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

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Abstract

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 °C and was in a nematic state in temperature range of 65–75 °C. The curing reaction between LCE and 4,4′-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 °C, which is 99 °C lower than that of a reaction without the use of a catalyst system.

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Authors and Affiliations

  1. Department of Polymer Science and Engineering, Sungkyunkwan University, Gyeonggi, 440-746, Korea

    Le Hoang Sinh, Nguyen Ngoc Trung, Bui Thanh Son & Jin-Young Bae

  2. Korea Institute of Industrial Technology, Gyeonggi, 426-171, Korea

    Seunghan Shin & Dong-Guk Lim

Authors
  1. Le Hoang Sinh
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  2. Seunghan Shin
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  3. Dong-Guk Lim
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  4. Nguyen Ngoc Trung
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  5. Bui Thanh Son
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  6. Jin-Young Bae
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Correspondence to Jin-Young Bae.

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The image from this article is used as the cover image of Volume 21, Issue 10.

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Sinh, L.H., Shin, S., Lim, DG. et al. A novel wholly aromatic liquid crystalline epoxy monomer based on 2,7-naphthalene mesogen: Synthesis and curing with aromatic diamine. Macromol. Res. 21, 1105–1109 (2013). https://doi.org/10.1007/s13233-013-1153-z

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  • DOI: https://doi.org/10.1007/s13233-013-1153-z

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