摘要
为提高聚酯(PET)非织造布的性能,将导电材料通过表面改性引入PET非织造布,采用单宁酸(TA)作为桥联剂,功能化石墨烯(GN-g-MAH)和聚吡咯(PPy)作为导电功能层,制备得到多功能PET非织造布,并使用SEM、XRD、TG等测试了PET/GN-g-MAH/PPy的微观结构和热稳定性.结果表明:通过循环自组装法及低温化学聚合法成功制备了PET/GN-g-MAH/PPy非织造布,表现出良好的导电性,表面电阻率低至3.11×10-2Ω·m,表面由疏水转变为亲水.基于此,非织造布也表现出优异的电热性能,对其施加3 V驱动电压时,可在20 s内产生约40℃的饱和温度.此外,还具有良好的光热转换性能,当光照强度为300 mW/cm2时,照射20s后,表面温度可稳定到105.8℃,非织造布还表现出优异的光热抗菌性,当大肠杆菌的菌液浓度为1.6×108 CFU/mL时,使用氙灯模拟太阳光源照射后,抗菌率达到99.6％.
Abstract
In order to improve the performance of polyester(PET)non-woven fabrics,conductive materials was introduced into PET non-woven fabrics through surface modification,using tannic acid(TA)as a bridging agent and functi-onalized graphene(GN-g-MAH)and polypyrrole(PPy)as conductive functional layers to prepare multifunctional PET non-woven fabrics,and the microstructure and thermal stability of PET/GN-g-MAH/PPy were tested using SEM,XRD and TG.The results showed that PET/GN-g-MAH/PPy non-woven fabric was successfully prepared by cyclic self-assembly method and low-temperature chemical polymerization method,which exhibited good electrical conductivity with a low surface resistivity of 3.11×10-2Ω.m and surface conversion from hydrophobic to hydrophilic.Based on this,the non-woven fabric also exhibited excellent electrothermal properties,generating a saturation temperature of about 40 ℃ in 20 s when a 3 V driving voltage was applied to it.In addition,it also has good photothermal conversion performance.When the light intensity is 300 mW/cm2,the surface temperature can be stabilized to 105.8 ℃ after irradiation for 20 s,and the nonwoven fabric also shows excellent photothermal antibacterial properties.When the concentration of E.coli bacterial solution is 1.6×108 CFU/mL,the antibacterial rate reaches 99.6％after irradiation using xenon lamp simulating solar light source.
基金项目
国家先进印染技术创新中心科研基金资助项目(2022GCJJ06)
维普
万方数据