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Under certain conditions, polypeptide liquid crystal may exhibit an isotropic–anisotropic transition coupled with the intramolecular coil–helix changes. Based on the theoretical model that describes this phenomenon well [Lin J, et al. Polymer 2000; Lin J. Polymer 1997, 1998], the influence of external orientational field on such conformationally coupled transition was studied by introducing an energy...
Phase behavior and conformation characteristics were reported for poly(γ-benzyl-l-glutamate) (PBLG) in dichloroacetic acid (DCA) and a mixed solvent of CHCl3/trifluoroacetic acid (TFA). The anisotropic–isotropic transition, where intramolecular helix–coil transition was coupled, was observed for the PBLG liquid crystal solution prepared, at room temperature, with either a decrease in temperature or...
Kinetics of the phase transition from isotropic to liquid crystal state, which is by analogy termed as liquid crystallization, was reported for the poly(p-phenylene terephthalamide)/H 2 SO 4 system. Experimental results show that the effect of the temperature on the liquid crystallization process is marked while the polymer concentration within the experimental condition employed has...
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