Gas barrier properties of nanocomposites based on in situ polymerized poly(n-butyl methacrylate) in the presence of surface modified montmorillonite

0338835 - ÚMCH 2010 RIV NL eng J - Journal Article
Herrera-Alonso, J. M. - Sedláková, Zdeňka - Marand, E.
Gas barrier properties of nanocomposites based on in situ polymerized poly(n-butyl methacrylate) in the presence of surface modified montmorillonite.
Journal of Membrane Science. Roč. 349, 1-2 (2010), s. 251-257. ISSN 0376-7388. E-ISSN 1873-3123
R&D Projects: GA AV ČR KAN100500651; GA MŠMT ME09058
Institutional research plan: CEZ:AV0Z40500505
Keywords : barrier membranes * nanocomposites * montmorillonite
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 3.673, year: 2010

Barrier membranes were produced by the in situ polymerization of n(butylacrylate) in the presence of surface modified natural montmorillonite. Organoclay with anchoring monomer was prepared via ion exchange reactions of montmorillonite with (acryloyloxy) ethyl alkylammonium cations. The second stage of the process comprised of the in situ polymerization of n-butyl methacrylate and the unsaturated acryloxy ethyl groups anchored on the surface of the clay. Resulting membranes were characterized in terms of their microstructure and diffraction (XRD), their thermal properties (TGA and DSC), and gas permeation properties. The resulting exfoliated morphology led to a decrease in gas permeability. Gas barrier properties of the nanocomposites were compared to those predicted by phenomenological models such as those of Cussler and Nielsen.
Permanent Link: http://hdl.handle.net/11104/0005718