08/17/17 -1:00 PM to 2:00 PM
Special Seminar: Antoine Buchard, Ph.D.
Making polymers from sugars and CO2
In this talk, I will present how our group at the University of Bath in the United Kingdom have been using sugars and CO2 as renewable feedstocks for the creation of novel polymers. We have, in our group, developed a procedure for the synthesis of cyclic carbonates from diols and CO2 under mild conditions (room temperature, low CO2 pressure), which presents an alternative to the traditional use of phosgene derivatives for monomer synthesis. I will describe how we have applied this synthetic route to the various sugar derivatives (e.g. from mannose, thymidine and 2-deoxyribose), to produce several novel cyclic carbonate monomers, which are sometimes not accessible via traditional phosgene methods. In particular, I will show how we have used DFT calculations to guide our synthetic targets. Subsequent controlled Ring-Opening Polymerisation (ROP) of these new monomers is possible using organocatalysts or metal precursors, in solution or in the melt, which yields aliphatic polycarbonates featuring a carbohydrate backbone. The key properties of these polymers, including preliminary degradability studies, will be presented. I will also demonstrate that copolymerisation, as well as pre and post-polymerisation functionalisation is possible and can be used to further tune the polymer properties. Finally, I will give a brief overview of other research areas we are involved in (coordination chemistry for ROP catalyst development, DFT mechanistic investigations, and other sustainable monomer synthesis methods, in particular H2O2-mediated Baeyer-Villiger oxidation).
1. RSC Adv., 2015, 5, 39404-39408.
2. Macromolecules, 2016, 49, 7165-7169.
3. Polym. Chem, 2017, 8, 1714-1721.
4. Polym. Chem, 2017, 8, 2093-2104.
Event DetailsLocation: Kate & Michael Bárány Conference Room (117/119 Smith Hall)Host: Professor Theresa Reineke