We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Antibacterial and antiviral chitosan oligosaccharide modified cellulosic fibers with durability against washing and long-acting activity
Summary
Researchers modified cotton fibers with chitosan oligosaccharide using a two-step grafting process, producing fabrics with 100% antibacterial efficacy against E. coli and S. aureus and 99% antiviral activity against bacteriophage MS2 that remained durable after 20 wash cycles, with potential applications in sustainable protective equipment.
The worldwide outbreak of SARS-CoV-2 has attracted extensive attention to antibacterial and antivirus materials. Cellulose is the most potential candidate for the preparation of green, environmentally friendly antibacterial and antiviral materials. Herein, modified cellulosic fibers with sustained antibacterial and antiviral performance was prepared by introducing chitosan oligosaccharide onto the fibers. The two-step method is proved to be more effective than the one-step method for enhanced chitosan oligosaccharide loadings and antibacterial and antiviral activity. In this instance, the modified fibers with 61.77 mg/g chitosan oligosaccharide loadings can inhibit Staphylococcus aureus and Escherichia coli by 100 % after contacting with bacteria for 12 h and reduce the bacteriophage MS2 by 99.19 % after 1 h of contact. More importantly, the modified fibers have washing durable antibacterial and antiviral activity; the modified fibers have 100 % antibacterial and 98.38 % antiviral activity after 20 washing cycles. Benefiting from the excellent performance of the individual fibers, the paper prepared from the modified fibers show great antibacterial (100 %) and antiviral performance (99.01 %) and comparable mechanical strength. The modified fibers have potential applications in the manufacture of protective clothing and protective hygiene products.
Sign in to start a discussion.
More Papers Like This
Facile Fabrication of Highly Efficient Chitosan-Based Multifunctional Coating for Cotton Fabrics with Excellent Flame-Retardant and Antibacterial Properties
Researchers developed an eco-friendly chitosan-based coating for cotton fabrics that provides both flame-retardant and antibacterial properties. The coating was created by protonating chitosan with amino trimethylene phosphonic acid in a high atom-economy process. The study demonstrates a sustainable alternative to synthetic fabric treatments that could help reduce the release of harmful microplastic fibers from conventional coated textiles.
Influence of Cross-Linkers on the Wash Resistance of Chitosan-Functionalized Polyester Fabrics
Researchers evaluated how different cross-linkers affect the wash resistance of chitosan-functionalized polyester textiles, finding that cross-linker chemistry determines how well the antimicrobial chitosan coating withstands repeated laundering.
Design of Chitosan-Polyester Composites to Reduce Particulate Contamination of Washing Wastewater
Researchers modified polyester fabrics with chitosan biopolymer coatings to reduce the amount of microplastic fibers shed during washing. Chitosan-treated fabrics released significantly fewer fiber particles, offering a practical approach to reducing microplastic pollution from laundry — a major source of aquatic microfiber contamination.
Recent Advances in Superhydrophobic and Antibacterial Cellulose-Based Fibers and Fabrics: Bio-inspiration, Strategies, and Applications
Researchers review fabrication strategies for superhydrophobic and antibacterial cellulose fabrics, covering surface micro/nanostructure construction, chemical modification, and antimicrobial agent integration — and discuss how liquid-repellent surfaces reduce bacterial adhesion as a sustainable alternative to synthetic polymer textiles.
Intrafibrillar Dispersion of Cuprous Oxide (Cu2O) Nanoflowers within Cotton Cellulose Fabrics for Permanent Antibacterial, Antifungal and Antiviral Activity
Researchers developed a method to embed cuprous oxide nanoflowers within cotton cellulose fibers, achieving permanent antibacterial, antifungal, and antiviral activity that withstands repeated washing, unlike conventional surface-adsorption approaches.