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Article Dans Une Revue Journal of Applied Polymer Science Année : 2016

High elongation thermoplastic Polyester-urethanes based on widely available diacid intermediates

Résumé

A series of new ,-dihydroxy terminated polyester oligomers are synthesized from the condensation reaction of various aliphatic diols with a mixture of diacids rich in 2-methylglutaric acid, MGA, an abundant and well-defined industrial product. Their adipic acid (AA)-based counterparts are also prepared and the physico-chemical properties of both types of polyols are thoroughly characterized. All these polyester polyols are then used to prepare segmented polyurethanes following a two-stage process, by reacting them successively with 4,4-diphenylmethane diisocyanate, and 1,4-butanediol. The resulting materials are then evaluated with respect to their thermal and dynamic or static mechanical properties. The observed characteristics and behaviors are quite similar between AA- or MGA-based polyurethanes, except for the tendency of AA-based samples to display partially crystallized soft domains. Such a phenomenon is prevented in MGA-based samples because of the methyl side group, resulting in remarkably higher ultimate elongations for the new thermoplastic polyurethanes derived from MGA.
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Dates et versions

hal-01397174 , version 1 (05-03-2019)

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Marion Tharcis, Thierry Badel, Stéphane Jéol, Etienne Fleury, Françoise Mechin. High elongation thermoplastic Polyester-urethanes based on widely available diacid intermediates. Journal of Applied Polymer Science, 2016, 133 (19), pp.43410. ⟨10.1002/app.43410⟩. ⟨hal-01397174⟩
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