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Cho SH, Lee JY, Douglas EP. Synthesis and Thermal Properties of Liquid Crystalline Thermoset containing Rigid-Rod Epoxy. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008306056484] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
4,4′-diglycidyloxy- α-methylstilbene (DOMS) and a novel liquid crystalline thermoset, D2A1 which is obtained from the reaction between DOMS and aniline were synthesized. The thermosets have been characterized with cross-polarized optical microscopy, differential scanning calorimetry, thermogravimetric analysis (TGA) and other techniques. D2A1 was smectic at room temperature and turned to nematic at 85°C upon heating, then turned isotropic at 135°C. Activation energies for decomposition ( Ed) using TGA were calculated according to the technique of Flynn-Wall to determine Ed as a function of conversion α by a weight loss process.
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Affiliation(s)
- Seung Hyun Cho
- Polymer Technology Institute, Sungkyunkwan University, Suwon 440-746, Korea
| | - Jun Young Lee
- Polymer Technology Institute, Sungkyunkwan University, Suwon 440-746, Korea
| | - Elliot P. Douglas
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, USA
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Al-Haik MS, Trinkle S, Momotyuk O, Roeder BT, Kemper K, Hussaini MY, Malloy KJ. Nanocharacterization of Proton Radiation Damage on Magnetically Oriented Epoxy. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2007. [DOI: 10.1080/10236660701551638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Robinson EJ, Douglas EP, Mecholsky JJ. The effect of stoichiometry on the fracture toughness of a liquid crystalline epoxy. POLYM ENG SCI 2004. [DOI: 10.1002/pen.10947] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Al-Haik MS, Garmestani H, Li DS, Hussaini MY, Sablin SS, Tannenbaum R, Dahmen K. Mechanical properties of magnetically oriented epoxy. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/polb.20037] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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