牛皮在尿素/氢氧化钙溶液中的胶原纤维开口

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.v116i5.4290

Qian Zhang, Jie Liu, Xiu-Ling Liu, Hui Liu, Yadi Hu, K. Tang

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引用次数: 0

摘要

在制革过程中，石灰化会直接影响到胶原蛋白的结构和性能，以及制革的质量。然而，石灰的组成和含量对石灰机理的影响是相当复杂的。本研究以氢氧化钙和尿素为原料进行石灰化。定量分析了溶液pH、皮溶胀率和非胶原蛋白去除率。用光学显微镜研究了石灰皮和新鲜皮的形态。采用热重分析和傅里叶变换红外光谱相结合的方法，对牛皮纤维打开的反应机理进行了分析和推测。结果表明，尿素/氢氧化钙石灰处理的皮革纤维束的打开效果优于纯氢氧化钙石灰处理。提出了尿素/氢氧化钙溶液体系中石灰化的机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Collagen Fiber Opening of Cattle Hides in Urea/Calcium Hydroxide Solutions

In the beamhouse, liming might directly affect the structure and performance of collagen, as well as the quality of resultant leather. However, the influences of composition and content of liming agents on liming mechanism are quite complicated. In this study, calcium hydroxide and urea were utilized in liming. The solution pH, hide swelling ratio and non-collagenous protein removal were quantitatively analyzed. The morphologies of both limed and fresh hides were studied by optical microscopy. The reaction mechanism of fiber opening up of cattle hides was analyzed and speculated by the combination of thermogravimetric analysis and Fourier transformation infrared spectroscopy. It was found that the fiber bundles of hides limed by urea/calcium hydroxide have a better opening up effect than that by pure calcium hydroxide. The mechanism of liming in an urea/calcium hydroxide solution system was proposed.

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来源期刊

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

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.