Preparation of a polyelectrolyte complex gel from chitosan and κ‐carrageenan and its pH‐sensitive swelling

Takaharu Sakiyama, Chia‐Hong ‐H Chu, Tomoyuki Fujii, Toshimasa Yano

研究成果: Article査読

183 被引用数 (Scopus)

抄録

A polyelectrolyte complex gel was prepared by mixing chitosan and k‐carrageenan solutions in the presence of NaCl. To study the effect of ambient pH on the swelling behavior, the diameter of the cylindrical gel(4 mm x 8 mm) immersed in aqueous NaOH, KOH, or HCl solution was measured. In the range of pH 10–12, the diameter increased with time, and the gel reached swelling equilibrium within 6 days. In an NaOH solution of pH 10.5, the maximum swelling occurred, and the volume of the gel at equilibrium was 10.2 times as large as the initial one. At pH below 9 and at pH 13, no swelling was observed. Thus, the swelling of the complex gel prepared in this study was sensitive to a rather narrow range of pH. The swelling equilibrium in the presence of NaCl was also investigated at various pH. © 1993 John Wiley & Sons, Inc.

本文言語English
ページ(範囲)2021-2025
ページ数5
ジャーナルJournal of Applied Polymer Science
50
11
DOI
出版ステータスPublished - 1993 12 15
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 表面、皮膜および薄膜
  • ポリマーおよびプラスチック
  • 材料化学

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