Thermodynamic properties of a diblock copolymer of poly(oxyethylene) and poly(oxypropylene) in aqueous solution
Apparent molar volumes, expansibilities, and adiabatic compressibilities have been determined by density and ultrasound velocity measurements, in the temperature range of 5-50 degrees C, of aqueous solutions of the diblock copolymer denoted P94E316, where E denotes oxyethylene, P denotes oxypropylen...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1992. - 20(2004), 20 vom: 28. Sept., Seite 8903-8 |
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| Weitere Verfasser: | , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2004
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article |
| Zusammenfassung: | Apparent molar volumes, expansibilities, and adiabatic compressibilities have been determined by density and ultrasound velocity measurements, in the temperature range of 5-50 degrees C, of aqueous solutions of the diblock copolymer denoted P94E316, where E denotes oxyethylene, P denotes oxypropylene, and the subscripts denote block lengths. The critical micelle concentration (cmc) was determined at 20 degrees C from ultrasound velocity data by an analytical method based on the Phillips definition of the cmc; it was impossible to use the method at other temperatures due to the high or low values of the cmc. Critical micelle temperatures were derived for different concentrations from ultrasound velocity measurements applying the same procedure as that for the cmc |
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| Beschreibung: | Date Completed 21.08.2006 Date Revised 21.09.2004 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |