| Autor: |
Deka, Bhanita1 (AUTHOR), Chakravorty, Prostuti1 (AUTHOR), Das, Amit Baran1 (AUTHOR) amitbaran84@gmail.com |
| Předmět: |
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| Zdroj: |
Journal of Polymers & the Environment. Feb2024, Vol. 32 Issue 2, p632-640. 9p. |
| Abstrakt: |
The study aimed to develop eutectogel from jackfruit seed starch using natural deep eutectic solvents (NADES). The dissolution behaviours of the starch were studied with ten types of NADES. The starch was completely dissolved in fructose, glucose, and malic acid-based NADES and thus these were chosen for eutectogel. The eutectogel with malic acid and fructose NADES showed the highest density (2150 kg/m2) and conductivity (0.25 S/m) as well as low syneresis (2.6%). Thermal characteristics showed that the presence of NADES significantly lowered the peak, melting, and conclusion temperatures of the gel. The peak force of the gel was decreased significantly (p ≤ 0.05) in the presence of NADES, from 20.24 N to 0.08 N for samples with NADES. When the temperature was changed from 80°C to 20°C, the sol-to-gel transformation showed higher G' values than the G" values, indicating viscoelastic behavior. The temperature-dependent flow behaviour was effectively explained by the Arrhenius Eq. (0.805 ≤ R2 ≤ 0.990) and the Eyring-Polanyi Eq. (0.822 ≤ R2 ≤ 0.994). The enthalpy (∆H), entropy (∆S), and activation energy (Ea) during sol-to-gel transformation varied markedly and decreased with increased NADES concentration due to enhanced fluidity. The study showed an approach for utilizing jackfruit seed starch and developing conductive eutectogel with flexible properties. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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Full text from SpringerLink