Gelation of Chitosan by Sol-Gel Method

졸-겔법에 의한 키토산의 겔화

  • 김태영 (전남대학교 화학공학과) ;
  • 이동일 (전남대학교 환경공학과) ;
  • 문희 (전남대학교 공업화학과) ;
  • 양재호 (전남대학교 화학공학과)
  • Received : 1998.01.13
  • Accepted : 1998.03.03
  • Published : 1998.06.10

Abstract

The gelation characteristics of chitosan of different molecular weight were investigated in terms of concentration and temperature of alkari aqueous solution. The average molecular weights and the degrees of deacetylation of the chitosan used were $2.0{\times}10^5$, $5.2{\times}10^5$, $8.2{\times}10^5$ and 85%, respectively. Sodium hydroxide solution was used as a gelation agent. A simple diffusion model was applied to study the gelation rate. The diffusion coefficients of the gelation agent in the chitosan gel increased with increasing its concentration, temperature of the casting solution, and molecular weight of the chitosan.

Keywords

References

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