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Phase diagram of poly (ethylene oxide)-poly (propylene oxide)poly (ethylene oxide) copolymer (AL-64) and nonionic surfactant dodecyl polyoxyethylene (23) ether (Brij 35) aqueous solutions has been determined at 25 °C using the titration method. Hexagonal, cubic and two lamellar liquid crystalline phases were found and characterized by use of polar optical microscopy and small-angle X-ray scattering (SAXS) techniques. Dynamic rheological measurements were further performed on the found liquid crystals. It has been shown that the cubic and lamellar phases exhibit elastic properties, while the hexagonal phase presents viscoelastic properties. At the constant water content, with increase in the concentration of the copolymer AL-64, the rheological G′ and G″ moduli, the critical shear stress and the network strength of the hexagonal liquid crystals get decreased. The two lamellar phases exhibit clearly different rheological properties, and the lamellar phase lies in Brij35 rich side possess stronger network strength than the hexagonal phase, through the rheological data analyses.
From Zhongni Wang 1 | Feng Liu 2 | Tandong Zhang 3 | Xilian Wei 3 | Wu Zhou 1 | Xiaolu Tang 1
1College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, China
2Test Center, Shandong Academy of Sciences, Jinan, China
3College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, China
2Test Center, Shandong Academy of Sciences, Jinan, China
3College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, China
(Received 27.12.2011; revised 26.01.2012)
Appeared in Tenside Surfactants Detergents 2012/03, Page 225-230
Direct link: http://www.tsd-journal.com/TS110186
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Lyotropic Liquid Crystals Formed in Brij35/Copolymer/Water System [581 KB]
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References
1 Larsen, D. W., Friberg, S. E. and Christenson, H.: J. Am. Chem. Soc. 102 (1980) 6565.
2 Alfaro, M. C., Cuerrero, A. F. and Munoz, J.: Langmuir. 16 (2000) 4711.
3 Gillberg, G., Lehtinen, H. and Friberg, S. E.: J. Colloid Interface Sci. 33 (1970) 40.
4 Friberg, S. E., Mandell, L. and Larsson, M.: J. Colloid Interface Sci. 29 (1969) 155.
5 Friberg, S. E. and Ahmad, S. I.: J. Colloid Interface Sci. 35 (1971) 175.
6 Kekicheff, P. and Tiddy, G. J. T.: J. Phys. Chem. 93 (1989) 2520.
7 Partal, P., Kowalski, A. J., Machin, D. and Kiratzis, N.: Langmuir. 17 (2001) 1331.
8 Palmqvist, A. E. C.: Curr Opin in Colloid Interface Sci. 8 (2003) 145.
9 Nesseem, D. I.: J. Pharmaceutics &Biomedical Annlysis. 26 (2001) 387.
10 Amar-Yuli, I., Libster, D., Aserin, A. and Garti, N.: Curr Opin in Colloid Interface Sci. 14 (2009) 21.
11 Rosen, M.J.: Surfactants and interfacial phenomena, 3rdedition, John Willy & Sons, New York. (2004) 395.
12 Zhang, R., Zhang, L. and Somasundaran P. J.: J. Colloid Interface Sci. 278 (2004) 453.
13 Kaler, E. W., Murthy, K., Rodriguez, B. E. and Zasadzinske, J. A. N.: Science. 245 (1989) 1371.
14 Amado, E. and Kressler, J.: Curr Opin in Colloid Interface Sci. 16 (2011) 491.
15 Aramaki, K., Hsooain, Md. K., Rodriguez, C. Uddin, Md. H. and Kunieda, H.: Macromolecules. 36 (2003) 9443.
16 Horanyi, T., Halasz, L., Palinkas, J. and Nemeth, Zs.: Langmuir. 20 (2004) 1639.
17 Wang, Z. N., Meng, L., Zhou, W., Wang, Z. W., Liu, F., Li, G. Z. and Zhang G. Y.: J. Dispersion Science and Technology. 29 (2008) 313.
18 Dimitrova, G. T., Tadros, Th. F. and Luckham, P. F.: Langmuir. 11 (1995) 1101.
19 Cordobes, F., Munoz, J. and Gallegos, C.: J. Colloid Interface Sci. 187 (1997) 401.
20 Yariv, D., Efrat, R., Libster D. and Aserin A.: Colloids and Surfaces B: Biointerfaces. 78 (2010) 185.
21 Youssry, M., Coppola, L., Nicotera, I. and Morán, C.: J. Colloid Interface Sci. 321 (2008) 459.
22 Lauger, J., Weigel, R., Berger, K., Hiltrop, K. and Richtering, W.: J. Colloid Interface Sci. 181 (1996) 521.
23 Durrschmidt, T. and Hoffman, H.: Colloid Polym Sci. 279 (2001) 1005.
24 Wang, Z., Liu, F., Gao, Y., Zhuang, W., Xu, L., Han, B., Li, G. and Zhang, G.: Langmuir. 21 (2005) 4931.
25 Galatanu, A. N., Chronakis, I. S., Anghel, D. F. and Khan, A.: Langmuir. 16 (2000) 4922.
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