Abstract
Two completely different crystals can grow from cyanoethyl chitosan/formic acid solutions in which the anisotropic liquid crystalline (LC) and isotropic phases coexisted. One was normal spherulites developing from isotropic region, and the other was cholesteric-like crystallites developing from mesophase region. The latter had similar optical characters as fingerprint texture. This implies that the crystal structure in solution cast film from cholesteric LC phase remained the main structure characters of cholesteric LC texture. A model is presented to explain the crystallization process from these liquid crystalline polymer solutions.
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Dong, Y., Yuan, Q., Wu, Y. et al. Crystalline Morphology Developing from Cholesteric Mesophase in Cyanoethyl Chitosan Solutions. Polym J 32, 326–329 (2000). https://doi.org/10.1295/polymj.32.326
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DOI: https://doi.org/10.1295/polymj.32.326