氧化石墨烯协同TiO2/SiO2改性涤/棉织物的抗菌持久性与服用性

为解决单一TiO₂改性涤/棉织物在可见光下光催化效率低、抗菌活性弱且不持久等问题,采用氧化石墨烯协同TiO₂/SiO₂掺杂复合改性涤/棉织物。利用场发射显微镜、明暗条件下的抗菌性实验、纺织品色牢度实验、拉伸断裂测试和弯曲性能测试等手段对复合改性前后织物的微观形貌、抗菌性及抗菌持久性、服用性能等进行分析评价。结果表明:在可见光下,TiO₂/SiO₂/氧化石墨烯复合改性织物表面纳米粒子涂覆均匀,抑菌率在99%以上,复合改性织物在15次水洗后其抑菌率仍保持为98.5%;虽然改性后织物的拉伸断裂性能、透气性能、手感等都有一定程度的损失,但损失影响不大。

Antibacterial durability and wearability of polyester/cotton fabric modified collaboratively by graphene oxide and TiO2/SiO2

In order to solve the low photocatalytic efficiency, weak antibacterial activity and poor endurability of polyester/cotton fabrics modified by TiO₂ under visible light, polyester/cotton fabrics were modified by the combination of graphene oxide(GO) and TiO₂/SiO₂. A field-emission microscope, antibacterial experiments in light and dark condition, color fastness of textiles, tensile fracture and flexural properties tests were adopted to analyze and evaluate micro-morphologies, antimicrobial properties and antibacterial durability, wearability of fabrics before and after the combined modification. The experimental results show that the nanoparticles dispersed uniformly and coated on the fabrics modified by GO and TiO₂/SiO₂ and the antibacterial rate of composite modified fabrics is over 99% under visible light. After 15 times of washing, the antibacterial rate of the composite modified fabrics is 98.5%. Meanwhile, the process has no significant negative effect on the tensile breaking properties, air permeability and hand feeling of the modified fabric.