Study of polyurethane formulations containing Diols obtained via glycolysis of poly(ethylene terephthalate) (PET) by oligoesters Diols through a reactive extrusion process

Gael Colomines (1, 2) , Franck Rivas (2) , Marie-Laure Lacoste (2) , Jean Jacques Robin (1, 2, 3)

1 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 CNRS UMR 5076 - Laboratoire de chimie Macromoléculaire
3 OMEMF - Organisation moléculaire (évolution et matériaux fluores)

The glycolysis of PET by oligoester diols in the presence of zinc acetate was carried out in two successive twin-screw extruders with total residence times of 4 min and without solvent. These new glycolysates were analyzed and used in polyurethane formulation with a commercial polyol. The reactivity of these formulations was studied. The mechanical properties, thermal and swelling behavior of these polyurethanes were investigated. Mechanical properties are improved with the addition of glycolysate. The thermal e behavior is not modified with the addition of glycolysate. The swelling behavior of the material depends on the solvent nature. The addition of glycolysate allows a decrease in material swelling in chloroform but increases this swelling in acetone.

Mots clés: crosslinking • curing of polymers • degradation • networks • poly(ethylene terephthalate) • polyurethanes • reactive extrusion • recycling • swelling • thermogravimetric analysis (TGA) • waste

Domaines: Polymères

Gael Colomines, Franck Rivas, Marie-Laure Lacoste, Jean Jacques Robin. Study of polyurethane formulations containing Diols obtained via glycolysis of poly(ethylene terephthalate) (PET) by oligoesters Diols through a reactive extrusion process. Macromolecular Materials and Engineering, 2005, 290 (7), pp.710. ⟨10.1002/mame.200400391⟩. ⟨hal-00381592⟩