Oxidized Maltodextrin: A Novel Ligand for Aluminum–Zirconium Complex Tanning

IF 0.6 4区 工程技术 Q4 CHEMISTRY, APPLIED Journal of The American Leather Chemists Association Pub Date : 2021-05-03 DOI:10.34314/jalca.v116i5.4293
Xu Guo, Yue Yu, Ya-nan Wang, B. Shi
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引用次数: 2

Abstract

Hydrogen peroxide (H2O2) oxidized maltodextrin was prepared as the ligand for aluminum–zirconium complex tanning. The effects of catalyst dosage, initiation temperature, and H2O2 dosage on maltodextrin oxidation were investigated. FT-IR analysis demonstrated that carboxyl groups were successfully introduced into oxidized maltodextrin. The carboxyl content and degradation degree of oxidized maltodextrin increased with the increase of H2O2 dosage.  Maltodextrin oxidized by 40% H2O2 and 0.015% Cu–Fe catalyst at an initiation temperature of 70°C (OD-40) with moderate carboxyl group (6.75 mmol/g) and molecular weight (Mw 450) promoted the penetration and fixation of aluminum–zirconium salts in leather and showed better tanning performance, such as hydrothermal stability and porosity of leather, than traditional citric acid ligand.
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氧化麦芽糊精:铝锆复合鞣剂的新型配体
制备了过氧化氢(H2O2)氧化麦芽糖糊精作为铝锆复合鞣剂的配体。考察了催化剂用量、引发温度和H2O2用量对麦芽糖糊精氧化反应的影响。FT-IR分析表明,羧基被成功地引入氧化麦芽糊精中。氧化麦芽糊精的羧基含量和降解程度随H2O2用量的增加而增加。麦芽糊精经40% H2O2和0.015% Cu-Fe催化剂氧化,起始温度为70℃(OD-40),羧基适中(6.75 mmol/g),分子量适中(Mw 450),促进了铝锆盐在皮革中的渗透和固定,并表现出比传统柠檬酸配体更好的制革性能,如水热稳定性和皮革孔隙率。
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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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