Citation: . INFLUENCE OF MOLECULAR WEIGHT OF CHITIN AND ITS THREE DERIVATIVES ON CRITICAL CONCENTRATION OF LYOTROPIC LIQUID CRYSTALLINE PHASE TRANSITION*[J]. Chinese Journal of Polymer Science, ;2000, 18(1): 15-17. shu

INFLUENCE OF MOLECULAR WEIGHT OF CHITIN AND ITS THREE DERIVATIVES ON CRITICAL CONCENTRATION OF LYOTROPIC LIQUID CRYSTALLINE PHASE TRANSITION*

Received Date: 30 August 1998

The critical concentration of lyotropic liquid crystalline phase transition for chitin derivatives was determinedusing a polarization microscope. The influence of molecular weight on critical concentration of liquid crystalline solution forchitin, chitosan, cyanoethyl chitosan and propionyl chitin successively increases as the chain rigidity decreases. Therefore itcan be used as an indicator of the chain rigidity.
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