Monday, November 13, 2023 2pm to 3pm
About this Event
4001 Discovery Dr., Boulder, CO 80309
This presentation will share three short stories focused on the make, use, and recycling of polymers with a focus on sustainability. In the first story, the development and application of organocatalyzed atom transfer radical polymerization using organic photoredox catalysts driven by visible light as well as their evolution and application toward challenging reductions including Birch reductions and PFAS remediation. In the second story, the synthesis and self-assembly of molecular bottlebrush block copolymers to photonic crystal coatings for greener structural coatings will be shared. In the third story an approach toward chemically recyclable polyolefin-like multiblock polymers with diverse mechanical properties through the construction of multiblock polymers from hard and soft oligomeric building blocks will be discussed. The multiblock polymers exhibit broad mechanical properties, spanning elastomers to plastomers to thermoplastics, while integrating a high melting transition temperature (Tm) and low glass transition temperature (Tg) making them suitable for use across diverse applications (Tmas high as 128 °C and Tg as low as -60 °C). After use, the different plastics can be combined and efficiently deconstructed back to the fundamental hard and soft building blocks for separation and repolymerization to realize a closed-loop recycling process.
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