研究了一种新的甲壳素类高分子液晶－丙酰化甲壳素的液晶性．结果表明这种高分子在二氯乙酸溶液中的织构是带有指纹状微区的交替偏振场织构，可见存在胆甾相．在剪切时能形成典型的条带织构．分子量（从０．６７×１０６到３．４９×１０６）对临界浓度（均为２０ｗｔ％左右）和形成条带织构的最低浓度（均为３４ｗｔ％左右）的影响都不显著．这一结果与取代后分子链刚性较小有关． The liquid crystallinity of a new chitin polymer liquid crystal, propanoylated chitin, was studied. The results show that the texture of this polymer in dichloroacetic acid solution is an alternating polarized field with fingerprint-like domains, showing the presence of a cholesteric phase. In the shear can form a typical texture of the band. No significant effect of molecular weight (from 0.67 × 10 6 to 3.49 × 10 6) on the critical concentrations (both about 20 wt%) and the lowest concentration of ribbon textures (about 34 wt% each) was not significant. This result is related to the smaller rigidity of the molecular chain after substitution.