二维氮化碳载铜聚酰胺纤维的制备及其抗菌性能

Preparation and antibacterial properties of two-dimensional carbon nitride copper-loaded polyamide fiber

为了开发一种新型抗菌纤维,在过硫酸钾(K_(2)S_(2)O_(8))改性的石墨相氮化碳上(g-C_(3)N_(4))原位生长纳米铜制备得到二维氮化碳载铜纳米复合材料(Cu/CN),然后以聚己内酰胺(PA6)为基体,经离心静电纺丝法制备二维氮化碳载铜聚酰胺纤维(Cu/CN@PA6)。对Cu/CN和Cu/CN@PA6的结构和性能进行表征,并评价Cu/CN@PA6的抗菌活性以及细胞毒性。结果表明:Cu/CN纳米复合材料保留了CN的主体结构,负载Cu/CN不影响聚己内酰胺的化学结构,并且Cu/CN@PA6仍有良好的热稳定性;Cu/CN@PA6对大肠杆菌和金黄色葡萄球菌的抗菌率分别达到99.90%和99.00%,且具有较低的细胞毒性。该新型抗菌纤维有望用于医疗和工业领域。

In order to develop a novel antibacterial fiber,two-dimensional carbon nitride copper-loaded nanocomposite(Cu/CN)was prepared by in situ growth of nano-copper on graphitic carbon nitride(g-C_(3)N_(4))modified by potassium persulfate(K_(2)S_(2)O_(8)).Two-dimensional carbon nitride copper-loaded polyamide fibers(Cu/CN@PA6)were prepared by centrifugal electrospinning,the structures and properties of Cu/CN and Cu/CN@PA6 were characterized,and the antibacterial activity and cytotoxicity of Cu/CN@PA6 were evaluated.The results indicated that the Cu/CN nano-composite reserved the main structure of CN,the loading of Cu/CN didn’t affect the chemical structure of polycaprolactam,and Cu/CN@PA6 still had good thermal stability.The antibacterial rates of Cu/CN@PA6 against E.coli and S.aureus reached 99.90%and 99.00%respectively,and the cytotoxicity was low.Therefore,this novel antibacterial fiber is expected to be used in medical and industrial fields.