Mechanical thermal and structural properties of rice starch films reinforced with rice starch nanocrystals


Citation

Piyada K, . and Waranyou S., . and Thawien W, . Mechanical thermal and structural properties of rice starch films reinforced with rice starch nanocrystals. pp. 439-449. ISSN 22317546

Abstract

A rice starch based film reinforced with starch nanocrystals (prepared by submitting native granules of rice starch to acid hydrolysis at 40 oC) was prepared by casting film-solution on leveled trays. The influence of the content of starch nanocrystals (5 to 30) on the mechanical thermal and structural properties of rice starch films was investigated. The rice starch films showed an increase in tensile strength but decreasing elongation at break and water barrier properties with the addition of rice starch nanocrystals. The addition of starch nanocrystals increased the crystalline peak structure of rice starch film. However too high starch nanocrystals content resulted in a decreased crystallinity of the resulting film. The behavior of the thermal properties of rice starch films reinforced with starch nanocrystals was investigated by means of dynamic mechanical thermal analysis differential scanning calorimeter and thermogravimetric analysis. No endothermic peaks were observed in the glass transition temperature (Tg) of the rice starch film. However increasing endothermic heat flow was observed when addition and increasing of starch nanocrystals in rice starch films. This can restrict the mobility of the starch chain due to the establishment of strong interactions between rice starch and starch nanocrystals. In addition a lower content of starch nanocrystals showed smoother than high starch nanocrystals in a rice starch film matrix.


Download File

Full text available from:

Abstract

A rice starch based film reinforced with starch nanocrystals (prepared by submitting native granules of rice starch to acid hydrolysis at 40 oC) was prepared by casting film-solution on leveled trays. The influence of the content of starch nanocrystals (5 to 30) on the mechanical thermal and structural properties of rice starch films was investigated. The rice starch films showed an increase in tensile strength but decreasing elongation at break and water barrier properties with the addition of rice starch nanocrystals. The addition of starch nanocrystals increased the crystalline peak structure of rice starch film. However too high starch nanocrystals content resulted in a decreased crystallinity of the resulting film. The behavior of the thermal properties of rice starch films reinforced with starch nanocrystals was investigated by means of dynamic mechanical thermal analysis differential scanning calorimeter and thermogravimetric analysis. No endothermic peaks were observed in the glass transition temperature (Tg) of the rice starch film. However increasing endothermic heat flow was observed when addition and increasing of starch nanocrystals in rice starch films. This can restrict the mobility of the starch chain due to the establishment of strong interactions between rice starch and starch nanocrystals. In addition a lower content of starch nanocrystals showed smoother than high starch nanocrystals in a rice starch film matrix.

Additional Metadata

[error in script]
Item Type: Article
AGROVOC Term: Rice
AGROVOC Term: Starch
AGROVOC Term: Mechanical properties
AGROVOC Term: Thermal properties
AGROVOC Term: Films
AGROVOC Term: Environmental protection
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:27
URI: http://webagris.upm.edu.my/id/eprint/21749

Actions (login required)

View Item View Item
Agris UPM is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.