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Control of Static Electricity By Light and Polymer Mechanochemistry
24 December 2021 @ 16:00 - 17:00
Bilge Baytekin
MSN Graduate Program and UNAM
The mechanism of static electricity generation and mitigation on insulator surfaces upon rubbing/contact is one of the few scientific questions that have remained unanswered for millennia. Static charging (tribocharging) of insulators is not just a scientific mystery – it is also a significant problem, especially critical for various industries, e.g., polymer, pharmaceuticals, electronics, and space. Several methods of tribocharge mitigation exist in practice; however, none can reach the practicality of using light in the process. Here I will present light-controlled mitigation of triboelectric charges on common polymers. The tribocharged polymers are discharged upon illumination with appropriate wavelengths of light in the presence of a mediator organic dye. Our method provides spatial and temporal control on mitigation of static charges on common polymer surfaces by a mechanism that involves photoexcitation of organic dyes, allowing an additional ‘wavelength control’.
Mechanochemistry of organics and polymers has long been studied, but the link between the static electricity of polymers and mechanochemistry – despite its obvious presence – is still overlooked. In this talk, I present this chemical link and show how the mechanochemical pathways and the generated mechanospecies can be used to make composites in a green chemistry way.
Konuşmacı hakkında
Bilge Baytekin is an Assistant Professor in the Chemistry Department of Bilkent University. She received her Ph.D. from Freie Universitat Berlin and pursued her postdoctoral studies (2009-2014) at Northwestern University and Harvard University. Her research interests include static electricity, organic and polymer mechanochemistry, smart materials, and soft robotics. She is the recipient of the Loreal Unesco for Women in Science, TÜBA GEBIP, BAGEP, Mustafa Parlar Vakfı, TÜBİTAK Teşvik Awards, and 2019 Rising Star Award from the Electrostatics Society of America (ESA). She likes poetry and tea. She has a lovely daughter.
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