Processing and functionalization effect in CNF/PMMA nanocomposites |
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| Authors: | H Varela-RizoS Bittolo-Bon I Rodriguez-PastorL Valentini I Martin-Gullon |
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| Affiliation: | a Chemical Engineering Department, University of Alicante, Carretera de San Vicente s/n, 03690 Alicante, Spain
b Department of Civil and Environmental Engineering, University of Perugia, Strada di Pentima 4, 05100 Terni, Italy |
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| Abstract: | We compare results for polymer nanocomposites of poly(methyl methacrylate) (PMMA) and carbon nanofibers (CNFs) prepared by three different processing techniques: melt-compounding, solvent casting and in situ polymerization. Moreover, CNFs were used as received and functionalized with oxygen and nitrogen groups. Mechanical properties and rheological behavior of the composites revealed a strong filler-polymer interface interaction in the in situ polymerized composites, even through covalent binding, while was noticed to be weaker in melt-compounding and solvent casting. In addition, in these two further cases, the addition of CNFs, pristine or functionalized, improved toughness of the PMMA. |
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| Keywords: | A Polymer-matrix composites B Mechanical properties D Electron microscopy Carbon nanofibers |
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