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Synthesis, co-polymerization, and carbonization of Mono-ortho-diynylarene (MODA) and Bis-ortho-diynylarene (BODA) Monomers targeted for Carbon-Carbon Composites

High temperature polyarylene networks produced through the step-growth thermal cyclopolymerization of mono-ortho-diynylarene (MODA) and bis-ortho-diynylarene (BODA) monomers have been shown to produce high yielding glassy carbon once pyrolyzed at 1000 °C. In this study the homo- and co-polymerization of both monomers will be studied, and the effects of copolymer composition on the processability when applied to carbonization and carbon-carbon composites. The carbon products from these high temperature polymer matrices will also be characterized. MODA and BODA are prepared through a Sonogashira coupling reaction and are polymerized through a heat-initiated Bergman Cyclization reaction mechanism. This work seeks to show how BODA-MODA copolymers can attenuate current composite processing limitations, and improve mechanical properties while retaining high temperature properties including high carbon yields.

Identiferoai:union.ndltd.org:MSSTATE/oai:scholarsjunction.msstate.edu:td-5198
Date07 August 2020
CreatorsTesfaye, Solomon
PublisherScholars Junction
Source SetsMississippi State University
Detected LanguageEnglish
Typetext
Formatapplication/pdf
SourceTheses and Dissertations

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