Catalytic poly(vinyl alcohol) functionalized membranes obtained by gamma irradiation

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Abstract

Polymeric catalytic membranes bearing sulfonic acid functions have been prepared by mutual gamma irradiation at a Co-60 source, of poly(vinyl alcohol) (PVA) membranes and methanesulfonic acid. The effect of various synthesis conditions on membranes' physical-chemical properties and catalytic activity in the esterification reaction between acetic acid and isoamyl alcohol to obtain isoamyl acetate (banana flavor), was evaluated. The membranes were characterized by ATR-FTIR, TPP, AFM and SEM. Water contact angle determinations were also performed. The obtained results showed that within the range of conditions studied the increase in sulfonic acid groups' content is accompanied by an enhancement in the membranes catalytic activity, while the increase in absorbed dose leads to a decrease in catalytic activity.
Original languageEnglish
Title of host publicationProceedings of the 12th Tihany Symposium on Radiation Chemistry
EditorsÁgnes Sáfrány, András Kovács
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Pages1314-1318
DOIs
Publication statusPublished - Sep 2012

Publication series

NameRadiation Physics And Chemistry
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Number9
Volume81
ISSN (Print)0146-5724

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Keywords

  • Gamma irradiation
  • Isoamyl acetate
  • Poly(vinyl alcohol)
  • Polymeric catalytic membranes
  • Sulfonic groups

Cite this

Casimiro, M. H., Silva, A. G., Vaz Pinto, J., Ramos, A. M. M., Vital, J. S. M., & Ferreira, L. M. (2012). Catalytic poly(vinyl alcohol) functionalized membranes obtained by gamma irradiation. In Á. Sáfrány, & A. Kovács (Eds.), Proceedings of the 12th Tihany Symposium on Radiation Chemistry (pp. 1314-1318). (Radiation Physics And Chemistry; Vol. 81, No. 9). PERGAMON-ELSEVIER SCIENCE LTD. https://doi.org/10.1016/j.radphyschem.2012.01.036