With the improvement of living standards, people are paying more and more attention to health problems. The antibacterial function of fabrics is therefore of great importance. The structural color(photonic crystal), w...With the improvement of living standards, people are paying more and more attention to health problems. The antibacterial function of fabrics is therefore of great importance. The structural color(photonic crystal), which has been widely investigated and applied on fabric dyeing, contains a large number of hollow microstructure and functional groups, and is easy to be modified and functionalized. Therefore, an innovative way of endowing structural color dye on fabrics with antibacterial property was presented in this paper. The latex spheres and zinc pyrrolidone were co-assembled on polydopamine modified fabrics, antibacterial ion zinc pyrrolidone was therefore loaded into the pores of structural color dye, and brilliant antibacterial fabrics were successfully achieved. The existence of zinc pyrrolidone had little influence on the color saturation of brilliant structural color and meanwhile ensured the structural color dye excellent antibacterial effect. The antibacterial reduction rate of the antibacterial fabric reached 99.99%. Owing to the addition of polyurethane(PUA) coating on the surface of structural color, the fabric modified by the antibacterial structural color dye also presented good washing resistance, which showed great application possibility in functional textile and antibacterial fields.展开更多
The current SARS-CoV-2 pandemic has resulted in the widespread use of personal protective equipment,particularly face masks.However,the use of commercial disposable face masks puts great pressure on the environment.In...The current SARS-CoV-2 pandemic has resulted in the widespread use of personal protective equipment,particularly face masks.However,the use of commercial disposable face masks puts great pressure on the environment.In this study,nano-copper ions assembled cotton fabric used in face masks to impart antibacterial activity has been discussed.To produce the nanocomposite,the cotton fabric was modified by sodium chloroacetate after its mercerization,and assembled with bactericidal nano-copper ions(about 10.61 mg·g^(–1))through electrostatic adsorption.It demonstrated excellent antibacterial activity against Staphylococcus aureus and Escherichia coli because the gaps between fibers in the cotton fabric allow the nano-copper ions to be fully released.Moreover,the antibacterial efficiency was maintained even after 50 washing cycles.Furthermore,the face mask constructed with this novel nanocomposite upper layer exhibited a high particle filtration efficiency(96.08%±0.91%)without compromising the air permeability(28.9 min·L^(–1)).This green,economical,facile,and scalable process of depositing nano-copper ions onto modified cotton fibric has great potential to reduce disease transmission,resource consumption,and environmental impact of waste,while also expanding the range of protective fabrics.展开更多
基金National Nature Science Foundation of China(No.51503034)Science and Technology Commission of Shanghai Municipality for Yangfan Program,China(No.15YF1400700)。
文摘With the improvement of living standards, people are paying more and more attention to health problems. The antibacterial function of fabrics is therefore of great importance. The structural color(photonic crystal), which has been widely investigated and applied on fabric dyeing, contains a large number of hollow microstructure and functional groups, and is easy to be modified and functionalized. Therefore, an innovative way of endowing structural color dye on fabrics with antibacterial property was presented in this paper. The latex spheres and zinc pyrrolidone were co-assembled on polydopamine modified fabrics, antibacterial ion zinc pyrrolidone was therefore loaded into the pores of structural color dye, and brilliant antibacterial fabrics were successfully achieved. The existence of zinc pyrrolidone had little influence on the color saturation of brilliant structural color and meanwhile ensured the structural color dye excellent antibacterial effect. The antibacterial reduction rate of the antibacterial fabric reached 99.99%. Owing to the addition of polyurethane(PUA) coating on the surface of structural color, the fabric modified by the antibacterial structural color dye also presented good washing resistance, which showed great application possibility in functional textile and antibacterial fields.
基金This work was financially supported by the Foundation of State Key Laboratory of Biobased Material and Green Papermaking(Grant No.GZKF202131)Qilu University of Technology,Shandong Academy of Sciences,and High-level Foreign Experts Project(Grant No.GDT20186100425).
文摘The current SARS-CoV-2 pandemic has resulted in the widespread use of personal protective equipment,particularly face masks.However,the use of commercial disposable face masks puts great pressure on the environment.In this study,nano-copper ions assembled cotton fabric used in face masks to impart antibacterial activity has been discussed.To produce the nanocomposite,the cotton fabric was modified by sodium chloroacetate after its mercerization,and assembled with bactericidal nano-copper ions(about 10.61 mg·g^(–1))through electrostatic adsorption.It demonstrated excellent antibacterial activity against Staphylococcus aureus and Escherichia coli because the gaps between fibers in the cotton fabric allow the nano-copper ions to be fully released.Moreover,the antibacterial efficiency was maintained even after 50 washing cycles.Furthermore,the face mask constructed with this novel nanocomposite upper layer exhibited a high particle filtration efficiency(96.08%±0.91%)without compromising the air permeability(28.9 min·L^(–1)).This green,economical,facile,and scalable process of depositing nano-copper ions onto modified cotton fibric has great potential to reduce disease transmission,resource consumption,and environmental impact of waste,while also expanding the range of protective fabrics.
