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Synthesis, characterization, and mechanical properties of a novel terphenyl liquid crystalline epoxy resin
Author(s) -
Harada Miyuki,
Ando Junichiro,
Yamaki Motohiro,
Ochi Mitsukazu
Publication year - 2015
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.41296
Subject(s) - epoxy , materials science , differential scanning calorimetry , terphenyl , fourier transform infrared spectroscopy , curing (chemistry) , liquid crystal , composite material , polymer , optical microscope , polymer chemistry , scanning electron microscope , chemical engineering , organic chemistry , chemistry , physics , optoelectronics , engineering , thermodynamics
A novel terphenyl liquid crystalline (LC) epoxy resin was synthesized and characterized by 1 H‐NMR, Fourier transform infrared spectroscopy, differential scanning calorimetry (DSC), and polarizing optical microscopy. Depending on the curing temperature, the synthesized resin formed both smectic and nematic LC phases. A time‐temperature‐transformation diagram was constructed to optimize the curing process, which helped in the preparation of LC and isotropic system. The terphenyl epoxy resin obtained exhibited higher acid resistance than a comparable Schiff‐base epoxy resin, and also displayed excellent fracture toughness. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41296.