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CPS 768 Formation of anisotropic ice-agar composites by directional freezing

  • Colloid Science
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Abstract

Aqueous agar gels were directionally frozen in a temperature gradient of 10 °C/ cm at rates between 8.8×10−5 cm/sec and 8.8×10−4 cm/sec to form highly anisotropic ice-agar composites. Observations of the vitrified agar domains which were localized at the ice grain boundaries were made and the ice domain size was measured as a function of the solidifying conditions. The segregation of the noncrystalline agar was dominated by the vitrification character of the agar gel. Thermal analysis indicated that ice crystallization rate decreased to a negligible level as the water content of the gel decreased to approximately 50 percent by weight agar.

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Author notes

  1. Carl C. Gryte

    Present address: Department of Chemical Engineering and Applied Chemistry, Columbia University, 10027, New York, New York

  2. Ho-ming Tong

    Present address: IBM Thomas J. Watson Research Center, Yorktown Heights, 10598, New York

  3. Isao Noda

    Present address: Miami Valley Laboratories, Procter and Gamble Company, 45247, Cincinnati, Ohio

Authors and Affiliations

  1. Department of Chemical Engineering and Applied Chemistry, Columbia University, 10027, New York, New York

    Ho-ming Tong & Isao Noda

Authors
  1. Ho-ming Tong
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  2. Isao Noda
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  3. Carl C. Gryte
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Tong, Hm., Noda, I. & Gryte, C.C. CPS 768 Formation of anisotropic ice-agar composites by directional freezing. Colloid & Polymer Sci 262, 589–595 (1984). https://doi.org/10.1007/BF01451524

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  • DOI: https://doi.org/10.1007/BF01451524

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