Gao Ya-Nan, Wang Ye, Yue Tian-Ning, Weng Yun-Xuan, Wang Ming
Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
Key Laboratory of Processing and Quality Evaluation Technology of Green Plastics of China National Light Industry Council, Beijing Technology and Business University, Beijing 100048, China.
J Colloid Interface Sci. 2021 Jan 15;582(Pt A):112-123. doi: 10.1016/j.jcis.2020.08.037. Epub 2020 Aug 11.
Multifunctional cotton fabrics have attracted significant attention as next-generation wearable materials. Herein, we report a facile method for the fabrication of flexible and wearable cotton fabrics with ultra-high electromagnetic interference (EMI) shielding, antibacterial, and superhydrophobic properties. Cotton fabrics were first coated chemically with silver nanoparticles using polydopamine as adhesive and then with hydrophobic polydimethylsiloxane or polyimide. The introduction of polydopamine significantly increased the bond between silver nanoparticles and cotton fibers, thereby preventing silver nanoparticles from falling off the surface. The composite fabrics exhibited a high conductivity of ~1000 S/cm, and their EMI shielding effectiveness increased up to ~110 dB. The composite fabrics exhibited excellent self-cleaning performance and acid-alkali corrosion resistance because of their superhydrophobicity. Notably, the fabric composites showed a significant antibacterial action against Staphylococcus aureus and Escherichia coli.
多功能棉织物作为下一代可穿戴材料已引起广泛关注。在此，我们报道了一种简便的方法来制备具有超高电磁干扰（EMI）屏蔽、抗菌和超疏水性能的柔性可穿戴棉织物。首先使用聚多巴胺作为粘合剂将银纳米颗粒化学涂覆在棉织物上，然后再涂覆疏水性聚二甲基硅氧烷或聚酰亚胺。聚多巴胺的引入显著增强了银纳米颗粒与棉纤维之间的结合力，从而防止银纳米颗粒从表面脱落。复合织物表现出约1000 S/cm的高电导率，其电磁干扰屏蔽效能提高到约110 dB。由于具有超疏水性，复合织物表现出优异的自清洁性能和耐酸碱腐蚀性。值得注意的是，织物复合材料对金黄色葡萄球菌和大肠杆菌表现出显著的抗菌作用。
