Physical Adsorption of Dimethylolethyleneurea on Cotton Cellulose
| Autor: | H.R. Chipalkatti, S.B. Patel, N.T. Baddi |
|---|---|
| Rok vydání: | 1971 |
| Předmět: |
010302 applied physics
Exothermic reaction Aqueous solution Polymers and Plastics Enthalpy 02 engineering and technology Conductivity 021001 nanoscience & nanotechnology 01 natural sciences Solvent chemistry.chemical_compound symbols.namesake Adsorption chemistry Chemical engineering 0103 physical sciences Van 't Hoff factor symbols Chemical Engineering (miscellaneous) Cellulose 0210 nano-technology |
| Zdroj: | Textile Research Journal. 41:153-158 |
| ISSN: | 1746-7748 0040-5175 |
| DOI: | 10.1177/004051757104100211 |
| Popis: | Equilibrium adsorption isotherms obtained at 20, 30, 40, and 50°C for dimethylolethyleneurea (DMEU) on cotton fiber from aqueous solutions are characterized by an initial smooth-rising portion, followed by a sharp decrease and nega tive adsorption of DMEU. Data on conductivity and freezing-point depression of water DMEU solutions indicated that the maximum in the adsorption isotherms stem from the associative property of DMEU molecules. The exothermic affinity, enthalpy, entropy, and limiting coarea for the equilibrium adsorption of DMEU are evaluated. From the negative adsorption, the amounts of nonsolvent water preferentially adsorbed at different temperatures are calculated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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