全波段紫外吸收碳点用于棉织物防紫外线危害  

Full-band UV-absorbing carbon dots for anti-UV finish of cotton fabric

作　　者：赵辉[1] 陈聪聪 刘应亮 ZHAO Hui;CHEN Congcong;LIU Yingliang(School of Industrial Design,Guangzhou Academy of Fine Arts,Guangzhou 510006,Guangdong,China;School of Materials and Energy,South China Agricultural University,Guangzhou 510642,Guangdong,China)

机构地区：[1]广州美术学院工业设计学院,广东广州510006 [2]华南农业大学材料与能源学院,广东广州510642

出　　处：《上海纺织科技》2024年第4期75-80,106,共7页Shanghai Textile Science & Technology

基　　金：广州美术学院项目(17XJA033);国家自然科学基金项目(12174119)。

摘　　要：以叶酸为原料,使用一步水热法合成了氮掺杂碳点(CDs)。所制备的碳点在水中具有良好的分散性,实现了单一碳点的全紫外吸收。进一步将CDs水溶液和水性聚氨酯WPU溶液按比例共混,使用浸渍的方式使碳点紫外吸收剂牢固附着于棉织物表面。再对棉织物进行干燥处理,测试了织物的紫外线防护系数、耐水洗性能及力学性能。试验结果表明:经CDs/WPU处理后,棉织物的紫外线抵御能力随碳点含量的增加而增加;当处理棉织物的碳点质量浓度为5 mg/mL时,其UPF值达到46.3,且水洗10次后UPF值仍可保持在40以上,达到较高的紫外防护级别;处理后棉织物的力学性能和柔韧性并没有受到影响。研究结果表明,所制备的碳点有望作为新型紫外吸收剂应用于棉织物的紫外线抵御。Nitrogen-doped carbon dots(CDs)are synthesized using a one-step hydrothermal method using folic acid as the raw material.The prepared carbon dots have good dispersion in water and can achieve full UV absorption of a single carbon dot.Further,the aqueous solution of CDs and aqueous polyurethane WPU solution are blended in proportion,and the carbon dot UV absorber is applied to cotton fabric using impregnation-drying method,and then the finished cotton fabric is tested for UV protection factor,washing resistance and mechanical properties.The experiments show that the anti-UV property of cotton fabrics treated with CDs/WPU increases with the increase of carbon dots.When the concentration of carbon dots is 5 mg/mL,the UPF value of treated cotton fabric can reach 46.3,and the UPF value remaines above 40 after 10 washes,which can reach a high anti-UV level.Moreover,the mechanical properties and flexibility of the treated cotton fabrics are not affected.The results indicate that the prepared carbon dots are expected to be used as a new UV absorbers for anti-UV finish of cotton fabrics.

关 键 词：全紫外吸收碳点 棉织物 紫外线防护系数 机械性能 

分 类 号：TS101.923.6[轻工技术与工程—纺织工程]