Abstract: Air filtration media including synthetic and cellulose fiber layers are provided. More particularly, the air filtration media have high initial efficiency with improved durability, fire retardance, anti-microbial activity, and moisture resistance. The air filtration media can be used in air filters for a variety of applications.

Abstract: Nonwoven materials having at least one layer are provided, as well as their use in cleaning articles. More particularly, the nonwoven materials can comprise modified cellulose fibers. The modified cellulose fibers can repel a sanitizing agent, such as a quaternary ammonium compound, from the surface of the nonwoven material. The nonwoven material including modified cellulose fibers can also have improved antimicrobial properties. The modified cellulose fibers can contain aluminum that is fixed to the fibers such that it does not leach when the nonwoven materials are stored in a liquid environment.