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

By Mathew L. Lynch, Patrick T. Spicer

ISBN-10: 1574444492

ISBN-13: 9781574444490

With the improvement of numerous analytical chemistry recommendations, the invention of wealthy and various houses concerning bicontinuous liquid crystal constructions has yielded necessary functions in medication, customer items, fabrics technology, and biotechnology. featuring contributions from 24 specialists all over the world, Bicontinuous Liquid Crystals offers a accomplished assessment of those buildings with a pragmatic method of utilizing them in production and laboratory approaches. This publication considers the cubic, mesh, ribbon, and sponge equilibrium levels of bicontinuous buildings. It starts off with a historic standpoint and a theoretical platform for learn, by means of a close dialogue of actual chemistry, homes, and structural features of the various stages. The textual content interrelates the main worthwhile analytical tools for the characterization of the habit and balance of liquid crystalline stages in keeping with constitution, geometry, composition-dependent adjustments, temperature, dispersion, and different elements. those options contain differential geometry, thermodynamics, neighborhood and international packing, and the examine of conformational entropy. The ebook additionally highlights instruments for mathematically visualizing bicontinuous structures. this gives an outstanding origin for the authors' exam of the newest reviews and functions, corresponding to managed liberate, fabrics improvement, fabrication, processing, polymerization, protein crystallization, membrane fusion, and remedy of human dermis. Bicontinuous Liquid Crystals represents present tendencies and cutting edge principles within the learn of bicontinuous liquid crystals. Divided into 3 sections, it presents an entire review of theoretical and modeling facets, actual chemistry and characterization, and purposes during this energetic box of analysis.

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Extra resources for Bicontinuous Liquid Crystals (Surfactant Science)

Example text

The surfaces can be distinguished by their topology, indeed the higher the topology the larger the area that the surface possesses. Since the surface area per molecule is determined for an amphiphile under a given set of experimental parameters (temperature, water content, salt concentration, etc), then the surface-tovolume ratio of the mixture, and hence the interfacial topology, is set by the concentration of the surfactant. It is possible to relate the surface-to-volume ratio to the geometry of the interface even for structures more complex than spheres, rods, and bilayers.

Although relatively rare, the phase structure is apparently independent of the type of amphiphilic system within which it is formed. It is possible to predict the stability of these phase structures and concomitantly the stability of the liquid crystalline phases. By assigning an elastic cost to a deformation of the structure away from its preferred Ns, it is possible to estimate the energy for a local perturbation.

Interestingly, in this system the ribbon intermediate phase acted as an intermediate between the H1 phase and a three-dimensional rhombohedral phase, Bc1(rhombohedral){Rα}. This surfactant, in aqueous and nonaqueous solvents, was considered in more detail by Auvray et al. [53,54]. The centered rectangular phase in water was confirmed, although it was not observed in the non-aqueous solvents. Hagslätt et al. [22,33,55,56] have investigated the formation of ribbon phases in a number of ternary systems.

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

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