载银剑麻抗菌纤维的制备及其抗菌性能的研究

Fabrication of antibacterial sisal fiber with Ag and tts antibacterial property

利用化学镀技术和紫外光照射还原技术,制备了剑麻抗菌纤维,对其结构和抗菌性能进行了研究。以纤维载银量为指标,探讨了硝酸银浸泡时间、硝酸银浓度、紫外光照射时间等因素对载银量的影响,确定了制备的最佳条件为:硝酸银浸泡时间为12h,硝酸银浓度为10mmol/L,紫外光照射时间为60min。利用扫描电子显微镜、X-射线能谱仪、红外光谱仪对剑麻抗菌纤维结构进行表征。结果表明所制备的剑麻抗菌纤维载银量较多,银主要依靠非化学键作用力而存在在剑麻表面上。所制备的剑麻抗菌纤维在48h内,银释放百分比分别为0.21%、0.17%,这说明银与剑麻的结合能力较强,且会持续稳定的释放出银。考察了载银剑麻纤维对金黄色葡萄球菌和肺炎克雷伯菌的抗菌效果。

The electroless plating technology and ultraviolet irradiation reduction technology were used to fabricate the antibacterial sisal fiber, whose structure and antibacterial properties were also studied. The mass of silver on sisal fiber （SF） as the index, the effect of immersing time, silver nitrate concentration and UV light exposure time were discussed to find out the optimum condition about fabricating antibacterial sisal fiber with silver： immersing time： 12h; silver nitrate con- centration： 10mmol/L; UV light exposure time： 60rain. Scanning electron microscopy, X-ray spectrometer and infrared spec- trometer were carried out to characterize the structure of SF/Ag. The results showed that there were a lot of silver particles on the surface of SF. What were more, they relied mainly on non-chemical bonds. The fraction of silver released on SF/Ag, which were fabricated by the methodology of electroless plating technology and ultraviolet irradiation reduction technology, were 0. 21 ~ and 0. 17 %, respectively. These figure suggested that the combination of silver particles and SF was relatively powerful and the silver would constantly, stably released from the surface of SF. Finally, study on the antibacterial activity of these materials were preliminary carried out for Staphylococcus aureus and Klebsiella pneumoniae.