Orientational Order in Clay Gels(Exfoliation)

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概要

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• This article describes the nematic-like orientational order of exfoliated platelets in concentrated smectite clay gels. At concentrations larger than a few percent (w/w), clay gels are strongly birefringent, which is usually associated with nematic liquid-crystalline ordering. This means that the clay platelets tend to align parallel to each other in a cooperative way. Indeed, very oriented samples can easily be prepared and their SAXS patterns are strongly anisotropic, resulting in nematic order parameters of S〜0.55 quite comparable to those of common organic liquid crystals used for display applications. Even though the sol/gel transition occurs at concentrations lower than the isotropic/nematic one, nematic ordering appears in concentrated clay gels and it must be considered in most practical situations.

• 日本粘土学会の論文

著者

• Davidson P.

  Laboratoire De Physique Des Solides

• Gabriel J.

  Nanomix Inc.

関連論文

• Orientational Order in Clay Gels(Exfoliation)

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