| Water as a dense icelike component in silicate glasses | |
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MedLine Citation:
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PMID: 9665879 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Density and Brillouin-scattering measurements of hydrous andesite glasses at ambient conditions showed that dissolved water has a concentration-independent partial molar volume of 12 +/- 0.5 cubic centimeters per mole and a bulk modulus of 18 +/- 3 gigapascals. Dissolved as hydroxyl ions or as molecular water, water has volume properties similar to those of ice VII, the densest form of ice. These properties point to hydrogen bonding as an important factor in water dissolution, and they indicate that changes of water speciation are driven by the entropy and not by the volume of the system. Water in a concentration greater than 1 percent by weight also causes a marked decrease of the shear modulus of the glass. |
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Authors:
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Richet; Polian |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 281 ISSN: 1095-9203 ISO Abbreviation: Science Publication Date: 1998 Jul |
Date Detail:
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Created Date: 1998-08-01 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: - |
Other Details:
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Languages: Eng Pagination: 396-8 Citation Subset: - |
Affiliation:
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P. Richet, Laboratoire de Physique des Geomateriaux, Unite de Recherche Associee CNRS 734, Institut de Physique du Globe, 4, Place Jussieu, 75252 Paris Cedex 05, France. A. Polian, Laboratoire de Physique des Milieux Condenses, Unite de. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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