Synthesis and physical properties of new layered double hydroxides based on ionic liquids: Application to a polylactide matrix

Sébastien Livi, Valeria Bugatti, Luis Estevez, Jannick Duchet-Rumeau, Emmanuel P. Giannelis

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Ionic liquids based on tetraalkylphosphonium salts combined with different anions (decanoate and dodecylsulfonate) have been used as intercalating agents of layered double hydroxides (LDHs) by ion exchange. The synthesized phosphonium-treated LDHs display a dramatically improved thermal degradation and a significant increase in the interlayer distance as confirmed by thermogravimetric analysis (TGA) and X-ray Diffraction (XRD), respectively. To highlight the effect of thermostable ionic liquids, a very low amount of LDHs has been introduced within a polylactide (PLA) matrix and PLA/LDHs nanocomposites have been processed in melt by twin-screw extrusion. Then, transmission electron microscopy (TEM) analysis has been used to investigate the influence of ILs on the different morphologies of these nanocomposites. Even though the thermal stability of PLA matrix decreased, an excellent stiffness-toughness compromise has been obtained. © 2012 Elsevier Inc.
Original languageEnglish (US)
Pages (from-to)123-129
Number of pages7
JournalJournal of Colloid and Interface Science
Volume388
Issue number1
DOIs
StatePublished - Dec 2012
Externally publishedYes

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