Anisotropic swelling of hydrogel nanowires based on poly(vinylpyrrolidone) fabricated by single-particle nanofabrication technique

Satoshi Tsukuda, Masaaki Omichi, Masaki Sugimoto, Akira Idesaki, Vikas S. Padalkar, Shu Seki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We report a hydrogel nanowire based on poly(vinylpyrrolidone) (PVP) and N,N'-methylenebis(acrylamide) (MBA), which have anisotropic swelling ratio for radius and length direction. The PVP/MBA nanowires were fabricated by single particle nanofabrication technique, which is a technique for the fabrication of polymeric nanowires using the single ion event, that cause the crosslinking reaction of polymer chains within the ion tracks along the ion paths; furthermore the size (length and radius) of the nanowires was controlled by changing the film thickness and amount of MBA crosslinker. The swelling behaviors in air and water were observed using atomic force microscopy. The PVP/MBA nanowires exhibited anisotropic swelling along the length and radius in aqueous environments, because the hydrogel nanowires consisted of crosslinked networks with inhomogeneous crosslinking points, which reflected the initial energy distribution from incident an ion within the ion track.

Original languageEnglish
Pages (from-to)1950-1956
Number of pages7
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume54
Issue number19
DOIs
Publication statusPublished - 2016 Oct 1

Keywords

  • hydrogels
  • nanotechnology
  • radiation
  • swelling

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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