Bicontinuous Liquid Crystals (Surfactant Science) by Mathew L. Lynch, Patrick T. Spicer

April 3, 2017 | Physical Chemistry | By admin | 0 Comments

By Mathew L. Lynch, Patrick T. Spicer

With the improvement of numerous analytical chemistry options, the invention of wealthy and diverse homes touching on bicontinuous liquid crystal constructions has yielded priceless functions in medication, shopper items, fabrics technological know-how, and biotechnology. proposing contributions from 24 specialists world wide, Bicontinuous Liquid Crystals provides a accomplished evaluation of those buildings with a pragmatic method of using them in production and laboratory approaches. This ebook considers the cubic, mesh, ribbon, and sponge equilibrium levels of bicontinuous constructions. It starts off with a old viewpoint and a theoretical platform for learn, by means of a close dialogue of actual chemistry, houses, and structural features of the several stages. The textual content interrelates the main helpful analytical tools for the characterization of the habit and balance of liquid crystalline stages in accordance with constitution, geometry, composition-dependent alterations, temperature, dispersion, and different elements. those strategies comprise differential geometry, thermodynamics, neighborhood and international packing, and the research of conformational entropy. The e-book additionally highlights instruments for mathematically visualizing bicontinuous structures. this offers a very good starting place for the authors' exam of the newest reports and purposes, equivalent to managed unlock, fabrics improvement, fabrication, processing, polymerization, protein crystallization, membrane fusion, and remedy of human dermis. Bicontinuous Liquid Crystals represents present tendencies and leading edge rules within the research of bicontinuous liquid crystals. Divided into 3 sections, it offers a whole evaluation of theoretical and modeling points, actual chemistry and characterization, and functions during this energetic box of study.

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G Gustavsson, H Ljusberg-Wahren, K Larsson, M Almgren. Langmuir 12:4611–4613, 1996. 21. G Gustavsson, H Ljusberg-Wahren, K Larsson, M Almgren. Langmuir 13:6964–6971, 1997. 22. M Monduzzi, H. Ljusberg-Wahren, K Larsson. Langmuir 16:7355–7358, 2000. 23. T Landh. Cubic cell membrane architectures. Thesis, Lund Univesity, Lund, Sweden, 1996. 24. K Larsson. Curr Opin Colloid Interface Sci 5:64–69, 2000. 25. S Andersson, K Larsson, M Larsson, M Jacob. Biomathematics: Mathematics of Biostructures and Biodynamics.

2 The Principal Peaks in the X-Ray Scattering Pattern from a Rhombohedral Intermediate Phase and Their Assignment to Both Mh1 (R 3 m) and Bc1 (R 3 c) Structures Peak No. 4. 30 Holmes and Leaver (1 0 1) reflection from a Bc1 (R 3 c) structure is always missing, which would have to be explained by a form factor effect suppressing the intensity of this reflection. Turning to other techniques helps to distinguish between these two possibilities. In the C16EO6 /water system, the transition from rhombohedral intermediate phase to Mh1(0) is second order as indicated by the continuous evolution of the 2H NMR splitting, while that from the intermediate phase to V1(Ia3d) phase is first order with a twophase coexistence region detectable using the same technique [81].

Kékicheff and Tiddy [23] showed that a tetragonal mesh intermediate phase, Mh1(I4mm) {Tα} exists in the lithium perfluorooctanoate (LiPFO)/water system. The lamellar phase above the Mh1(I4mm) phase also appeared to contain random water-filled defects (an unpublished observation by the authors while studying the synchrotron scattering recorded in the Mh1(I4mm) phase). 24 Holmes and Leaver The authors noted the higher viscosity of the correlated mesh over the lamellar phase, explaining this in terms of the node associated with one junction zone fitting over the hole in the layer below, restricting the sliding of one mesh layer past another.

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