journal6 ›› 2003, Vol. 24 ›› Issue (2): 20-22.

• Chemistry and chemical engineering • Previous Articles     Next Articles

Feather-like Crystals of N-Alkyl Chitosan


  1. (Department of Materials Science and Engineering,Xiamen University,Xiamen 361005,Fujian China)
  • Online:2003-06-15 Published:2012-11-07

Abstract: The N-methyl chitosan or N-ethyl chitosan was cast into films at high vacuum.Then the cast film crystallized at 25 ℃ and 65% relative humidity and the feather-like crystals appeared.The feather-like crystals were different with spherulites,which grew in the films cast at low vacuum.In addition to morphology,the birefrigence nature of feather-like crystals and spherulites was completely different.The former was negative,but the latter was positive.The feather-like crystals were believed to belong to one kind of dendritic crystals.

Key words: chitosan, N-alkyl chitosan, crystalline morphology lamella, dendritic crystals

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