Precise control of surface physicochemical properties for electrospun fiber mats by surface-initiated radical polymerization

Takahiro Yano, Weng On Yah, Hiroki Yamaguchi, Yuki Terayama, Masamichi Nishihara, Motoyasu Kobayashi, Atsushi Takahara

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Non-woven fiber mats were fabricated with the electrospinning method using poly(methyl methacrylate)-co-poly(2-(2-bromoisobutyryloxy)ethyl methacrylate) in various solvents. The surface morphology of the electrospun fibers depended on the solvent vapor pressure and polymer concentration. Surface-initiated atom transfer radical polymerization (ATRP) with 3-(N-2-methacryloyloxyethyl-N,N- dimethyl) ammonatopropanesulfonate), 2-hydroxyethyl methacrylate or 2-(perfluorooctyl)ethyl acrylate generated surface-grafted polymers, as determined by X-ray photoelectron spectroscopy. Scanning electron microscopic observation revealed that the apparent fiber morphology did not change upon modification. The atomic force microscopic images of the grafted fiber cross-sections indicated that monomers and solvents penetrated slightly into the fibers and polymerization occurred at both internal and external initiation sites. Physicochemical properties, such as contact angle, hydrophobicity and hydrophilicity, and wettability, could be altered by the proper selection of substrates (spin-coated flat films or the variously prepared non-woven fiber mats). We have successfully prepared hydrophilic and hydrophobic fiber surfaces by a combination of the electrospinning protocol and surface-initiated ATRP.

Original languageEnglish
Pages (from-to)838-848
Number of pages11
JournalPolymer Journal
Volume43
Issue number10
DOIs
Publication statusPublished - Oct 2011

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

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