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 language | English |
|---|---|
| Pages (from-to) | 1179-1186 |
| Number of pages | 8 |
| Journal | LWT |
| Volume | 42 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2009 Jul |
Keywords
- Biopolymer
- Film
- Fish gelatin
- Nanoclay
- Ultrasonication
ASJC Scopus subject areas
- Food Science
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