References of "Labruyère, Céline"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailTransport properties of organic vapours in silicone/clay nanocomposites
Labruyère, Céline ULg; Gorrasi, G.; Monteverde, Fabien et al

in Polymer (2009), 50(15), 3626-3637

Poly(dimethylsiloxane) (PDMS)/clay nanocomposites have been synthesized using a novel ω-ammonium functionalized oligo-PDMS surfactant (PDMS–N+(CH3)3) and processed in membrane form. In order to relate the ... [more ▼]

Poly(dimethylsiloxane) (PDMS)/clay nanocomposites have been synthesized using a novel ω-ammonium functionalized oligo-PDMS surfactant (PDMS–N+(CH3)3) and processed in membrane form. In order to relate the clay morphological structure to the degree of dispersion and physical properties of the membrane, the clay ion-exchanged by PDMS–N+(CH3)3 has been compared to a non-exchanged sodium MMT and to two organoclays organo-modified by using either non-functional alkyl ammonium cations (C38H80N+) or hydroxyalkyl ammonium (C22H48ON+) cations. Morphological analysis and transport properties (sorption, diffusion and permeability) have been investigated using two penetrants: acetone and n-hexane. The mechanical and rheological properties of the PDMS nanocomposite membranes have also been studied. It has been found a significant effect of the clay organo-modifier on the morphology, physical and barrier properties of the systems. [less ▲]

Detailed reference viewed: 18 (5 ULg)
Full Text
Peer Reviewed
See detailExfoliation of clays in poly(dimethylsiloxane) rubber using an unexpected couple: a silicone surfactant and water
Labruyère, Céline ULg; Monteverde, Fabien; Alexandre, Michaël ULg et al

in Journal of Nanoscience and Nanotechnology (2009), 9(4), 2731-2738

Poly(dimethylsiloxane) (PDMS)/montmorillonite (MMT) composites have been prepared using a newly synthesized ω-ammonium functionalized poly(dimethylsiloxane) compatibilizer coupled with a dispersion ... [more ▼]

Poly(dimethylsiloxane) (PDMS)/montmorillonite (MMT) composites have been prepared using a newly synthesized ω-ammonium functionalized poly(dimethylsiloxane) compatibilizer coupled with a dispersion technique in water. The organoclay containing the new siloxane surfactant was characterized by TGA and XRD. For the first time, a nanoscopic dispersion of MMT nanoplatelets in the PDMS composite cured by hydrosilylation and a good compatibility between clay layers and matrix were obtained. The beneficial effect of both the surfactant and the water onto clay nanoplatelet dispersion was evaluated by different microscopy techniques and by measuring different properties such as the viscosity of the uncured PDMS/MMT nanodispersions, and the swelling rate and Young's modulus of the cured PDMS/MMT nanocomposites. [less ▲]

Detailed reference viewed: 60 (2 ULg)