Department of Chemistry, The University of Lahore, Lahore, Pakistan.
Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan.
Int J Biol Macromol. 2023 Dec 31;253(Pt 2):126813. doi: 10.1016/j.ijbiomac.2023.126813. Epub 2023 Sep 9.
Antibacterial, durable and smart cotton fabrics was developed using chitosan-based formulation. The cellulose was covalently cross-linked with chitosan using TEOF. The antibacterial activity of prepared smart fabrics and CS was studied against S. aureus and E. coli strains. The FTIR, SEM and XRD were employed to confirm the linkage of CS molecules with cellulose in cotton fabrics. The CS of 160 KDa extracted from shrimp shell showed the optimum antibacterial activity. The prominent asymmetric, symmetric alkyl CH peaks of CS were shifted to 2930 and 2845 (cm), respectively. Moreover, the shifted peaks at 1590 and 1400 (cm) indicate the CO stretching and NH bending bands of CS, respectively. This confirm the existence of new imine functional group that was generated after cross-linking of NH groups of CS. The SEM results showed more uniform morphology of TEOF cross-linked fabrics versus CS coated fabrics, which revealed a promising microbial growth inhibition activity. The TEOF as a cross-linker has been unveiled, showcasing the effectiveness of this innovative crosslinking approach. The fabric treated with cross-linked CS exhibited remarkable antibacterial properties that endured even after undergoing 30 washing cycles. These antibacterial textiles possess substantial commercial potential across a diverse range of industries.
采用壳聚糖基制剂开发了具有抗菌、耐用和智能功能的棉织物。使用四氧化三乙烯将纤维素与壳聚糖共价交联。研究了制备的智能织物和 CS 对金黄色葡萄球菌和大肠杆菌菌株的抗菌活性。采用 FTIR、SEM 和 XRD 证实了 CS 分子与棉织物中纤维素的连接。从虾壳中提取的分子量为 160 kDa 的 CS 表现出最佳的抗菌活性。CS 的不对称、对称烷基 CH 峰分别移至 2930 和 2845（cm）。此外，在 1590 和 1400（cm）处的偏移峰分别表示 CS 的 CO 伸缩和 NH 弯曲带。这证实了新的亚胺官能团的存在，该官能团是 CS 的 NH 基团交联后产生的。SEM 结果表明，与 CS 涂层织物相比，TEOF 交联织物具有更均匀的形态，这表明其具有有希望的微生物生长抑制活性。作为交联剂的 TEOF 已被揭示，展示了这种创新交联方法的有效性。经过交联 CS 处理的织物表现出显著的抗菌性能，即使经过 30 次洗涤循环后仍能保持。这些抗菌纺织品在各个行业都具有巨大的商业潜力。
