氧化天然玉米淀粉。采用质子核磁共振光谱、傅里叶红外光谱和凝胶渗透色谱对氧化后的双醛淀粉进行了结构表征,并测定了所得双醛淀粉的收率、水溶性和醛含量。通过对凝胶渗透色谱数据的评估,选择了分子量/尺寸合适的双醛淀粉样品用于鞣制过程。通过水热稳定性、填充和纤维隔离特性以及力学和感官测定的物理性能来评价其鞣制能力。结果表明,分子量适中、醛含量充足的偏碘酸钠氧化淀粉具有显著的鞣制效果,可作为鞣制剂使用,不需要酸洗工序,节省时间,简化生产,更重要的是,从环保的角度来看,具有重要的优势。
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来源期刊
Journal of The American Leather Chemists Association
Journal of The American Leather Chemists Association 工程技术-材料科学:纺织
CiteScore
1.30
自引率
33.30%
发文量
29
审稿时长
3 months
期刊介绍: The Journal of the American Leather Chemists Association publishes manuscripts on all aspects of leather science, engineering, technology, and economics, and will consider related subjects that address concerns of the industry. Examples: hide/skin quality or utilization, leather production methods/equipment, tanning materials/leather chemicals, new and improved leathers, collagen studies, leather by-products, impacts of changes in leather products industries, process efficiency, sustainability, regulatory, safety, environmental, tannery waste management and industry economics.
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