Edlund H, Bydén M, Lindström B, Khan A
Department of Chemistry and Process Technology, Chemistry, Mid Sweden University, Sundsvall, S-851 70, Sweden
J Colloid Interface Sci. 1998 Aug 15;204(2):312-9. doi: 10.1006/jcis.1998.5582.
The isothermal ternary phase diagram for the 1-dodecylpyridinium bromide/dodecane/water system was determined at 40 degreesC by 2H NMR and polarizing microscopy methods. Two liquid crystalline phases, a large cubic area and a normal hexagonal phase, and one isotropic normal micellar solution phase were characterized, and their ranges of existence were determined. The micelles were found to be probably small and spherical at lower concentrations of surfactant, and were found to grow at higher concentrations and on addition of oil. The two-phase areas, L1 + HI and HI + I, are both very narrow. The comparatively large cubic area, containing 43-63 wt% surfactant and 3-10 wt% dodecane, is probably consistent of more than one structure. SAXS experiments indicate two different structures built of discrete micellar aggregates. Copyright 1998 Academic Press.
采用2H NMR和偏光显微镜方法，在40℃下测定了溴化1-十二烷基吡啶/十二烷/水体系的等温三元相图。表征了两个液晶相、一个大的立方相区域和一个正六边形相，以及一个各向同性的正常胶束溶液相，并确定了它们的存在范围。发现胶束在较低表面活性剂浓度下可能较小且呈球形，在较高浓度下以及添加油时会生长。L1 + HI和HI + I这两个两相区域都非常窄。相对较大的立方相区域，含有43 - 63 wt%的表面活性剂和3 - 10 wt%的十二烷，可能由不止一种结构组成。小角X射线散射实验表明由离散胶束聚集体构成的两种不同结构。版权所有1998年学术出版社。
