Moisture Absorption Behavior and Morphology of Thermoplastic Starch via Ascorbic Acid Hydrolysis Technique
| Autor: | A.W.M. Kahar, Amirah Hulwani Mohd Zain |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Thermoplastic Morphology (linguistics) Moisture absorption Starch 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Ascorbic acid 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Hydrolysis chemistry.chemical_compound Degree of substitution chemistry Chemical engineering Organic chemistry General Materials Science 0210 nano-technology |
| Zdroj: | Solid State Phenomena. 264:148-151 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.264.148 |
| Popis: | The effect of modified thermoplastic starch (TPS) with organic acid was studied. In presence of ascorbic acid (AATPS) and glycerol (GTPS) along with mechanical process, a native starch granule was transform into a continuous phase as shown by scanning electron microscopy (SEM). Reaction of ascorbic acid (AA) with starch induced to the formation of the ester bond, which improved moisture resistivity of TPS was proven by the determination degree of substitution (DS) and moisture absorption test. The formation of ester bond was identified by using FTIR analysis. The DS values were ranging from 0 to 0.052, respectively, with the increase of AA content. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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