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Mechanical and Thermophysical Properties of Polymer Liquid Crystals
Taschenbuch von Witold Brostow
Sprache: Englisch

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may never overcome the effects of hysteresis and stress (see Chapters 6 and 12). The first sentence of the reference work, Handbook of Liquid Crystals, reads: The terms liquid crystals, crystalline liquid, mesophase, and mesomorphous state are used synonymously to describe a state of aggregation that exhibits a molecular order in a size range similar to that of a crystal but acts more or less as a viscous liquid: [2] In other words, molecules within a liquid crystalline phase possess some orientational order and lack positional order; furthermore, the shape of a liquid crystalline sample is determined by the vessel in which it is contained rather than by the orientational order of its aggregated molecules. The authors recognized the limitations and imprecision of this definition but, like others preceding them, could not devise a simple and generally applicable one that is better. Regardless, the terms 'liquid crystal' and 'mesophase' should not be used interchangeably. As mentioned above, all liquid crystals are mesophases, but all mesophases are not liquid crystals. Recent studies, employing elaborate and sophisticated analytical techniques, have permitted finer distinctions between classical crystals and mesophases. At the same time, they have made definitions like that from the Handbook of Liquid Crystals somewhat obsolete for reasons other than terminology. One part of the problem arises from the use of a combination of bulk properties (like flow) and microscopic properties (like molecular ordering) within the same definition.
may never overcome the effects of hysteresis and stress (see Chapters 6 and 12). The first sentence of the reference work, Handbook of Liquid Crystals, reads: The terms liquid crystals, crystalline liquid, mesophase, and mesomorphous state are used synonymously to describe a state of aggregation that exhibits a molecular order in a size range similar to that of a crystal but acts more or less as a viscous liquid: [2] In other words, molecules within a liquid crystalline phase possess some orientational order and lack positional order; furthermore, the shape of a liquid crystalline sample is determined by the vessel in which it is contained rather than by the orientational order of its aggregated molecules. The authors recognized the limitations and imprecision of this definition but, like others preceding them, could not devise a simple and generally applicable one that is better. Regardless, the terms 'liquid crystal' and 'mesophase' should not be used interchangeably. As mentioned above, all liquid crystals are mesophases, but all mesophases are not liquid crystals. Recent studies, employing elaborate and sophisticated analytical techniques, have permitted finer distinctions between classical crystals and mesophases. At the same time, they have made definitions like that from the Handbook of Liquid Crystals somewhat obsolete for reasons other than terminology. One part of the problem arises from the use of a combination of bulk properties (like flow) and microscopic properties (like molecular ordering) within the same definition.
Inhaltsverzeichnis
One Formation of Polymer Liquid Crystals.- 1 Creation of liquid crystalline phases: a comparative view emphasizing structure and shape of monomer liquid crystals.- 2Inorganic polymer liquid crystals.- 3 Design of polymer liquid crystals with non-covalent bonds.- 4 Morphology of thermotropic longitudinal polymer liquid crystals.- 5 Polymer liquid crystals in solution.- 2 Thermophysical Properties.- 6 Memory effects in polymer liquid crystals: influence of thermal history on phase behavior.- 7 Longitudinal polymer liquid crystal + engineering polymer blends: miscibility and crystallization phenomena.- 8 Thermal expansivity.- Three Mechanical Properties.- 9 Phase diagrams of polymer liquid crystals and polymer liquid crystal blends: relation to mechanical properties.- 10 Development and relaxation of orientation in pure polymer liquid crystals and blends.- 11 Flow-induced phenomena of lyotropic polymer liquid crystals: the negative normal force effect and bands perpendicular to shear.- 12 Creep and stress relaxation.- 13 Thermoreversible gelation of rigid rod-like and semirigid polymers.- 14 Elastic moduli of polymer liquid crystals.- 15 Computer simulations.
Details
Erscheinungsjahr: 2014
Fachbereich: Fertigungstechnik
Genre: Technik
Rubrik: Naturwissenschaften & Technik
Medium: Taschenbuch
Reihe: Polymer Liquid Crystals Series
Inhalt: xiv
520 S.
30 s/w Illustr.
4 farbige Illustr.
520 p. 34 illus.
4 illus. in color.
ISBN-13: 9781461376576
ISBN-10: 1461376572
Sprache: Englisch
Ausstattung / Beilage: Paperback
Einband: Kartoniert / Broschiert
Redaktion: Brostow, Witold
Herausgeber: Witold Brostow
Auflage: Softcover reprint of the original 1st ed. 1998
Hersteller: Springer US
Springer US, New York, N.Y.
Polymer Liquid Crystals Series
Maße: 235 x 155 x 30 mm
Von/Mit: Witold Brostow
Erscheinungsdatum: 23.02.2014
Gewicht: 0,814 kg
Artikel-ID: 105125030
Inhaltsverzeichnis
One Formation of Polymer Liquid Crystals.- 1 Creation of liquid crystalline phases: a comparative view emphasizing structure and shape of monomer liquid crystals.- 2Inorganic polymer liquid crystals.- 3 Design of polymer liquid crystals with non-covalent bonds.- 4 Morphology of thermotropic longitudinal polymer liquid crystals.- 5 Polymer liquid crystals in solution.- 2 Thermophysical Properties.- 6 Memory effects in polymer liquid crystals: influence of thermal history on phase behavior.- 7 Longitudinal polymer liquid crystal + engineering polymer blends: miscibility and crystallization phenomena.- 8 Thermal expansivity.- Three Mechanical Properties.- 9 Phase diagrams of polymer liquid crystals and polymer liquid crystal blends: relation to mechanical properties.- 10 Development and relaxation of orientation in pure polymer liquid crystals and blends.- 11 Flow-induced phenomena of lyotropic polymer liquid crystals: the negative normal force effect and bands perpendicular to shear.- 12 Creep and stress relaxation.- 13 Thermoreversible gelation of rigid rod-like and semirigid polymers.- 14 Elastic moduli of polymer liquid crystals.- 15 Computer simulations.
Details
Erscheinungsjahr: 2014
Fachbereich: Fertigungstechnik
Genre: Technik
Rubrik: Naturwissenschaften & Technik
Medium: Taschenbuch
Reihe: Polymer Liquid Crystals Series
Inhalt: xiv
520 S.
30 s/w Illustr.
4 farbige Illustr.
520 p. 34 illus.
4 illus. in color.
ISBN-13: 9781461376576
ISBN-10: 1461376572
Sprache: Englisch
Ausstattung / Beilage: Paperback
Einband: Kartoniert / Broschiert
Redaktion: Brostow, Witold
Herausgeber: Witold Brostow
Auflage: Softcover reprint of the original 1st ed. 1998
Hersteller: Springer US
Springer US, New York, N.Y.
Polymer Liquid Crystals Series
Maße: 235 x 155 x 30 mm
Von/Mit: Witold Brostow
Erscheinungsdatum: 23.02.2014
Gewicht: 0,814 kg
Artikel-ID: 105125030
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