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Study on the UCST and LCST in PHB/PBHE-solvent system

Zhang Hf, Liu Jy, Se Jun Wang, Song Fj, Mo Zs

Abstract

Upper and lower critical solution temperature (UCST and LCST) behaviours have been examined for solution of PHB/PBHE blends in chloroform and chlorobenzene. Polymer-Solvent systems prepared with various solvents and concentrations were found to possess UCST and LCST characteristics. PHB/PBHE solution in chloroform displayed greater miscibility temperature region than that of the blend in chlorobenzene, but the relative tendency of both UCST and LCST were similar.

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Available abstract

Key concepts: Upper critical solution temperature, Lower critical solution temperature, Chlorobenzene, Miscibility, Solvent, Chloroform, Polymer chemistry, Materials science