caa a22 4500 475764919 CHVBK 20180406123602.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1007/s003960050023 doi (NATIONALLICENCE)springer-10.1007/s003960050023 Phase behaviour and physical properties of the cationic quaternary system tetradecyldimethylamine oxide hydrochloric acid 1-hexanol water [Elektronische Daten] [R. Beck, M. Gradzielski, K. Horbaschek, S. S. Shah, H. Hoffmann, P. Strunz]  The phase behaviour and properties of the tetradecyldimethylamine oxide/HCl/hexanol/water quaternary surfactant system have been studied by means of electric conductivity, rheology, freeze-fracture transmission electron microscopy (FF-TEM) and small-angle neutron scattering (SANS). In this system the originally zwitterionic surfactant can become increasingly charged by protonation through the addition of HCl, i.e. the degree of charging can be changed continuously. An interesting, isotropic phase (L1 * phase) of low viscosity was observed for intermediate degrees of charging. From viscosity and conductivity measurements this phase can clearly be distinguished from the conventional L1 phase that is composed of micelles. Investigation of the structures present by means of FF-TEM and SANS showed that the L1 * phase is made up of unilamellar vesicles of extremely small diameter of 8-10 nm. Evidently such highly curved structures are stabilized by the electrostatic conditions in this system. Springer-Verlag Berlin Heidelberg, 2000 Key words Small vesicles nationallicence Phase behaviour nationallicence Small-angle neutron scattering nationallicence Charged surfactants nationallicence Beck R. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut Gradzielski M. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut Horbaschek K. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut Shah S. S. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut Hoffmann H. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut Strunz P. Hahn-Meitner-Institut Glienicker Strasse 100 D-14109 Berlin, Germany, DE aut https://doi.org/10.1007/s003960050023 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960050023 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Beck R. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut NATIONALLICENCE 700 1- Gradzielski M. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut NATIONALLICENCE 700 1- Horbaschek K. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut NATIONALLICENCE 700 1- Shah S. S. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut NATIONALLICENCE 700 1- Hoffmann H. Lehrstuhl für Physikalische Chemie I Universität Bayreuth D-95440 Bayreuth Germany e-mail: Reiner.Beck@uni-bayreuth.de Tel.: +49-921-552765, DE aut NATIONALLICENCE 700 1- Strunz P. Hahn-Meitner-Institut Glienicker Strasse 100 D-14109 Berlin, Germany, DE aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer