Reworkable layered silicate-epoxy nanocomposites: synthesis, thermomechanical properties and combustion behaviour
-
Marco Berta
,
Sébastien Maria
Abstract
Epoxy resin/montmorillonite nanocomposites were obtained via in situ intercalative polymerisation. The polymer matrix consists of anhydride-cured epoxy, and the choice of catalyst allows exchange reactions without depolymerisation. This makes the resin insoluble and reprocessable at the same time and potentially recyclable. In this study, reprocessing of the nanocomposites was done by mechanical grinding and re-welding by compression moulding at high temperature, similarly to thermoplastics. The effect of this process on the level of clay dispersion is discussed. Nanocomposite superstructures were imaged by means of transmission electron microscopy, and montmorillonite interlayer spacings were estimated by small angle X-ray scattering. The thermomechanical and combustion properties of the nanocomposites were investigated by means of dynamic mechanical thermal analysis, thermogravimetric analysis and cone calorimetry. The material tensile complex modulus E* was improved by nanocomposite formation, also after the glass transition occurred. Flammability of the material was moderately affected by the dispersed clay.
Acknowledgments:
The authors would like to thank Alain Tonetto of the Centre Commun de Microscopie de St. Charles, Aix-Marseille Université for the help with SAXS measurements and Jean-Paul Chauvin (IBDML Aix-Marseille Université) for the electron microscopy. We would also like to thank Fabio Cuttica for the help with cone calorimeter data collection, Dr. Florence Russo for her help with the materials synthesis and the MADIREL Laboratory of Aix-Marseille Université for letting us use their DMTA. The authors are indebted to Dr. Renaud Bouchet and Dr. Didier Devaux for their help in the interpretation of DMTA results and to Dr. Benoit Loppinet for the useful hints about the SAXS sample preparation.
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Review
- Characterization of polymeric shape memory materials
- Original articles
- Reworkable layered silicate-epoxy nanocomposites: synthesis, thermomechanical properties and combustion behaviour
- Crystalline phase of inorganic montmorillonite/poly(vinylidene fluoride) nanocomposites: influence of dispersion of nanolayers
- Effects of epoxidized natural rubber as a compatibilizer on latex compounded natural rubber-clay nanocomposites
- Preparation and mechanical properties of poly(p-phenylene sulfide) nanofiber sheets obtained by CO2 laser supersonic multi-drawing
- Fabrication of mixed matrix poly(phenylene ether-ether sulfone)-based nanofiltration membrane modified by Fe3O4 nanoparticles for water desalination
- Tailoring PES membrane morphology and properties via selected preparation parameters
- Preparation and characterization of pure and copper-doped PVC films
- Study on preparation and properties of carbon nanotubes/hollow glass microspheres/epoxy syntactic foam
- Processing of polycaprolactone and hydroxyapatite to fabricate graded electrospun composites for tendon-bone interface regeneration
Artikel in diesem Heft
- Frontmatter
- Review
- Characterization of polymeric shape memory materials
- Original articles
- Reworkable layered silicate-epoxy nanocomposites: synthesis, thermomechanical properties and combustion behaviour
- Crystalline phase of inorganic montmorillonite/poly(vinylidene fluoride) nanocomposites: influence of dispersion of nanolayers
- Effects of epoxidized natural rubber as a compatibilizer on latex compounded natural rubber-clay nanocomposites
- Preparation and mechanical properties of poly(p-phenylene sulfide) nanofiber sheets obtained by CO2 laser supersonic multi-drawing
- Fabrication of mixed matrix poly(phenylene ether-ether sulfone)-based nanofiltration membrane modified by Fe3O4 nanoparticles for water desalination
- Tailoring PES membrane morphology and properties via selected preparation parameters
- Preparation and characterization of pure and copper-doped PVC films
- Study on preparation and properties of carbon nanotubes/hollow glass microspheres/epoxy syntactic foam
- Processing of polycaprolactone and hydroxyapatite to fabricate graded electrospun composites for tendon-bone interface regeneration
