Fabrication and application of novel two-dimensional nanowebs via electrospinning

Bin Ding, Chunrong Li, Dong Wang, Seimei Shiratori

Research output: Chapter in Book/Report/Conference proceedingChapter

4 Citations (Scopus)

Abstract

This chapter reviews our recent progress on the novel two-dimensional nanowebs by the optimization of processing parameters during electrospinning. Using high applied voltage and low relative humidity in chamber, the by-product of micro-sized defect films can be splitted into nanowebs due to the fast phase separation of the charged droplets which flight with high moving speed in electric field from capillary tip to collector. The electrospun fibers act as a support for the “fishnet-like” nanowebs comprising interlinked one-dimensional nanowires. The average diameter of the nanowires contained in typical nanowebs is about one order of magnitude smaller than that of conventional electrospun fibers. Nanowebs together with common electrospun nanofibers can be assembled into a three-dimensional fibrous mat. So far, nylon-6, polyacrylic acid (PAA), poly(vinyl alcohol) (PVA)/SiO2 nanoparticles, and PVA/zinc acetate have been found to have the possibility forming nanowebs. The formation, morphology, and area density of the nanowebs in electrospun fibrous mats are strongly affected by the applied voltage, ambient relative humidity, kinds of solvents, solution concentration and conductivity, and distance between capillary tip to collector. The expanded applications of electrospun fibers are expected due to the formation of nanowebs, such as the nano-sized controllable filters, high efficient catalysts, catalyst supporter, and sensors. The preliminary data showing that the sensitivity of PAA nanowebs to ammonia is 2.5 times higher than that of electrospun PAA nanofibers. Additionally, PAA nanowebs show much quicker absorption speed and larger capacities than that of PAA nanofibers during the ammonia absorption test.

Original languageEnglish
Title of host publicationNanotechnology
Subtitle of host publicationNanofabrication, Patterning and Self Assembly
PublisherNova Science Publishers, Inc.
Pages51-69
Number of pages19
ISBN (Electronic)9781617617713
ISBN (Print)9781606921623
Publication statusPublished - 2010 Jan 1
Externally publishedYes

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ding, B., Li, C., Wang, D., & Shiratori, S. (2010). Fabrication and application of novel two-dimensional nanowebs via electrospinning. In Nanotechnology: Nanofabrication, Patterning and Self Assembly (pp. 51-69). Nova Science Publishers, Inc..