OSU Navigation Bar

The Ohio State University University Libraries Knowledge Bank

The Synthesis of Biodegradable Polycarbonates and Polyesters from Renewable Resources Using Highly Active (Porphyrin)Cr(III) Chloride Catalysts

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/48358

Show full item record

Files Size Format View
ChatterjeeC_Hayes.pdf 375.7Kb PDF View/Open

Title: The Synthesis of Biodegradable Polycarbonates and Polyesters from Renewable Resources Using Highly Active (Porphyrin)Cr(III) Chloride Catalysts
Creators: Chatterjee, Chandrani
Advisor: Chisholm, Malcolm H.
Issue Date: 2011-03
Abstract: A series of porphyrin metal(III) compounds of general formula LMX (where L = tetraphenylporphyrin, tetrakispentafluorophenylporphyrin and octaethylporphyrin, M = Al, Cr, Co, and X = Cl- and OEt) has been synthesized and studied as catalysts for the ring opening polymerization of propylene oxide (PO) as well as copolymerization of PO with CO2 to produce polypropylene oxide (PPO), polypropylene carbonate (PPC) and propylene carbonate (PC), respectively. The electronic nature of the porphyrin ligand and the addition of Lewis basic cocatalysts e.g. DMAP and PPN+Cl- showed a dramatic influence on the catalytic TOF, product selectivity and polymeric microstructure. The origin of these effects was attributed to the electronic factors associated with the individual reaction steps and equilibriums.
Embargo: A three-year embargo was granted for this item.
Series/Report no.: 2011 Edward F. Hayes Graduate Research Forum. 25th
Keywords: polycarbonate
porphyrin
chromium
catalyst
turn over frequency
Description: Mathematical and Physical Sciences: 3rd Place (The Ohio State University Edward F. Hayes Graduate Research Forum)
URI: http://hdl.handle.net/1811/48358
Bookmark and Share
Attribution-NonCommercial-NoDerivs 3.0 Unported This item is licensed under a Creative Commons License:
Attribution-NonCommercial-NoDerivs 3.0 Unported