Block Copolymers Self-Assembly Allows Obtaining Tunable Micro or Nanoporous Membranes or Depth Filters Based on PMMA; Fabrication Method and Nanostructures

descriptionPublicationkeyboard_double_arrow_right Article 21 Feb 2014 Spain English Publisher:American Chemical Society (ACS)Journal:The Journal of Physical Chemistry C, volume 118, pages 4,656-4,663 (issn: 1932-7447, eissn: 1932-7455,

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Authors: Javier Pinto; Michel Dumon; Miguel A. Rodriguez-Perez; Ricardo Garcia; Christian Dietz;

doi: 10.1021/jp409803u

handle: 10261/98777

Block Copolymers Self-Assembly Allows Obtaining Tunable Micro or Nanoporous Membranes or Depth Filters Based on PMMA; Fabrication Method and Nanostructures

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Abstract

An environmentally friendly method to produce tunable bulk micro or nanoporous structures is presented. Nano- and micro-porous structures are obtained by gas dissolution foaming using CO2, following the pattern of polymer blends between poly(methylmethacrylate) (PMMA) and a triblock copolymer, namely poly(methylmethacrylate)-co-poly(butyl acrylate)-co- poly(methyl methacrylate) (MAM) blends nanostructuration. Membranes or depth filters can be produced by this method, varying the amount of the triblock copolymer in the blend. Furthermore, main characteristics, such as the average pore size and porosity can be finely tuned by adjusting the process parameters (temperature or pressure) during gas foaming. © 2014 American Chemical Society.

Financial assistance from MCINN (MAT2009-14001-C02-01 and MAT2012-34901), Junta of Castile and Leon (VA174A12-2 and VA035U13) and FPU grant AP2008-03603 (J.P.) from the Spanish Ministry of Education is gratefully acknowledged.

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Country

Spain

Related Organizations

Spanish National Research Council
Spain
University of Bordeaux
France
Centre national de la recherche scientifique
France
University of Valladolid
Spain
Laboratoire de Chimie des Polymères Organiques
France

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