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Phase transition temperatures pT (nematic ≒ isotropic) in the system cetyltrimethylammonium bromide — water (CTAB-H2O) were measured in the presence of small amounts of trans AB15C5, an azobenzene derivative that bears two crown-ether moieties. pT decreased as a function of the AB15C5 concentration. This pT decrease can be ascribed to interactions of the crown-ether moieties with CTAB. The effect...
The influence of in situ photochemical transformations of aromatic solubilizates on the flow properties of aqueous micellar solutions of cetyltrimethylammonium bromide was investigated, using Ostwald-viscometers in cases of Newtonian flow and a rotating viscometer in cases of non Newtonian flow behaviour, i. e. rheopexy, thixotropy, and viscoelasticity. Newtonian flow was observed in systems containing...
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