직/편성물 가공

Dependence of Water-Solubility of Chitosan on Molecular Weight and Acetylation Degree.

  • 출판일1998.10
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 317
Researchers prepared a series of chitosan samples with various molecular weights and degrees of acetylation and investigated their water solubilities. They treated chitosan with NaBO(3) under a homogeneous condition where chitosan was previously dissolved in an aqueous acidic solution to reduce its molecular weight. GPC equipped with a LALLS determined the average molecular weights of the chitosan samples. Each chitosan sample was N-acetylated with acetic anhydride under a homogeneous condition. Nuclear magnetic resonance estimated the degree of N-acetylation. The water solubility of the N-acetylated chitosan with a degree of substitution of approximately 50 percent increased as the molecular weight decreased. Nuclear magnetic resonance also determined the sequence of N-acetylglucosamine units. Abstract.
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