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Title: Study on lyotropic liquid crystals of the 3-octyloxy-2-hydroxypropyl trimethyl ammonium bromide-n-hexanolwater system
Authors: Yin, Bao-Lin
Wei, Xi-Lian
Sang, Qing
Sun, De-Zhi
Issue Date: Jan-2005
Publisher: NISCAIR-CSIR, India
Abstract: Phase diagram of ternary system for 3-octyloxy-2- hydroxypropyl trimethyl ammonium bromide (R8TAB)-n-hexanol- water has been investigated using turbidity titration method at 25 °C. Typical lyotropic liquid crystals (LLCs) of lamellar, hexagonal and cubic phases have been found in the system. The structure and the structure conversion have been determined using polarizing-light microscope, 2H nuclear magnetic resonance (2H NMR) and differential scanning calorimetry (DSC). Experimental results show that with the enhancement of relative amount of water in a mixture maintaining mass ratio of R8TAB to C6H13OH at 3:2, the phase transition is as follows: from mixed lamellar and hexagonal liquid crystals to mixed lamellar, hexagonal and cubic ones, then to single cubic one and finally to mixed hexagonal one and isotropic liquid phase.
Page(s): 67-70
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.44A(01) [January 2005]

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