Department of Chemical and Polymer Engineering, Faculty of Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran.
Int J Biol Macromol. 2021 Feb 28;171:158-165. doi: 10.1016/j.ijbiomac.2020.12.220. Epub 2021 Jan 6.
Superhydrophobic cotton fabrics were fabricated using chitosan/titanium dioxide (TiO) nanocomposites. Morphology results revealed that the fabric's surface was utterly coated by the nanoparticles leading to the formation of a highly packed nano-scale structure in the case of superhydrophobic coating. X-ray photoelectron spectroscopy results also proved that TiO nanoparticles were highly adsorbed onto the fabric's top layer. Durability of the superhydrophobic coating was investigated by immersing the fabric into harsh solutions and also by subjecting the fabric to sonication. The results showed the high resistance of the superhydrophobic fabric against harsh conditions. The nanocomposite-coated fabrics were found to exhibit promising UV-protecting properties especially for the superhydrophobic fabric which showed around 80% enhancement in the UV protecting properties as compared with the uncoated fabric. The bacterial adhesion results revealed that the combination of chitosan and TiO results in high antibacterial properties against E. coli and S. aureus bacteria. The bacterial reduction percentages were further increased to 99.8 and 97.3% against E. coli and S. aureus, respectively, once the superhydrophobic character was also induced to the fabrics. The developed nanocomposite coated fabrics exhibited promising potential to be used as antibacterial and self-cleaning garments in hospital-related applications.
采用壳聚糖/二氧化钛（TiO）纳米复合材料制备超疏水棉织物。形貌结果表明，纳米颗粒完全覆盖了织物表面，导致超疏水涂层形成高度堆积的纳米级结构。X 射线光电子能谱结果也证明 TiO 纳米颗粒高度吸附在织物的顶层。通过将织物浸入苛刻的溶液中和对织物进行超声处理来研究超疏水涂层的耐用性。结果表明，超疏水织物具有很高的耐恶劣条件的能力。研究发现，纳米复合材料涂层织物具有良好的紫外线防护性能，特别是超疏水织物的紫外线防护性能提高了约 80%，与未涂层织物相比。细菌附着结果表明，壳聚糖和 TiO 的结合对大肠杆菌和金黄色葡萄球菌具有高抗菌性能。一旦将超疏水性诱导到织物上，大肠杆菌和金黄色葡萄球菌的细菌减少率分别进一步提高到 99.8%和 97.3%。开发的纳米复合材料涂层织物具有在医院相关应用中用作抗菌和自清洁服装的潜在应用前景。
