Functionalized graphene sheets for polymer nanocomposites
| Autor: | Sasha Stankovich, Hannes C. Schniepp, Dmitriy A. Dikin, Margarita Herrera-Alonso, SonBinh T. Nguyen, T. Ramanathan, Ahmed Abdala, Richard D. Piner, Rodney S. Ruoff, L. C. Brinson, Ilhan A. Aksay, Robert K. Prud'homme, Xinqi Chen, Douglas H. Adamson |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Nanostructure Polymer nanocomposite Macromolecular Substances Polymers Surface Properties Molecular Conformation Biomedical Engineering Nanoparticle Bioengineering Nanotechnology chemistry.chemical_compound Materials Testing Ultimate tensile strength Polymethyl Methacrylate General Materials Science Thermal stability Particle Size Electrical and Electronic Engineering Methyl methacrylate chemistry.chemical_classification Membranes Artificial Polymer Condensed Matter Physics Carbon Atomic and Molecular Physics and Optics Nanostructures chemistry Crystallization Glass transition |
| Zdroj: | Nature Nanotechnology. 3:327-331 |
| ISSN: | 1748-3395 1748-3387 |
| DOI: | 10.1038/nnano.2008.96 |
| Popis: | Polymer-based composites were heralded in the 1960s as a new paradigm for materials. By dispersing strong, highly stiff fibres in a polymer matrix, high-performance lightweight composites could be developed and tailored to individual applications. Today we stand at a similar threshold in the realm of polymer nanocomposites with the promise of strong, durable, multifunctional materials with low nanofiller content. However, the cost of nanoparticles, their availability and the challenges that remain to achieve good dispersion pose significant obstacles to these goals. Here, we report the creation of polymer nanocomposites with functionalized graphene sheets, which overcome these obstacles and provide superb polymer-particle interactions. An unprecedented shift in glass transition temperature of over 40 degrees C is obtained for poly(acrylonitrile) at 1 wt% functionalized graphene sheet, and with only 0.05 wt% functionalized graphene sheet in poly(methyl methacrylate) there is an improvement of nearly 30 degrees C. Modulus, ultimate strength and thermal stability follow a similar trend, with values for functionalized graphene sheet- poly(methyl methacrylate) rivaling those for single-walled carbon nanotube-poly(methyl methacrylate) composites. |
| Databáze: | OpenAIRE |
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