银离子固着丝胶增重蚕丝工艺

 采用硝酸银处理蚕丝，使银离子通过与蚕丝分子的配位结合附着于纤维，减少丝胶溶失，达到保持蚕丝重量和起到抗菌功效的目的。本文探讨分析了硝酸银、硝酸、醋酸、硝酸铵的使用，以及固着液浴比、处理时间、预浸时间等诸多因素对蚕丝丝胶的溶失影响。结果表明，银离子附着于蚕丝纤维后，能减少丝胶的溶失，对蚕丝起间接增重作用。在银离子固着液中，使用硝酸的效果比醋酸好，加入硝酸铵能明显提高丝胶固着，大大减少丝胶溶失；对蚕丝的预浸时间和固着时间不宜过长，固着液浴比以小浴比为宜。

Fixation of silver ions onto silk sericin for silk weighting

In order to keep the silk weight and increase antibacterial capacity of silk fiber, the silk fabrics were treated using the silver nitrate solution, and the silver ions were adsorbed to the silk fiber by coordination bonds, while the sericin dissolution decreased simultaneously. This paper discussed the usage of different reagents and the experimental conditions for the influences of sericin dissolution, such as silver nitrate, nitric acid, acetic acid, ammonia nitrate, fixation bath ratio, fixation time, preimpregnation time etc. As shown from the experimental results, the adsorption of silver ions on silk fiber surface can decrease the silk dissolution and increased the silk fiber weight indirectly. In the fixation solution, the usage of nitric acid especially ammonia nitrate, comparing to acetic acid, can decrease the sericin dissolution significantly. Furthermore, the preimpregnation time and fixing time should not be long, and the fixation bath ratio should be small.