Supercritical CO2–Ionic Liquids: A Successful Wedding To Prepare Biopolymer Foams

Supercritical CO2–Ionic Liquids: A Successful Wedding To Prepare Biopolymer Foams

In this work, tetraalkylphosphonium and dialkyl imidazolium ionic liquids have been studied as surfactant agents of layered silicates (montmorillonite, MMT). The influence of the chemical nature of the cations as well as the counteranions on the thermal behavior (TGA), on the structural analysis (XR...

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Veröffentlicht in:ACS sustainable chemistry & engineering 2016-02, Vol.4 (2), p.461-470
Hauptverfasser: Livi, Sébastien, C. Lins, Luanda, Sar, Gabriela, Gérard, Jean-François, Duchet-Rumeau, Jannick
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Material chemistry
Polymers
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container_issue 2
container_start_page 461
container_title ACS sustainable chemistry & engineering
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creator Livi, Sébastien
C. Lins, Luanda
Sar, Gabriela
Gérard, Jean-François
Duchet-Rumeau, Jannick
description In this work, tetraalkylphosphonium and dialkyl imidazolium ionic liquids have been studied as surfactant agents of layered silicates (montmorillonite, MMT). The influence of the chemical nature of the cations as well as the counteranions on the thermal behavior (TGA), on the structural analysis (XRD) and on the surface energies of organically modified montmorillonites has been investigated. Then, poly­(butylene adipate-co-terephthalate) (PBAT)–clay nanocomposites were processed by melt mixing using a twin screw extruder in order to achieve the better dispersion of MMT and were used to prepare cellular foams with supercritical carbon dioxide (ScCO2). Thus, a small amount (2 wt %) of imidazolium-treated montmorillonite is the relevant candidate to decrease the cell size (600 to 125 μm).
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subjects Chemical Sciences
Material chemistry
Polymers
title Supercritical CO2–Ionic Liquids: A Successful Wedding To Prepare Biopolymer Foams
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