Improvement of the surface properties of polycarbonate by organic–inorganic hybrid coatings |
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| Authors: | Paola Fabbri Cristina Leonelli Massimo Messori Francesco Pilati Maurizio Toselli Paolo Veronesi Sandrine Morlat‐Thérias Agnès Rivaton Jean Luc Gardette |
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| Affiliation: | 1. Dipartimento di Ingegneria dei Materiali e dell'Ambiente, Università di Modena e Reggio Emilia, Via Vignolese 905/a, 41100 Modena, Italy;2. Dipartimento di Chimica Applicata e Scienza dei Materiali, Università di Bologna,Via Risorgimento 2, 40100 Bologna, Italy;3. Laboratoire de Photochimie Moléculaire et Macromoléculaire, Unitè Mixte De Recherches Centre National de la Recherche Scientifique 6505, Université Blaise Pascal (Clermont‐Ferrand), 63177 Aubière Cedex, France |
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| Abstract: | Organic–inorganic hybrids (ceramers) were prepared through the sol–gel process with opportune alkoxysilane‐terminated polymer chains as the organic phase and tetraethoxysilane as the inorganic network precursor. The consolidation process, used to reach a high degree of crosslinking between the two phases, was carried out with either conventional oven heating or microwave irradiation. High conversion degrees were obtained with both treatments even when microwave postcuring turned out to be much faster than conventional heating(5–10 s vs 40 min). Scratch‐test and photooxidation investigations showed a significant improvement in scratch, yellowing, and photodegradation resistance for coated polycarbonate. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008 |
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| Keywords: | coatings curing of polymers nanocomposites photochemistry transparency |
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