Rheological properties of a β-1,3-polyglucuronic acid derivative from 4-acetamido-TEMPO-mediated oxidation of curdlan
| Autor: | Li-Xia Wu, Zhi-Chao Ding, Wu-Dan Cai, Jing-Kun Yan, Wen-Yi Qiu, Yao-Yao Wang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Arrhenius equation
Shear thinning Rheometry General Chemical Engineering 04 agricultural and veterinary sciences General Chemistry Curdlan Dynamic mechanical analysis Activation energy 040401 food science chemistry.chemical_compound symbols.namesake 0404 agricultural biotechnology chemistry Rheology Dynamic modulus Polymer chemistry symbols Physical chemistry |
| Zdroj: | RSC Adv.. 7:50441-50448 |
| ISSN: | 2046-2069 |
| Popis: | The rheological properties of a carboxylic curdlan bearing a β-1,3-polyglucuronic acid structure were investigated as a function of concentration and temperature. Carboxylic curdlan solutions exhibited shear thinning behavior that became more evident with increasing concentration. This behavior was further described by a consistent index (k) and a flow behavior index (n) based on the power law model. Activation energy (Ea) decreased with increasing concentration, as calculated by the Arrhenius rule. The mechanical spectra of carboxylic curdlan were classified as dilute solution ( |
| Databáze: | OpenAIRE |
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