| 초록 |
Thermotropic liquid crystalline polymers (TLCP), 4-hydroxybenzoic acid (HBA)/6-hydroxyl-2-naphthoic acid (HNA) copolyester and HNA/hydroxyl acetaniline (HAA)/terephthalic acid (TA) copolyester reinforced by carbon nanotube (CNT) were prepared by melt compounding process. Thermal decomposition behavior of CNT reinforced HBA/HNA and HNA/HAA/TA copolyesters was investigated. Thermal stability of CNT reinforced HBA/HNA copolyester was increased by addition of CNT. However thermal stability of CNT reinforced HNA/HAA/TA copolyester was decreased initially when CNT added. After addition of CNT, thermal stability of CNT reinforced HNA/HAA/TA copolyester was increased with increasing content of CNT. The activation energy was calculated by multiple heating rate equations such as Friedman, Flynn-Wall-Ozawa, Kissinger, and Kim-Park methods to confirm the effect of CNT in two different TLCP matrices. This research was supported by National Research Foundation of Korea. (Project No. 2010-0028182). |
