Optical anisotropy of calcium-induced alginate gels

Yasuyuki Maki, Masako Wakamatsu, Kei Ito, Kazuya Furusawa, Takao Yamamoto, Toshiaki Dobashi

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Alginate gels formed by diffusion of calcium ions into solutions of sodium alginate were found to exhibit optical anisotropy depending on preparation conditions. When observed under crossed nicols, the anisotropic alginate gels showed a birefringence pattern which is characteristic of radial orientation of polymer chains. Calcium alginate gels were prepared from different concentrations of sodium alginate and calcium ion, and the conditions for formation of the anisotropic gels were determined. The gel-formation process was measured by monitoring the development of the birefringent layer and was compared with the model in which the diffusion of calcium ions dominates gel formation.

Original languageEnglish
Pages (from-to)24-28
Number of pages5
JournalJournal of Biorheology
Issue number1
Publication statusPublished - 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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