Nuevas membranas de separación de gases obtenidas por pirólisis parcial

  1. Laura Matesanz Niño 1
  2. Pedro Prádanos
  3. Antonio Hernandez 1
  4. Jesús Á. de Miguel 1
  5. José G. de la Campa
  6. Cristina Álvarez 2
  7. Laura Palacio
  8. Michele Galizia 3
  9. Ángel E. Lozano
  10. Alfonso González-Ortega
  1. 1 Universidad de Valladolid
    info

    Universidad de Valladolid

    Valladolid, España

    ROR https://ror.org/01fvbaw18

  2. 2 Instituto de Ciencia y Tecnología de Polímeros(ICTP-CSIC) Madrid
  3. 3 University of Oklahoma
    info

    University of Oklahoma

    Norman, Estados Unidos

    ROR https://ror.org/02aqsxs83

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Revista:
Revista de plásticos modernos: Ciencia y tecnología de polímeros

ISSN: 0034-8708

Ano de publicación: 2020

Título do exemplar: Innovaciones en polímeros

Volume: 119

Número: 753

Tipo: Artigo

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Outras publicacións en: Revista de plásticos modernos: Ciencia y tecnología de polímeros

Resumo

In this work, a series of gas separation membranes has been obtained through the partial pyrolysis of mixtures of aromatic copolyimides (PIs), in which one of the aromatic comonomers is 3,5-diaminobenzoic acid (DABA), and aliphatic-aromatic copolyimides, which have poly(ethylene oxide) (PEO) groups in the aliphatic part and carboxyl groups in the aromatic part (PI-PEOs). These polymer mixtures could be processed as membranes by a casting method, which were then thermal treated to selectively remove the ethylene oxide units: at temperatures below 400 ºC in an inert atmosphere and below 300ºC when an air atmosphere was used. This thermal treatment produced cross-linked materials with good mechanical properties to withstand the high pressures used in the gas separation processes. In addition, all membranes showed excellent gas separation properties, low physical ageing and high resistance to plasticization

Fonte de datos: Dialnet