Studies on liquid crystalline behavior of chitosan
- 化学化工－已发表论文 
The lyotropic liquid crystalline behavior of a natural macromolecule-chitosan was studied using polarized microscopy, average refractive index method and FTIR. The critical concentrations of chitosan in solvents of dichloroacetic acid, formic acid, acrylic acid and 36% acetic acid were all 8% (percentage by volume) or 4%similar to 6% (percentage by weight), These experimental values are consistent with the calculated value deduced according to Flory theory. These low critical concentration values also imply that the chain rigidity of chitosan is larger than that of cellulosic chain.