Evaluation of the Permeation of O₂, Co₂ and Water Vapor in Membranes of Polyetherimide/Clay National Nanocomposites

Abstract:

The membrane separation process, although is recently, is increasing in applications such as purification, fractioning and concentration of substances in several industries. The membranes to gas separation present specific advantages when compared with conventional separation process (such as, cryogenic distillation and adsorption). Composite membrane has been widely applied in gas separation. The interest in the nanotechnology development in the last decade allows the increase in the nanocomposite area due to the special properties presented by these materials. In the nanocomposite the nanometric particles are dispersed in the polymer matrix. The polymer matrix used in this work was a polyetherimide (PEI), which is the most popular polymers for the preparation of membrane due to its solvent resistance and high selectivity. These membranes were obtained from polyetherimide (PEI) with bentonite clay from Paraiba/Brazil, by solvent evaporation method, and applied to gas permeability. The membranes were characterized by permeability to O₂, CO₂ and water vapor. The results present in this study show good expectation.

• Periodical: Materials Science Forum (Volumes 727-728)
• Pages: 1570-1573
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.727-728.1570
• Online since: August 2012
• Authors: Vanessa da Nóbrega Medeiros, Amanda Melissa Damião Leite, Renê Anísio da Paz, Edcleide Maria Araújo, Luiz Antônio Pessan
• Keywords: Membrane, Nanocomposite, Polyetherimide

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