Jeong, Iseul Kim, Chae Bin Kang, Dong-Gue Jeong, Kwang-Un Jang, Se Gyu You, Nam-Ho Ahn, Seokhoon Lee, Dai-Soo Goh, Munju 2024-01-19T20:31:58Z 2024-01-19T20:31:58Z 2021-09-02 2019-03-15 0887-624X https://pubs.kist.re.kr/handle/201004/120209 To address tremendous needs for developing efficiently heat dissipating materials with lightweights, a series of liquid crystalline epoxy resins (LCEs) are designed and synthesized as thermally conductive matrix. All prepared LCEs possess epoxies at the molecular side positions and cyanobiphenyl mesogenic end groups. Based on several experimental results such as differential scanning calorimetry, polarized optical microscopy, and X-ray diffraction, it is found that the LCEs exhibited liquid crystalline mesophases. When LCE is cured with a diamine crosslinker, the cured LCE maintains the oriented LC domain formed in the uncured state, ascribing to a presence of dipole-diploe and pi-pi interactions between cyanobiphenyl mesogenic end groups. Due to the anisotropic molecular orientation, the cured LCE exhibits a high thermal conductivity of 0.46 W m(-1) K-1, which is higher than those of commercially available crystalline or amorphous epoxy resins. (c) 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 708-715 English WILEY COMPOSITES MANAGEMENT Liquid crystalline epoxy resin with improved thermal conductivity by intermolecular dipole-dipole interactions Article 10.1002/pola.29315 1 JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.57, no.6, pp.708 - 715 JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 57 6 708 715 scie scopus 000458269900006 2-s2.0-85059276978 Polymer Science Polymer Science Article COMPOSITES MANAGEMENT epoxy heat dissipation lightweight liquid crystal thermal conductivity