| Grant number: | 21/06549-0 |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| Start date: | October 01, 2021 |
| End date: | December 31, 2024 |
| Field of knowledge: | Physical Sciences and Mathematics - Chemistry - Organic Chemistry |
| Principal Investigator: | Antonio Carlos Bender Burtoloso |
| Grantee: | Jorge Andrés Mora Vargas |
| Host Institution: | Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil |
| Company: | Universidade de São Paulo (USP). Escola Politécnica (EP) |
| Associated research grant: | 20/15230-5 - Research Centre for Greenhouse Gas Innovation - RCG2I, AP.PCPE |
Abstract Polyurethanes (PUs) are one of the most important types of polymeric materials due to their applications in different fields of industrial chemistry because of their properties. Their main way of obtaining it is trough polyaddition reaction of isocyanates and polyols. The isocyanate monomers that are used as starting material are synthesized from toxic phosgene, therefore, several greener synthetic routes are being developed. Here, we will propose the synthesis of new and known isocyanates substituting phosgene for carbon dioxide (CO2) as a renewable source of C=O and using primary amines, which can be obtained from important molecular platforms synthesized from biomass. In this step, several guanidines will be used as CO2 sequestrants and activators. These catalysts are an alternative to replace conventional catalysts based on transition metals, which are sometimes expensive. On the other hand, new and known polyols will be synthetized from molecular platforms obtained from biomass, such as, ethyl acetate, succinic and levulinic acids. Both, isocyanates and polyols will be used as starting materials for the synthesis of important PUs by polyaddition reaction. (AU) | |
| News published in Agência FAPESP Newsletter about the scholarship: | |
| More itemsLess items | |
| TITULO | |
| Articles published in other media outlets ( ): | |
| More itemsLess items | |
| VEICULO: TITULO (DATA) | |
| VEICULO: TITULO (DATA) | |