A novel hybrid PU-alumina flexible foam with superior hydrophilicity and adsorption of carcinogenic compounds from tobacco smoke

Letizia Verdolotti, Aurelio Salerno, Raffaele Lamanna, Alfredo Nunziata, Paolo Netti, Salvatore Iannace

Research output: Contribution to journalArticle

17 Citations (Scopus)


A novel porous polyurethane (PU) hybrid foam was designed to improve the hydrophilicity of a conventional open pore PU foam, and to enhance the adsorption of carcinogenic compounds from tobacco smoke. The hybrid foam was prepared by interdispersing ultramilled alumina particles within PU precursors to realize a PU/Al2O3hybrid porous material with well controlled microstructural properties and improved hydrophilicity. The capability of the as obtained hybrid foam to adsorb toxic compounds from the mainstream of tobacco smoke was investigated by using a cellulose-active carbon-cellulose triple filter model, and the results were compared to those obtained for neat PU foam and the standard cigarette filter tip. The results of this study showed that the ultramilled alumina particles enhanced both thermal stability and hydrophilicity of the neat PU foam. Furthermore, the as-obtained hybrid PU/Al2O3foam was able to improve the adsorption of nitrosamines, acetamide, idroquinone, cresol and small aminic and aldehydic molecules, if compared to neat PU foam and standard cigarette filter tip, evidencing potential as tobacco smoke filter. © 2011 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)79 - 87
Number of pages9
JournalMicroporous and Mesoporous Materials
Publication statusPublished - 15 Mar 2012
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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