Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants

Novel polyurethane-based binders, specifically designed for environmentally responsible rocket propellant composites, were obtained by employing the polyester-polyols that resulted from the degradation of polyethylene terephthalate waste. A new class of “greener” rocket propellants, comprising polyu...

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Autores principales:	Florin Marian Dîrloman, Gabriela Toader, Traian Rotariu, Tudor Viorel Țigănescu, Raluca Elena Ginghină, Răzvan Petre, Florentina Alexe, Mihai Ionuț Ungureanu, Edina Rusen, Aurel Diacon, Adi Ghebaur, Monica Duldner, Alina Elena Coman, Robert Țincu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	polyethylene terephthalate recycling polyurethane binder polymeric composite rocket propellant mechanical properties Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/588521d3e8fa4c40b797df4b9a10324c
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spelling	oai:doaj.org-article:588521d3e8fa4c40b797df4b9a10324c2021-11-11T18:48:29ZNovel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants10.3390/polym132138282073-4360https://doaj.org/article/588521d3e8fa4c40b797df4b9a10324c2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3828https://doaj.org/toc/2073-4360Novel polyurethane-based binders, specifically designed for environmentally responsible rocket propellant composites, were obtained by employing the polyester-polyols that resulted from the degradation of polyethylene terephthalate waste. A new class of “greener” rocket propellants, comprising polyurethanes (based on recycled PET) as the binder, phase stabilized ammonium nitrate (PSAN) as the eco-friendly oxidizer, and triethylene glycol dinitrate (TEGDN) as the energetic plasticizer, together with aluminum as fuel and Fe<sub>2</sub>O<sub>3</sub> as the catalyst, is herein reported. The components of the energetic mixtures were investigated (individually and as composite materials) through specific analytical tools: <sup>1</sup>H-NMR, FT-IR, SEM-EDX, DTA and TGA, tensile and compression tests, DMA, and micro-CT. Moreover, the feasibility of this innovative solution is sustained by the ballistic performances exhibited by these composite materials in a subscale rocket motor, proving that these new formulations are suitable for rocket propellant applications.Florin Marian DîrlomanGabriela ToaderTraian RotariuTudor Viorel ȚigănescuRaluca Elena GinghinăRăzvan PetreFlorentina AlexeMihai Ionuț UngureanuEdina RusenAurel DiaconAdi GhebaurMonica DuldnerAlina Elena ComanRobert ȚincuMDPI AGarticlepolyethylene terephthalate recyclingpolyurethanebinderpolymeric compositerocket propellantmechanical propertiesOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3828, p 3828 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	polyethylene terephthalate recycling polyurethane binder polymeric composite rocket propellant mechanical properties Organic chemistry QD241-441
spellingShingle	polyethylene terephthalate recycling polyurethane binder polymeric composite rocket propellant mechanical properties Organic chemistry QD241-441 Florin Marian Dîrloman Gabriela Toader Traian Rotariu Tudor Viorel Țigănescu Raluca Elena Ginghină Răzvan Petre Florentina Alexe Mihai Ionuț Ungureanu Edina Rusen Aurel Diacon Adi Ghebaur Monica Duldner Alina Elena Coman Robert Țincu Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants
description	Novel polyurethane-based binders, specifically designed for environmentally responsible rocket propellant composites, were obtained by employing the polyester-polyols that resulted from the degradation of polyethylene terephthalate waste. A new class of “greener” rocket propellants, comprising polyurethanes (based on recycled PET) as the binder, phase stabilized ammonium nitrate (PSAN) as the eco-friendly oxidizer, and triethylene glycol dinitrate (TEGDN) as the energetic plasticizer, together with aluminum as fuel and Fe<sub>2</sub>O<sub>3</sub> as the catalyst, is herein reported. The components of the energetic mixtures were investigated (individually and as composite materials) through specific analytical tools: <sup>1</sup>H-NMR, FT-IR, SEM-EDX, DTA and TGA, tensile and compression tests, DMA, and micro-CT. Moreover, the feasibility of this innovative solution is sustained by the ballistic performances exhibited by these composite materials in a subscale rocket motor, proving that these new formulations are suitable for rocket propellant applications.
format	article
author	Florin Marian Dîrloman Gabriela Toader Traian Rotariu Tudor Viorel Țigănescu Raluca Elena Ginghină Răzvan Petre Florentina Alexe Mihai Ionuț Ungureanu Edina Rusen Aurel Diacon Adi Ghebaur Monica Duldner Alina Elena Coman Robert Țincu
author_facet	Florin Marian Dîrloman Gabriela Toader Traian Rotariu Tudor Viorel Țigănescu Raluca Elena Ginghină Răzvan Petre Florentina Alexe Mihai Ionuț Ungureanu Edina Rusen Aurel Diacon Adi Ghebaur Monica Duldner Alina Elena Coman Robert Țincu
author_sort	Florin Marian Dîrloman
title	Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants
title_short	Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants
title_full	Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants
title_fullStr	Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants
title_full_unstemmed	Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants
title_sort	novel polyurethanes based on recycled polyethylene terephthalate: synthesis, characterization, and formulation of binders for environmentally responsible rocket propellants
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/588521d3e8fa4c40b797df4b9a10324c
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Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants

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