Structure of aqueous solutions of amphiphilies: t-butyl alcohol and urea solutions
β Scribed by Hideki Tanaka; Koichiro Nakanishi
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 552 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0378-3812
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π SIMILAR VOLUMES
Segment-segment interaction of poly(methylmethacrylate) in t-butyl alcohol-water mixtures in poor solvent regime was studied. From the small-angle X-ray scattering measurements of semidilute solution range, the binary and ternary cluster integrals of polymer segments were determined from concentrati
Self-diffusion coefficients of tert-butanol and n-propanol have been measured in water-rich regions of solutions containing urea at 25Β°C. Hydrodynamic radii of both alcohols have been calculated for varying concentrations of alcohol and urea. Hydrophobic hydration causes the formation of stable mole
It is suggested, when working with drug-urea-water systems, that more than passing consideration be given to the effect or effects produced by addition of a fourth component, as, for example, when an acid is used to adjust pH. Data are cited which indicate that these effects are measurable and often
The heats of dilution of ternary aqueous solutions of urea and alcohols have been determined at 25OC. From the experimental data the values of the excess enthalpies Hfj and of the pair enthalpy interaction coefficients h.. have been iJ evaluated and compared with the data reported in the literature.
## Abstract **Summary:** Rapid dissolution of cellulose in LiOH/urea and NaOH/urea aqueous solutions was studied systematically. The dissolution behavior and solubility of cellulose were evaluated by using ^13^C NMR, optical microscopy, wideβangle Xβray diffraction (WAXD), FTβIR spectroscopy, DSC,