氧化亚硫酸化菜籽油加脂剂的制备及性能研究

doi:10.19677/j.issn.1004-7964.2024.01.011

Leather Science and Engineering ›› 2024, Vol. 34 ›› Issue (1): 75-82.doi: 10.19677/j.issn.1004-7964.2024.01.011

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Preparation and Properties of Fatliquoring Agent Derived from Oxidized Sulfited Rapeseed Oil

WANG Luyao^1,2, CHEN Xiang³, WANG Yulu³, ZHANG Jiaxing¹, JIA Xinyu^1,2, JIANG Diyong³, CHEN Hui^1,2,*

1. Sichuan University, College of Biomass Science and Engineering, Chengdu 610065, China;
2. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China;
3. Sichuan Lutianhua Innovation Research Institute Co. Ltd, Luzhou 646000, China

Received:2023-07-26 Revised:2023-10-09 Accepted:2023-10-16 Published:2024-02-01 Online:2024-01-08

Abstract

Abstract: Oxidized rapeseed oil was sulfited by sodium bisulfite and neutralized by triethanolamine to obtain a vegetable oil-based fatliquoring agent (OSF-T). The low iodine value fatliquoring agent (OSF-PT) was then obtained by adding peracetic acid to remove residual sulfite. The two fatliquoring agents were applied to the fatliquoring experiment of cowhide wet blue, and their performance was compared with that of the commercial fatliquoring agent AMK. Results showed that both OSF-T and OSF-PT emulsions exhibited particle sizes ranging from 10 to 180 nm, which were smaller than that of AMK. Furthermore, OSF-T and OSF-PT exhibited excellent emulsion stability and dispersibility. Their fatliquoring performance was good. The softness of OSF-T fatliquored leather can reach 6.5 mm, and the content of volatile organic compounds (VOC) was 123.7 g/m². The VOC content of OSF-PT fatliquored leather was 121.3 g/m². The VOC contents of the above samples were lower than that of the commercial products (164.3 g/m²). The color of black OSF-PT fatliquored leather was lighter than that of AMK fatliquored leather, and the color difference (ΔE ) was 4.12. OSF-PT was more suitable for light leather fatliquoring. After thermal aging and ultraviolet aging treatments, the tensile strength of OSF-T fatliquored leather remained above 15 MPa, and the content of hexavalent chromium was less than 5 mg/kg. Fatliquoring agent OSF-T was slightly better than the commercial fatliquoring agent AMK in terms of softness, mechanical properties, aging resistance and hexavalent chromium content.

Key words: oxidized rapeseed oil, oxidation-sulfitation, vegetable oil-based fatliquoring agent, aging resistance

CLC Number:

TS529.4

WANG Luyao, CHEN Xiang, WANG Yulu, ZHANG Jiaxing, JIA Xinyu, JIANG Diyong, CHEN Hui. Preparation and Properties of Fatliquoring Agent Derived from Oxidized Sulfited Rapeseed Oil[J]. Leather Science and Engineering, 2024, 34(1): 75-82.

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Preparation and Properties of Fatliquoring Agent Derived from Oxidized Sulfited Rapeseed Oil

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