Preparation and characterization of antibacterial cobalt-exchanged natural zeolite/poly(vinyl alcohol) hydrogels

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NARİN G., Albayrak Ç. B., Ülkü S.

Journal of Sol-Gel Science and Technology, vol.69, no.1, pp.214-230, 2014 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 69 Issue: 1
  • Publication Date: 2014
  • Doi Number: 10.1007/s10971-013-3206-3
  • Journal Name: Journal of Sol-Gel Science and Technology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.214-230
  • Keywords: Antibacterial, Characterization, Composite, Hydrogel, Natural zeolite, Poly(vinyl alcohol)
  • Uşak University Affiliated: Yes

Abstract

In the present study, potential application of the local clinoptilolite-rich natural zeolite in formulation of antibacterial hydrogels was investigated. The zeolite powder exchanged with cobalt(II) ions was used in preparation of the zeolite/poly(vinyl alcohol) hydrogel films in different amounts. The films were physically crosslinked by the freezing-thawing method and characterized for their crystallinity, surface and cross sectional morphology, chemical composition, thermal behaviour, mechanical properties, swelling and dissolution behaviours, and antibacterial activities against a Gram-negative bacteria. The films with 0.48 wt% and higher cobalt-exchanged zeolite contents showed antibacterial activity. Addition of the zeolite powder in the formulations did not cause significant changes in the other properties of the films. © 2013 Springer Science+Business Media New York.