About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
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Preceramic Polymers; Synthesis, Processing, Modeling, and Derived Ceramics
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| Presentation Title |
Ceramic Yields of Preceramic Polymer Grafted Nanoparticles using Conventional and Photothermal Heating |
| Author(s) |
Robert Hickey, Benjamin Stoval, Jensen Sevening, Kavindi Sabaratne, Anthony Katona, Yuki Fan, Benjamin Lear |
| On-Site Speaker (Planned) |
Robert Hickey |
| Abstract Scope |
Polymer derived ceramics are a critical class of materials. The chemical diversity of the polymer precursors and the addition of nanoparticles before conversion into ceramics is an exciting handle to tailor specific properties. Although there are well-established procedures pertaining to the synthesis of preceramic polymers, there is a disconnect between ceramic product formation, processing conditions, and polymer molecular parameters, especially with added nanoparticles. The presentation will discuss ceramic yield and composition in preceramic homopolymer and polymer grafted nanoparticle materials using poly(dimethylsiloxane) (PDMS) and poly(cyclootenyldecaborane) (PCD), and two different conversion methods: conventional and photothermal heating. Conversion of PDMS and PCD into ceramic materials using conventional and photothermal heating results in carbon-rich silicon oxycarbide (SiOC) and boron carbide (B4C), respectively. Photothermal heating is shown to provide spatially resolved ceramic features due to control of heating/cooling cycles, allowing for imprinting optical resolution of light (nanometers) into the morphology of the resulting ceramic. |