溶剂性质对层状液晶结构与稳定性的影响

水体系层状液晶虽早有研究,但对非水层状液晶的研究则开始较晚,本文用HNMR和小角X射线衍射等方法,研究了极性有机溶剂甲酰胺代替水后,对SDS/C₁₀OH/溶剂体系层状液晶结构与稳定性的影响。

Effects of Properties of Solvents on the Structure and the Stability of Lamellar Liquid Crystal

The measurements of 2H NMR gave three reasons for the decrease of the stability of lamellar liquid crystal in SDS/C10OH/solvents when formamide was used as the solvent instead of waters the order parameter of SDS and C10OH decreased, the degression of order parameter of SDS and C10OH along the carbon chain increased and the compatibility of SDS with C10OH decreased. The low angle X-ray measurements show that the permeability of the solvent in the lamellar liquid crystal was increased when water was replaced by formamide so that the interlayer spacing d decreased at a certain weight ratio of C10OH/SDS and the dependence of the interlayer spacing d on the weight ratio of SDS/C10OH changed.