Influence of thickness on properties of plasticized oat starch films
Braz. arch. biol. technol
;
56(4): 637-644, July-Aug. 2013. graf, tab
Article
in English
| LILACS
| ID: lil-684516
ABSTRACT
The aim of this study was to investigate the effect of thickness (between 80 and 120 µm) on apparent opacity, water vapor permeability and mechanical properties (tensile and puncture) of oat starch films plasticized with glycerol, sorbitol, glycerolsorbitol mixture, urea and sucrose. Films were stored under 11, 57, 76 and 90% relative humidity (RH) to study the mechanical properties. It was observed that the higher the thickness, the higher was the opacity values. Films without the plasticizer were more opaque in comparison with the plasticized ones. Glycerolsorbitol films presented increased elongation with increasing thickness at all RH. Puncture force showed a strong dependence on the film thickness, except for the films plasticized with sucrose. In general, thickness did not affect the water permeability.
Full text:
Available
Index:
LILACS (Americas)
Language:
English
Journal:
Braz. arch. biol. technol
Journal subject:
Biology
Year:
2013
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Embrapa Agroindústria de Alimentos/BR
Similar
MEDLINE
...
LILACS
LIS