Kim, Youngsu Yeo, Hyeonuk You, Nam-Ho Jang, Se Gyu Ahn, Seokhoon Jeong, Kwang-Un Lee, Seung Hee Goh, Munju 2024-01-20T01:32:08Z 2024-01-20T01:32:08Z 2021-09-01 2017-05-14 1759-9954 https://pubs.kist.re.kr/handle/201004/122738 To develop advanced thermally conductive epoxy resins with liquid crystallinity, three novel liquid crystalline epoxies (LCEs) were synthesized via the substitution of phenylcyclohexyl (PCH) mesogenic moieties into the 2,5 positions of diglycidyl terephthalate. Mesomorphic properties of LCEs were evaluated by differential scanning calorimetry (DSC), polarized optical microscopy (POM), and X-ray diffraction (XRD). All LCEs exhibited an enantiotropic smectic phase on heating and cooling. Remarkably, the smectic phase with a wide temperature range of 98-145 degrees C was observed for the eutectic mixtures of a family of stable smectic LCEs. The selection of optimum curing agents, compositions of LCEs and curing agents, and curing conditions were determined based on physical, chemical, and thermal properties of LCEs and curing agents. The thermally cured LCEs at the LC phase exhibited a high thermal conductivity of 0.4 W m(-1) K-1. English ROYAL SOC CHEMISTRY MECHANICAL-PROPERTIES INSULATION MATERIALS MAGNETIC-FIELD ORIENTATION DIFFUSIVITY COMPOSITES MORPHOLOGY PARTICLE FILLER SIZE Highly thermal conductive resins formed from wide-temperature-range eutectic mixtures of liquid crystalline epoxies bearing diglycidyl moieties at the side positions Article 10.1039/c7py00243b 1 POLYMER CHEMISTRY, v.8, no.18, pp.2806 - 2814 POLYMER CHEMISTRY 8 18 2806 2814 scie scopus 000400979500008 Polymer Science Polymer Science Article MECHANICAL-PROPERTIES INSULATION MATERIALS MAGNETIC-FIELD ORIENTATION DIFFUSIVITY COMPOSITES MORPHOLOGY PARTICLE FILLER SIZE epoxy thermal conductivity liquid crystal thermoset polymer