| Autor: |
Sittikijyothin, Wancheng, Khumduang, Khanaphit, Khounvilay, Keonakhone, Mongkholrattanasit, Rattanaphol |
| Zdroj: |
Key Engineering Materials; August 2019, Vol. 818 Issue: 1 p16-20, 5p |
| Abstrakt: |
The C. fistula gums in aqueous solutions clearly exhibited shear-thinning flow behavior at high shear rate, however, at higher concentrations, pronounced shear thinning was observed. The value of zero shear viscosity [h0] was predicted by fitting Cross model. A plotting of specific viscosity at zero shear rate (hsp0) against coil overlap parameter (C[h]) was shown the linear slope of dilute and simi-dilute as 1.43 and 4.10, respectively, which found the critical concentration (C*) about 7.08/[h]. While, the mechanical spectra in the linear viscoelastic region of gum solutions showed the typical shape for macromolecular solutions. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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