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| Titel: |
EFFECTS OF GAMMA RADIATION ON A PLASTIC MATERIAL BASED ON BEAN PROTEIN |
| Auteur: |
Gonzalez, M. E. Salmoral, E. M. Traverso, K. Floccari, M. E. |
| Verschenen in: |
International journal of polymeric materials |
| Paginering: | Jaargang 51 (2002) nr. 8 pagina's 721-731 |
| Jaar: |
2002-08 |
| Inhoud: |
The effect of gamma radiation applied to a system used for the preparation of biodegradable plastics was studied. The system was composed of the proteins and glucopolysaccharides previously isolated from Phaseolus vulgaris beans, mixed with glycerol and water as plasticizers. The irradiation of mixtures with doses of 25, 50 and 100 kGy was carried out in two conditions: (a) before the compression molding process and (b) after mixtures were molded. When the maximum applied dose (100 kGy) was applied to mixtures before the molding process, the plastic product obtained presented a deformation reduction of 62%, while the water absorption capacity increased by 20%. When the previously molded products were submitted to gamma radiation, their tensile strength decreased by 20%. The observed effects were attributed to different water content in each mixture and the eventual possibility of rearrangements giving rise to different structural interactions among starch and protein chains. A comparative analysis of biodegradability between irradiated and non-irradiated products is being carried on, with no differences observed up to the present state of the experiments. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 9 gevonden artikelen
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