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Effect of clay content, homogenization RPM, pH, and ultrasonication on mechanical and barrier properties of fish gelatin/montmorillonite nanocomposite films
- Authors
- Bae, Ho J.; Park, Hyun J.; Hong, Seung I.; Byun, Young J.; Darby, Duncan O.; Kimmel, Robert M.; Whiteside, William S.
- Issue Date
- 7월-2009
- Publisher
- ELSEVIER
- Keywords
- Fish gelatin; Nanoclay; Film; Ultrasonication; Biopolymer
- Citation
- LWT-FOOD SCIENCE AND TECHNOLOGY, v.42, no.6, pp.1179 - 1186
- Indexed
- SCIE
SCOPUS
- Journal Title
- LWT-FOOD SCIENCE AND TECHNOLOGY
- Volume
- 42
- Number
- 6
- Start Page
- 1179
- End Page
- 1186
- ISSN
- 0023-6438
- 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 x 10(-6) 0.7 x 10(-6) g m/m(2) dayatm to 114.4 x 10(-6) +/- 16.2 x 10(-6) g m/m(2) day atm and the water vapor permeability decreased from 31.2 X 10(-3) +/- 1.6 x 10(-3) ng m/m(2) s Pa to 8.1 X 10(-3) +/- 0.1 X 10(-3) ng m/m(2) s Pa. The XRD and TEM observation suggested that the ultrasonication treatment (30 min at 40% output) resulted in exfoliation of the silicates. (C) 2008 Published by Elsevier Ltd.
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