三聚氯氰与氨基葡萄糖反应产物的鞣革性能

Tanning properties of the reaction products of cyanuric chloride and glucosamine

摘要:

以三聚氯氰(TCT)和氨基葡萄糖为原料,合成了N,O-二-(4,6-二氯-1,3,5-三嗪基) -氨基葡萄糖(简称CG)。通过FTIR和₁^HNMR对合成产物的结构进行了表征。并将其用于生皮鞣制实验,以脱灰软化状态的绵羊皮为实验材料,通过单因素实验确定了适宜的鞣制工艺条件为：CG鞣剂用量为7.5% (以灰皮质量计),鞣制过程采用30、40、45℃阶梯控温模式进行,各温度对应下的鞣制时间为1、1.5、2h；通过提碱使得浴液pH最终维持在6.0~6.5。实验结果表明：CG鞣制的坯革收缩温度可达78.9℃,革面洁白细腻,身骨柔软。该鞣剂是一种具有良好鞣制效果和应用前景的新型的有机合成鞣剂。

Abstract:

N,O-二-(4,6-dichloro-1,3,5-triazinyl)-glucosamine (CG) was synthesized from cyanuric chloride (TCT) and glucosamine. The structure of the synthesized product was characterized by FTIR and _¹HNMR. And it was used in the leather tanning experiment. Taking the pickled sheepskin as the material, the proper tanning process conditions were determined by single factor experiment: the dosage of CG tanning agent was 7.5% (based on the mass of the limed skin, the same below), and the tanning process was carried out in a step temperature control mode of 30, 40, and 45℃. The tanning time was 1, 1.5, and 2h, respectively; the pH of the bath solution was finally maintained at 6.0-6.5 by basification. The experimental results showed that the shrinkage temperature of the CG tanned crust leather can reach 78.9℃, the leather surface was white and delicate, and the body and bones were soft. This tanning agent is a new organic synthetic tanning agent with good tanning effect and application prospect.