Effect of clay content, homogenization RPM, pH, and ultrasonication on mechanical and barrier properties of fish gelatin/montmorillonite nanocomposite films

Ho J. Bae, Hyun J. Park, Seung I. Hong, Young J. Byun, Duncan O. Darby, Robert M. Kimmel, William S. Whiteside

    Research output: Contribution to journalArticlepeer-review

    126 Citations (Scopus)

    Abstract

    The effect of clay content, homogenization RPM, and pH on the mechanical and barrier properties of fish gelatin/nanoclay composite films was investigated. The addition of 5% nanoclay (w/w) increased the tensile strength from 30.31 ± 2.37 MPa to 40.71 ± 3.30 MPa. The 9 g clay/100 g gelatin film exhibited the largest improvements in oxygen and water barrier properties. Oxygen permeability decreased from 402.8 × 10-6 ± 0.7 × 10-6 g m/m2 day atm to 114.4 × 10-6 ± 16.2 × 10-6 g m/m2 day atm and the water vapor permeability decreased from 31.2 × 10-3 ± 1.6 × 10-3 ng m/m2 s Pa to 8.1 × 10-3 ± 0.1 × 10-3 ng m/m2 s Pa. The XRD and TEM observation suggested that the ultrasonication treatment (30 min at 40% output) resulted in exfoliation of the silicates.

    Original languageEnglish
    Pages (from-to)1179-1186
    Number of pages8
    JournalLWT
    Volume42
    Issue number6
    DOIs
    Publication statusPublished - 2009 Jul

    Keywords

    • Biopolymer
    • Film
    • Fish gelatin
    • Nanoclay
    • Ultrasonication

    ASJC Scopus subject areas

    • Food Science

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