Recovery of Flexible Polyurethane Foam Waste for Efficient Reuse in Industrial Formulations.

ABSTRACT: Ester polyurethane (PU) foam waste was reacted at atmospheric pressure in an autoclave and using microwaves with diethylene glycol (DEG) at different PU/DEG ratios in the presence of diethanolamine as a catalyst to find the glycolysis conditions that allow for the improved recovery of the PU foam waste and enable the recycling of the whole glycolysis product in foam formulations suitable for industrial application. The recycled polyol was characterized by dynamic viscosity, hydroxyl number, water content, and density, while thermal stability was assessed using thermogravimetric analysis. In the PU foam formulation, 1% and 5% of the glycolyzed material was reused. The relationship between the reuse level of the recycled polyol and the physical properties of the foam was thoroughly investiga

SUBMITTER: Kiss G 

PROVIDER: S-EPMC7407941 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature