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Crystal growth in syndiotactic poly(vinyl alcohol) hydrogels

  • Polymer Science
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Abstract

Aqueous solutions of syndiotacticity-rich poly(vinyl alcohol) (s-PVA) form gels easily. The optimum condition of growth of the calcium tartrate crystal formed by diffusing calcium chloride into hydrogels containing tartaric acid was studied with use ofs- PVA of a syndiotacticity of 56 % and a degree of polymerization of 1460. The crystal grew in the gel of the concentrations of 2 % s-PVA and of 0.5 N tartaric acid at pH=4. The relation between the formation of Liesegang rings and shear modulus of a gel was studied by diffusing silver nitrate into gels containing potassium chromate. The distance between rings decreased with increasing shear modulus of a gel in the range from 670 to 7500 dyne/cm2. The Liesegang rings were not formed for the shear modulus gel for 280 and 16200 dyne/cm2.

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Author notes

  1. S. Matsuzawa

    Present address: Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan

Authors and Affiliations

  1. Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan

    Y. Hondo, Y. Kawauchi, M. Kume, K. Yamaura, T. Tanigami & K. Ogasawara

Authors
  1. S. Matsuzawa
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  2. Y. Hondo
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  3. Y. Kawauchi
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  4. M. Kume
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  5. K. Yamaura
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  6. T. Tanigami
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  7. K. Ogasawara
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Matsuzawa, S., Hondo, Y., Kawauchi, Y. et al. Crystal growth in syndiotactic poly(vinyl alcohol) hydrogels. Colloid & Polymer Sci 265, 810–814 (1987). https://doi.org/10.1007/BF01418457

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  • DOI: https://doi.org/10.1007/BF01418457

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