Electrospinning cellulose acetate nanofibers and a study of their possible use in high-efficiency filtration

Abstract

Cellulose acetate was dissolved in trifluoroacetic acid and electrospun onto polypropylene non-woven material. An upstream layer of polypropylene non-woven material was added to form a three-layered polypropylene/cellulose acetate/polypropylene filter. The thickness of the electrospun cellulose acetate layer was varied by changing the electrospinning time. The fabricated filter was then characterized. Cellulose acetate nanofibers were also electrospun onto an aluminum foil collector with the aim of studying the changes in fiber properties when they are electrospun onto the polypropylene non-woven material. The results obtained in this research work indicated that the layer of nanofibers electrospun onto polypropylene non-woven material increased the filtration efficiency of polypropylene non-woven material from 50.23% to 91.29%, but the quality factor reduced by 29.1%. When the cellulose acetate deposition time was increased from 3 h to 6 h, the filtration efficiency further increased to 98.26% and the quality factor increased by 0.6%. A comparison between cellulose acetate nanofibers electrospun using an aluminum foil as the collector and those electrospun directly onto the polypropylene non-woven material indicated that cellulose acetate fibers electrospun onto polypropylene non-woven material had poorer fiber quality properties.

Thin films of cellulose acetate nanofibers from cigarette butt waste

“…The diameters are lower than those reported in the literature. [42][43][44] The SEM images show the presence of defects with circular shape. The beads have a size of 255-490 nm.…”

“…The smaller nanofibers had a diameter that is lower than some values reported in the literature. 42,43,46 It is reported that nanofibers of small diameter form efficient filters. 43,47 There are some defects on the sample, having the form of a circle.…”

Electrospun cellulose acetate nanofibers and Au@AgNPs for antimicrobial activity - A mini review

“…CA has been blend electorspun with natural polymers and nanomaterials such as AgNPs etc. Studying to cellulose, cellulose CA has better dissolvableness therefore, different solvents system are available [30,46,47].…”

Preparation of Nanofibers with Renewable Polymers and Their Application in Wound Dressing

“…It can also selectively absorb low-level organic compounds and toxins. However, CA has poor mechanical properties [43]. Khalf et al fabricated a CA/polycaprolactone (PCL) core-sheath nanostructure by coaxial electrospinning to promote its mechanical and biological properties.…”