Processing and functionalization effect in CNF/PMMA nanocomposites

作者：Varela Rizo H; Bittolo Bon S; Rodriguez Pastor I; Valentini L; Martin Gullon I^*

来源：Composites Part A: Applied Science and Manufacturing , 2012, 43(4): 711-721.

DOI：10.1016/j.compositesa.2011.12.017

• Polymer-matrix composites
• Mechanical properties
• Electron microscopy
• Carbon nanofibers

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.

• 出版日期2012-4