Thermoplastic polyurethanes with glycolysate intermediates from polyurethane waste recycling

Tamara Calvo-Correas; Lorena Ugarte; Patrycja Jutrzenka Trzebiatowska; Sanzberro Rafael; Janusz Datta; M. Ángeles Corcueraa; Arantxa Eceiza

doi:10.1016/j.polymdegradstab.2017.09.001

Thermoplastic polyurethanes with glycolysate intermediates from polyurethane waste recycling

Abstract

The polyol is a major component in polyurethane formulations and therefore introducing to the formulation recycled polyol (obtained during decomposition process) allows decreasing the usage of pure petrochemical components. In this work, thermoplastic polyurethanes were prepared using various mixtures of a petrochemical macrodiol poly(ethylene-butylene adipate)diol (PEBA) and a recycled glycolysate intermediate, called glycolysate polyol, in a two-step synthesis procedure with 4,4-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD). The glycolysate polyol was obtained during glycolysis process of polyurethane elastomer using ethylene glycol as a decomposing agent. Glycolysate polyol showed a higher hydroxyl value (199 mg KOH g−1) and glass transition temperature (Tg, −50.1 °C) than pure macrodiol (PEBA). The maximum concentration of glycolysate polyol was 25 wt% over the total polyol. Synthesized polyurethanes had similar chemical structure compared to the polyurethane synthesized without glycolysate polyol, confirmed by Fourier transform infrared spectroscopy. On the one hand, higher contents of glycolysate polyol resulted in higher Tg and a slightly lower thermal stability analyzed by thermogravimetric analysis. On the other hand, improved thermomechanical and mechanical properties were obtained in polyurethanes with partial replacement of pure macrodiol.

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Authors (7)

Tamara Calvo-Correas mgr
- University of the Basque Country Department of Chemical and Environmental Engineering
Lorena Ugarte PhD
- University of the Basque Country Department of Chemical and Environmental Engineering
Patrycja Jutrzenka Trzebiatowska
Sanzberro Rafael
- University of the Basque Country Department of Chemical and Environmental Engineering
Janusz Datta prof. dr hab. inż.
M. Ángeles Corcueraa
- University of the Basque Country Department of Chemical and Environmental Engineering
Arantxa Eceiza Prof.
- University of the Basque Country Department of Chemical and Environmental Engineering

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DOI:: Digital Object Identifier (open in new tab) 10.1016/j.polymdegradstab.2017.09.001
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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: POLYMER DEGRADATION AND STABILITY no. 144, pages 411 - 419,
ISSN: 0141-3910
Language:: English
Publication year:: 2017
Bibliographic description:: Calvo-Correas T., Ugarte L., Jutrzenka Trzebiatowska P., Rafael S., Datta J., Corcueraa M., Eceiza A.: Thermoplastic polyurethanes with glycolysate intermediates from polyurethane waste recycling// POLYMER DEGRADATION AND STABILITY. -Vol. 144, (2017), s.411-419
DOI:: Digital Object Identifier (open in new tab) 10.1016/j.polymdegradstab.2017.09.001
Verified by:: Gdańsk University of Technology