Effect of KAOLIN (cas 1332-58-7) content and sonication on the properties of wheat gluten composites

Add time:08/17/2019    Source:sciencedirect.com

Wheat gluten composites with KAOLIN (cas 1332-58-7) were prepared using compression molding, in the presence of glycerol as a plasticizer. The influences of kaolin content (0, 2.5, 5.0, 7.5, 10, 12.5 and 15.0 wt%) and probe sonication on the water resistance, degradation, mechanical, thermal and morphological properties of a wheat gluten-based bioplastic was investigate. The results showed that the mechanical properties of the wheat gluten-based bioplastic were significantly improved by the incorporation of kaolin. Scanning electron microscope (SEM) images revealed that, in comparison with a wheat gluten composite containing the same amount of non-sonicated kaolin, sonication effectively improved the dispersion of kaolin in the wheat gluten matrix, increasing tensile strength, thermal stability and water resistance. Also, sonicated kaolin could delay the degradation process of the wheat gluten-based bioplastic, indicating the potential agricultural application of these composites in the controlled release of the active contents of fertilizers.

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