Preparation and characterization of self-assembled polyelectrolyte multilayered films on electrospun nanofibers

Bin Ding, Kouji Fujimoto, Seimei Shiratori

研究成果: Article査読

47 被引用数 (Scopus)

抄録

Self-assembled polyelectrolyte multilayered (PEM) films were fabricated on electrospun cellulose acetate (CA) nanofibers via the electrostatic layer-by-layer adsorption of oppositely charged poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA). The growth of PEM films on CA nanofibers was studied by regulating the pH value of polyelectrolyte solutions and the number of PAH/PAA bilayers. The composition and morphology of PEM films coated fibrous mats were examined by Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and atomic force microscopy. The results indicated that the growth of PEM films fabricated at a PAH pH of 7.5 and a PAA pH of 3.5 (PAH7.5/PAA3.5) was much quicker than that of films of PAH and PAA adsorbed at pH 5 (PAH5/PAA5). The CA nanofibers were embedded in the thick PAH7.5/PAA3.5 films. The average diameter of PAH5/PAA5 films coated fibers and average PAH5/PAA5 film thickness gradually increased with increasing the number of PEM bilayers. Moreover, the surface roughness of fibers was increased after deposition of PAH/PAA films.

本文言語English
ページ(範囲)23-28
ページ数6
ジャーナルThin Solid Films
491
1-2
DOI
出版ステータスPublished - 2005 11 22

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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