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Thermotropic liquid crystalline behaviors of ethylcellulose
Author(s) -
Jianan Chen,
Yifang Huang,
Jinyue Yuan,
Shaoqiong Yan,
Hua Ye
Publication year - 1992
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1992.070451211
Subject(s) - thermotropic crystal , mesophase , materials science , liquid crystal , rheology , texture (cosmology) , polarized light microscopy , rheometer , optical microscope , composite material , scanning electron microscope , liquid crystalline , optics , artificial intelligence , computer science , image (mathematics) , optoelectronics , physics
The thermotropic liquid crystalline behaviors of ethylcellullose (EC) were investigated by DSC, polarizing microscope with hot stage, and capillary rheometer. It was found that only those EC that have the ethoxyl content over 45% can exhibit the thermotropic liquid crystalline behaviors: the DSC trace showed the transition from mesophase to isotropic phase, the texture appeared under the crossed polarizer, and the rheological flow curves exhibited two yield points.