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Effect of shape and surface chemistry of TiO2 colloidal nanocrystals on the organic vapor absorption capacity of TiO2/PMMA composite |
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| Authors: | Annalisa Convertino Gabriella Leo Gaetano Di Marco |
| Affiliation: | a Dipartimento di Progettazione Molecolare, C.N.R., Istituto per lo Studio dei Materiali Nanostrutturati, via Salaria km. 29.300, 00016 Monterotondo St., Roma, Italy b Dipartimento di Materiali e Dispositivi, C.N.R., Istituto per i Processi Chimici e Fisici, Bari Division via Orabona 4, 70126 Bari, Italy c Dipartimento di Materiali e Dispositivi, C.N.R., Istituto per i Processi Chimici e Fisici, Messina Division, C.da Papardo, Salita Sperone, 98158 Messina, Italy |
| Abstract: | The organic vapor absorption capacity of poly(methyl metacrylate) (PMMA), filled with oleic acid (OLEA) capped TiO2 nanocrystals (NCs) with curved shape, rod-like and spherical, is studied. The NC shape combined with the nature of the capping molecules can be used to enhance or reduce the PMMA ability to absorb different solvent molecules in a controlled way. Indeed, the arrangement of the ligands at the NC surface demonstrates an effective tool to control the extent of the interaction between the penetrating molecules and the embedded NCs from the outer to the inner specific chemical functionality of the coordinating ligand molecules. |
| Keywords: | Poly(methyl metacrylate) (PMMA) nanocomposite Swelling Polymer-inorganic nanofiller interface |
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