New and Functional Cyclic Carbonates for Polymer Applications

Identificador:  TDX:3250

Handle: https://hdl.handle.net/20.500.11797/TDX3250

Autors:  Maquilón Albaladejo, Cristina

Resum:
Carbon dioxide (CO2) has been present in atmosphere since early stages of the Earth. CO2 is one of the gases components responsible of the greenhouse effect, responsible of the regulation of the planet surface temperature. However its concentration in the atmosphere has been growning dramatically since the industrial revolution, specially in the last century which has implied a negative effect in the global climate. In this concern, developing new CO2 transformation with the aim of reducing atmospheric levels has become an active field of research in the last decades. Our group has focused in the utilization of CO2 for the synthesis of cyclic carbonates (CCs) via [3+2] cycloaddition. In this context, chapter 2 describes the synthesis and characterization of five CCs stereo/regio-isomers from a single epoxyalcohol derived from cyclooctadiene, including two unusual trans-configured CCs with potential in Ring Opening Polymerization (ROP) application. The third chapter focuses in the synthesis of 6-membered cyclic carbonates (6MCCs) by means of a photocatalytic process. The ROP potential of some of the 6MCCs prepared is also evaluated. Finally, chapter 4 summarises our efforts to synthesize non-isocyanate polyurethanes (NIPUs) from a biobased dicarbonate monomer, derived from beta-elemene and commercially relevant diamines. In this chapter the physical properties of one of the NIPUs synthesized are also discussed