Preparation of sulfated/sulfonated castor oil through an eco-friendly process and its application in leather

IF 3.1 3区化学 Q2 POLYMER SCIENCE

Polymer Bulletin Pub Date : 2025-02-28 DOI:10.1007/s00289-025-05697-4

Yanfen Mao, Yueqing Huo, Shengti Cao, Song Guo, Xiaochen Liu

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引用次数: 0

Abstract

Today, the world is calling for conserve water and environmentally friendly production. This study examines the feasibility of producing fatliquor from castor oil using the sulfur trioxide process instead of the traditional concentrated sulfuric acid process. Fatliquor, which enabled the leather fiber to lubricate, was prepared by sulfated castor oil with sulfur trioxide at a particular temperature. Moreover, five types of anionic fatliquors were prepared by changing the SO₃/castor oil ratio. Physical and chemical studies of fatliquoring agents such as viscosity, pH, solid content, organically combined sulfuric anhydride, iodine value, saponification value, and emulsifying stability were determined before its application on leather. The effects of sulfonation degree and ester bond retention on the characteristics of fatliquored leather were investigated. The softness, tensile strength, elongation at break, and tear strength of the best experimental leather are 12.6%, 18.1%, 25.0%, and 172.6% larger than the commercially available product, respectively. Too much hydrolysis of ester bonds will cause the softness of the fatliquored leather to deteriorate. In addition, the experimental emulsion is easily biodegradable.

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环保工艺制备硫酸/磺化蓖麻油及其在皮革中的应用

今天，全世界都在呼吁节约用水和环境友好型生产。研究了用三氧化硫法代替传统的浓硫酸法生产蓖麻油加脂剂的可行性。将蓖麻油与三氧化硫在一定温度下进行硫酸酸化，制备出润滑皮革纤维的加脂剂。通过改变SO3/蓖麻油的比例，制备了5种阴离子型加脂剂。对加脂剂在皮革上应用前的粘度、pH、固含量、有机组合酸酐、碘值、皂化值、乳化稳定性等进行了理化研究。研究了磺化度和酯键保留率对加脂皮革性能的影响。最佳实验皮革的柔软度、抗拉强度、断裂伸长率和撕裂强度分别比市售产品高12.6%、18.1%、25.0%和172.6%。过多的酯键水解会使加脂皮革的柔软度变差。此外，实验乳液易于生物降解。

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来源期刊

Polymer Bulletin 化学-高分子科学

CiteScore

6.00

自引率

6.20%

发文量

审稿时长

5.5 months

期刊介绍： "Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad. "Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."