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Lamellar Liquid Crystals of Brij 97 Aqueous Solutions Containing Different Additives

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Abstract

Lamellar liquid crystals of Brij 97 aqueous solutions were investigated by means of rheological techniques and SAXS at 25 °C, in the presence of various additives including isopropyl myristate, oleic acid, ionic liquid bmim-PF6 and bmim-BF4. The lamellar phases show high elasticity as indicated by their mechanical and discrete relaxation spectra, which is expected to be an advantage when they are used as drug delivery vehicles. It is noted that in comparison with other systems, the lamellar phase formed in the Brij 97/water/IPM system has the lowest storage and loss moduli, implying that it has a weak network strength and less stable internal structure. The Brij 97/water/oleic acid system is the most shear resistance, whereas the Brij 97/water/bmim-PF6 system exhibits fluid-like viscoelastic properties to some extent. These differences are analyzed through SAXS data for the different location of the additive in the lamellar phase.

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Authors and Affiliations

  1. College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China

    Zhongni Wang & Wu Zhou

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  1. Zhongni Wang
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  2. Wu Zhou
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Correspondence to Zhongni Wang.

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Wang, Z., Zhou, W. Lamellar Liquid Crystals of Brij 97 Aqueous Solutions Containing Different Additives. J Solution Chem 38, 659–668 (2009). https://doi.org/10.1007/s10953-009-9399-y

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