Abstract
This research assessed the effect of 60Co irradiation and polymer concentration on the wettability of coating-forming solutions (CFS) of chitosan as function of the surface properties of red tilapia (Oreochromis spp.), showing the utility of wettability in the optimization of the CFS formulation. The wettability of red tilapia skin, a low energy surface, was estimated by the Zisman’s method. The red tilapia skin presented a surface tension of 84.26 mN/m, with polar and dispersive components of 81.92 and 2.34 mN/m, respectively. The value of critical surface tension was 84.09 mN/m. The rise of irradiation doses increased the wettability coefficient. The optimum value of the spreading coefficient (-2.6 mN/m) was achieved with CFS at 1.5% (w/v) of chitosan irradiated at 50 kGy and 0.1% of Tween 80 (v/v). Important information about the application of CFS on fish have been obtained, which possibly might contribute in the improvement of their durability.
Original language | English |
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Title of host publication | Natural Polymers |
Subtitle of host publication | Derivatives, Blends and Composites |
Publisher | Nova Science Publishers, Inc. |
Pages | 103-118 |
Number of pages | 16 |
Volume | 2 |
ISBN (Electronic) | 9781536104400 |
ISBN (Print) | 9781536104264 |
State | Published - 1 Jan 2017 |
Bibliographical note
Publisher Copyright:© 2017 Nova Science Publishers, Inc.
Keywords
- Biodegradable coating
- Chitosan
- Irradiation
- Oreochromis spp
- Red tilapia
- Surface properties