Polymers from Carbon Dioxide Polycarbonates, Polythiocarbonates, and Polyurethanes

Polymers from Carbon Dioxide Polycarbonates, Polythiocarbonates, and Polyurethanes 

Donald J. Darensbourg, Jeremy R. Andreatta, and Adriana I. Moncada 

An alternative source of polycarbonate derived from C02 involves the alternating copolymerization of oxetane and C02 (Equation 8.1). 

The ring-strain energy of oxetane is less than that of PO (106.7k] mol 1 versus llTZkJmoT1) hence, its copolymerization with C02 is less favored thermodynamically [3], Nevertheless, the copolymerization of oxetane and C02 occurs readily under similar catalytic conditions, producing poly(trimethylene carbonate), 

Carbon Dioxide as Chemical Feedstock. Edited by Michele Aresta Copyright 2010 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim ISBN 978-3-527-32475-0 

---