TY  - JOUR
A1  - Fechner, Mabya
A1  - Kramer, Markus
A1  - Kleinpeter, Erich
A1  - Koetz, Joachim
T1  - Polyampholyte-modified ionic microemulsions
N2  - This paper is focused on the influence of added polyampholyte, namely poly(N,N;-diallyl-N,N;- dimethyl-alt-maleamic carboxylate) on the inverse micellar phase range of the pseudo-ternary system consisting of toluene-pentanol (1:1)/SDS/water in dependence on the pH value and the temperature. Investigations on phase behavior have revealed that a greater extension in direction to the water-rich corner can be found at pH 4 compared to pH 9. In order to understand changes in the microstructure, polymer-surfactant interactions in dependence on pH have been examined by means of diffusion-ordered spectroscopy, differential scanning calorimetry, as well as conductivity measurements. The results have proven that the present microemulsion consists of water-in-oil droplets, with the polyampholyte located more in the inner core of the water droplets at pH 9 rather than at the interphase of the surfactant film at pH 4.
Y1  - 2009
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/30116
UR  - http://www.springerlink.com/content/101551
SN  - 0303-402X
ER  -