Journal Article10.1063/1.1747853
X‐Ray Diffraction by Solid Soaps
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TL;DR: In this paper, it was shown that x-ray diagrams obtained by using the powder technique for common soap samples can be interpreted in terms of two kinds of disordering, a stacking disorder of micellar layers, which makes the layers optically independent for certain diffraction maxima so that continuous diffraction bands arise rather than discrete maxima.
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Abstract: Arguments are presented to show that x‐ray diagrams obtained by using the powder technique for common soap samples can be interpreted in terms of two kinds of disordering. The first kind of disorder, a stacking disorder of micellar layers, makes the layers optically independent for certain diffraction maxima so that continuous diffraction bands arise rather than discrete maxima. A second kind of disorder within a layer in which long chain ions are randomly oriented with respect to rotation about their long axes causes all but one set of bands to be weak. A consideration of these two disorders permits extensive unification of the results of x‐ray diffraction experiments for poorly crystallized soaps. The use of such diffraction patterns for phase studies is subject to severe uncertainties.
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Citations
Artificial biomineralisation and metallic soaps
Robert Corkery
- 01 Mar 1998
TL;DR: In this article, a review of the history, syntheses, structure and liquid crystallinity of metallic soaps and other amphiphiles is presented as a foundation to understand the interfacial architectures in mesostructured template systems in general.
Proton magnetic resonance absorption in anhydrous potassium stearate
R. F. Grant,B. A. Dunell +1 more
TL;DR: The proton magnetic resonance absorption in anhydrous potassium stearate has been measured over the temperature range −190 °C to 182 °C as mentioned in this paper, and abrupt changes in line width have been found between 55 °C a...
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Associations moléculaires dans les cristaux de mélanges binaires de savons
H. Lécuyer,D. G. Dervichian +1 more
- 01 Jul 1964
TL;DR: In this paper, the difference relative to the number of atomes of carbonex/n ≦ 0.14 is calculated, and the difference between x/n and 0.50 is calculated.
13
References
X-Ray Diffraction in Random Layer Lattices
TL;DR: In this article, the authors considered random layer lattice structures, which consist of layers arranged parallel and equidistant, but random in translation parallel to the layer, and rotation about the normal.
1.2K
Polymorphic transformations of calcium stearate and calcium stearate monohydrate.
TL;DR: Differential heating and cooling curves and X-ray diffraction patterns of quenched samples at room temperature are presented and calcium stearates of technical quality resemble the pure material but tend to assume the vitreous form more readily and to crystallize completely only with difficulty.
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Indexing method of powder photographs of long‐spacing compounds
TL;DR: In this paper, a method suitable for indexing X-ray powder photographs of compounds which give long-spacing reflexions is described, which reduces the problem to that of a two-dimensional lattice.
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