A novel wholly aromatic liquid crystalline epoxy monomer based on 2,7-naphthalene mesogen: Synthesis and curing with aromatic diamine

作者：Le Hoang Sinh; Shin Seunghan; Lim Dong Guk; Nguyen Ngoc Trung; Bui Thanh Son; Bae Jin Young^*

来源：Macromolecular Research, 2013, 21(10): 1105-1109.

DOI：10.1007/s13233-013-1153-z

• wholly aromatic
• liquid crystalline epoxy
• differential scanning calorimetry
• curing
• polarized optical microscopy

A novel all aromatic 2,7-naphthalene-based liquid crystalline epoxy (LCE) was synthesized successfully in this study. The thermal transition of the synthesized LCE was characterized by wide angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC), and polarized optical microscopy (POM). The characterization showed that the LCE had a low melting temperature of 65 A degrees C and was in a nematic state in temperature range of 65-75 A degrees C. The curing reaction between LCE and 4,4%26apos;-diaminodiphenylsulfone (DDS) was investigated, using 2-methylimidazole (2MI) as the reaction catalyst. Upon the addition of 1 phr of 2MI, the curing temperature was dramatically decreased from 227 to 128 A degrees C, which is 99 A degrees C lower than that of a reaction without the use of a catalyst system.

• 出版日期2013-10