Cloud points in ionic surfactant solutions
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چکیده
2014 Experimental evidence is herein given of lower critical solution temperatures in high salt aqueous solutions of cetylpyridinium and cetyltrimethylammonium bromide, nitrate and chlorate. The critical behaviour of the solutions is followed using static and dynamic light scattering. The unique feature of this transition lies in the unusually large values of the correlation length 03BE (> 103 A) more than 10 °C below the critical temperature. The occurrence of the phase separation seems to be connected with the existence of giant rod-like flexible micelles in the solutions. The analogies with critical solutions of polymers are underlined. J. Physique LETTRES 44 (1983) L-689 L-695 15 AOÛT 1983, Classification Physics Abstracts 64.60F 64.60H 82.70
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تاریخ انتشار 2016