Nanostructured polyolefins/clay composites: role of the molecular interaction at the interface
| Autor: | Francesco Ciardelli, Serena Coiai, Stefania Savi, Sylvain Augier, Elisa Passaglia, Monica Bertoldo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Materials science Nanocomposite Polymers and Plastics POLYMER MELT INTERCALATION Maleic anhydride Polymer MECHANICAL-PROPERTIES LAYERED SILICATE NANOCOMPOSITES MODEL chemistry.chemical_compound Economica chemistry Phase (matter) Polymer chemistry Copolymer Surface modification FUNCTIONALIZATION Composite material Dispersion (chemistry) Glass transition |
| Zdroj: | Polymers for advanced technologies 19 (2008): 560–568. doi:10.1002/pat.1107 info:cnr-pdr/source/autori:Passaglia, E; Bertoldo, M; Coiai, S; Augier, S; Savi, S; Ciardelli, F/titolo:Nanostructured polyolefins%2Fclay composites: role of the molecular interaction at the interface/doi:10.1002%2Fpat.1107/rivista:Polymers for advanced technologies (Print)/anno:2008/pagina_da:560/pagina_a:568/intervallo_pagine:560–568/volume:19 |
| DOI: | 10.1002/pat.1107 |
| Popis: | "The extent of interphase interactions between polymer phase and inorganic particles is the driving force addressing the preparation/properties design in the field of the corresponding micro- and nanocomposites. In the case of preparation of nartocomposites based on polyolefins (POs) and inorganic compounds as potentially nanodispersed phase, the use of a PO with proper functional groups is necessary for the interface adhesion and stabilization of the nanostructured morphology. According to this approach, ethylene/propylene copolymers with a different propylene content were used for the preparation of nanocomposites through melt mixing with organophilic montmorillonites (OMMT). By taking into account the important role of functionalities grafted onto POs, two different synthetic approaches were compared here: (1) the dispersion of the inorganic filler was obtained by using previously functionalized POs bearing carboxylate groups as matrices; (2) the nanocomposites were prepared by performing contemporaneously the functionalization of POs (by using maleic anhydride (MAH) and/or diethyl maleate (DEM)) and the dispersion of the filler in a one-step process. The morphology of the nanocomposites as well as the variation of solubility and glass transition temperature (T-g) of the PO matrix were evaluated and tentatively discussed with reference to functionalization degrees, structure of PO, and preparation procedure. Copyright (C) 2008 John Wiley & Sons, Ltd." |
| Databáze: | OpenAIRE |
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