iPP Based Nanocomposites Filled with Calcium Carbonate Nanoparticles: Structure/Properties Relationships |
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| Authors: | Maurizio Avella Simona Cosco Maria Laura Di Lorenzo Emilia Di Pace Maria Emanuela Errico Gennaro Gentile |
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| Institution: | 1. Istituto di Chimica e Tecnologia dei Polimeri (ICTP)-CNR, Via Campi Flegrei 34, 80078 Pozzuoli, Napoli, Italy;2. Università degli Studi di Napoli “Federico II”, Dipartimento di Ingegneria dei Materiali e della Produzione, P.le Tecchio 80, 80125 Napoli, Italy |
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| Abstract: | Isotactic polypropylene (iPP) based nanocomposites filled with calcium carbonate nanoparticles (CaCO3) were prepared by melt mixing and structure-properties relationships of the nanomaterials were studied. Elongated CaCO3 nanopowders coated with two different coating agents, polypropylene-maleic anhydride graft copolymer (iPP-g-MA) and fatty acids (FA), were tested as nanoreinforced phases. The influence of surface treatment of the nanoparticles on the polymer/nanofillers interfacial adhesion and on the final materials properties was investigated. Morphological analysis showed that the selected coating agents induce different iPP/nanofiller adhesion degrees. Young's modulus increases as a function of the nanoparticles content and the coating agent nature. Finally, all the prepared nanocomposites showed a significant improvement of iPP barrier properties either to oxygen or to carbon dioxide. |
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| Keywords: | barrier interfaces mechanical properties nanocomposites |
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