Show simple item record

dc.creatorLi, Yuzhan
dc.creatorBadrinarayanan, Prashanth
dc.creatorKessler, Michael
dc.date.accessioned2015-11-05T04:23:54Z
dc.date.available2015-11-05T04:23:54Z
dc.date.issued2013-05
dc.identifier.urihttp://hdl.handle.net/2376/5550
dc.description.abstractAn epoxy monomer of 4,4′-diglycidyloxybiphenyl (BP) was synthesized and cured with a tetra-functional amine, sulfanilamide (SAA), to produce novel liquid crystalline epoxy resins (LCERs). The thermal properties, liquid crystalline morphologies, and cure behavior of the monomer were studied using differential scanning calorimetry, wide angle X-ray diffraction, and polarized optical microscopy. The effects of curing condition on the glass transition temperature, coefficient of thermal expansion, and dynamic mechanical properties of the resins were determined through thermomechanical analysis and dynamic mechanical analysis, respectively. The effects of cure condition on the formation of the liquid crystalline phase were also examined. The results show that BP is not a liquid crystalline epoxy monomer and an irreversible crystal transition exists in the temperature range of 120 °C–140 °C. The use of SAA results in the formation of a smectic liquid crystalline phase. Compared to the resins cured into an amorphous network, the LCERs exhibited a polydomain structure with individual liquid crystalline domain distributed in the resin matrix, which results in better thermomechanical properties.en_US
dc.languageEnglish
dc.publisherPolymeren_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectLiquid crystalline epoxy resins (LCERs), Curing, Thermomechanical propertiesen_US
dc.titleLiquid crystalline epoxy resin based on biphenyl mesogen: Thermal characterization
dc.typeText
dc.description.citationY. Li, P. Badrinarayana, M. R. Kessler: Liquid Crystalline Epoxy Resin Based on Biphenyl Mesogen: Thermal Characterization, Polymer, 2013, 54(12), 3017-3025. doi:10.1016/j.polymer.2013.03.043.


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

  • Kessler, Michael
    This collection features research by Michael Kessler, professor in the School of Mechanical and Materials Engineering at Washington State University.

Show simple item record

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International