Hydrogel-MWCNT nanocomposites: Synthesis, characterization, and heating with radiofrequency fields

Nitin S. Satarkar, Don Johnson, Brock Marrs, Rodney Andrews, Churn Poh, Belal Gharaibeh, Kozo Saito, Kimberly W. Anderson, J. Zach Hilt

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

Hydrogel nanocomposites are attractive biomaterials for numerous applications including tissue engineering, drug delivery, cancer treatment, sensors, and actuators. Here we present a nanocomposite of multiwalled carbon nanotubes (MWCNT) and temperature responsive N-isopropylacrylamide hydrogels. The lower critical solution temperature (LCST) of the nanocomposites was tailored for physiological applications by the addition of varying amounts of acrylamide (AAm). The addition of nanotubes contributed to interesting properties, including tailorability of temperature responsive swelling and mechanical strength of the resultant nanocomposites. The mechanical properties of the nanocomposites were studied over a range of temperatures (25-55°C) to characterize the effect of nanotube addition. A radiofrequency (RF) field of 13.56 MHz was applied to the nanocomposite discs, and the resultant heating was characterized using infrared thermography. This is the first report on the use of RF to remotely heat MWCNThydrogel nanocomposites.

Original languageEnglish
Pages (from-to)1813-1819
Number of pages7
JournalJournal of Applied Polymer Science
Volume117
Issue number3
DOIs
StatePublished - Aug 1 2010

Keywords

  • Carbon nanotubes
  • Hydrogels
  • Nanocomposites
  • Radiofrequency
  • Temperature responsive

ASJC Scopus subject areas

  • Chemistry (all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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