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SUMMARY:Using RAFT End-Groups for Near-Quantitative Conversion to Monomer
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20241101T160000
UID:2026-04-16-10-56-18@natsci.colostate.edu
DTSTAMP:20260416T105618
Description:About the Seminar:\n\nThough the plastic crisis continues to be
  a global concern\, the recycling of common commodity polymers has only im
 proved slightly\, even as both the amount of plastic recycled and plastics
  produced from recycling increases each year. A promising avenue to enhanc
 e recycling processes is through a deeper understanding of depolymerizatio
 n kinetics. A critical factor in these reactions is the ceiling temperatur
 e\, above which the entropic penalties outweigh the favorable enthalpic ef
 fects\, driving depolymerization. However\, conventional depolymerization 
 methods are highly energy-intensive\, limiting their widespread applicatio
 n. Recent work [1] has demonstrated significant advancements in depolymeri
 zating poly(methyl methacrylate) (PMMA) by utilizing specific end-groups t
 hat lower the energy barrier for depolymerization. This study not only exp
 ands the scope of methacrylate polymer derivatives but also evaluates the 
 efficiency of recycling depolymerized monomer into new materials. Overall\
 , this work shows a potential route for improving aspects of recycling of 
 current commodity polymers.\n\n[1] Wang\, H. S.\; Truong\, N. P.\; Pei\, Z
 .\; Coote\, M. L.\; Anastasaki\, A. Reversing RAFT Polymerization: Near-Qu
 antitative Monomer Generation Via a Catalyst-Free Depolymerization Approac
 h. J. Am. Chem. Soc. 2022\, 144 (10)\, 4678–4684. https://doi.org/10.102
 1/jacs.2c00963. 4:00 pm
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