壳聚糖改性织物中原位合成银纳米粒子

采用壳聚糖改性棉和涤纶织物,通过织物表面的壳聚糖原位吸附、还原银离子制备了纳米银抗菌织物.用场发射扫描电子显微镜(SEM)、X射线能谱(EDA)、X射线粉末衍射仪(XRD)和反射光谱等对纳米银织物进行了表征,研究了银离子浓度和壳聚糖浓度对纳米银织物的影响,并检测了纳米银织物的抗菌性能.结果表明,在无需任何还原剂的条件下,壳聚糖改性的棉和涤纶织物表面可以均匀地形成银纳米粒子,晶粒大小为5~10 nm,所制备的纳米银织物均具有优异的抗菌性能.

In situ Synthesis of Silver Nanoparticles on Fabric Attached with Chitosan

Cotton and polyester fabrics modified with silver nanoparticles were synthesized in situ through the reaction of absorption and reduction of chitosan which was attached on the surface of respective fibers. The obtained nanosilver fabrics were characterized by scanning electronic microseopy(SEM), energy dispersive X-ray(EDX) microscopysis, X-ray diffraction(XRD) and reflectance spectrum, and the influence of the concentration of silver ion and chitosan solution on the nanosilver fabrics was investigated. The antibacterial performances of the prepared nanosilver fabrics towards E. coil and S. aureus were detected. The results indicated that silver nanoparticles were uniformly formed on the surface of cotton and polyester fabrics attahced with chitosan, without any reductant addition. The crystalline size of the silver nanoparticels was about 5—10 nm. The prepared nanosilver cotton and polyester fabrics exhibited good antibacterial activity and antibacterial durability.