Comparative study of the mixed-alkali effect in poly(ethylene oxide) and poly(propylene oxide)-thiocyanate salt systems
โ Scribed by Dale Teeters; Charisse M. Hill
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 365 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0167-2738
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๐ SIMILAR VOLUMES
Ah&r&-Ionic association in complexes of poly(propylene oxide) with alkali metal salts of thiocyanate, fluoroborate, and perchlorate anions was studied with Raman scattering and infrared transmission spectroscopy, Thiocyanate complexes are strongly coordinated through the nitrogen end of the anion. C
When dissolved in poly(ethylene oxide) (PEO), the alkali metal imides LiN(CF,SO,), (LiTFSI), NaN(CF,SO,), (NaTFSI) and KN(CF,SO,), (KTFSI) yield rubbery electrolytes over a wide range of concentrations at T > 50ยฐC. Both the glass transition temperature (T,) and the dc bulk conductivity of these elec
In addition to associating into (''normal'') micelles in aqueous blocks (1). Many of these copolymers associate in aqueous solutions, amphiphilic polyoxyalkylene block copolymers can form solutions to form spherical micelles (with a ''core'' made ''reverse'' micelles in organic solvents at sufficien
Studies were performed to examine the effect of ionic salts on phase transitions, dissolution rates, and diffusion coefยฎcients of water in gels of poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) with polymer concentrations ranging from 22 to 32% w/w and salt concentrations rangin
## Abstract **Summary:** The effects of PEO concentration, addition of PEG of various molecular weights (1โ000โ35โ000 gโยทโmol^โ1^), inorganic salt of various types (i.e., NaCl, LiCl, KCl, MgCl~2~, and CaCl~2~), or SDS, and the solvent system (i.e., mixed solvents of distilled water and methanol, et