Journal article
Maximizing Young's modulus of aminated nanodiamond-epoxy composites measured in compression
Polymer (Guilford), v 53(25), pp 5965-5971
30 Nov 2012
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Nanodiamond, due to its superior hardness and Young's modulus in combination with its large surface area holds great potential for the mechanical reinforcement of polymer matrices. However, it is still not possible to take full advantage of these properties in polymer matrix composites. The main reasons are poor dispersion, agglomeration and a weak interface between nanodiamond and the polymer. Aminated nanodiamond can be used to form a strong covalent interface with an epoxy polymer. We show how Young's modulus can be further improved if an interference of nanodiamonds amino groups with the epoxy stoichiometry is taken into account. Dispersion of nanodiamond is improved by slightly adjusting the manufacturing process, thus increasing Young's modulus of the composites. Predictions by a micromechanics homogenization method that consider nanodiamond agglomeration and dispersion suggest that Young's modulus can be further increased by slightly improving both parameters. For the first time we show that epoxy can be cured solely by nanodiamonds amino groups without any additions of curing agent, resulting in a composite's Young's modulus measured by nanoindentation of up to ∼18 GPa – a 700% improvement over neat epoxy.
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Details
- Title
- Maximizing Young's modulus of aminated nanodiamond-epoxy composites measured in compression
- Creators
- I Neitzel - Department of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USAV.N Mochalin - Department of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USAJ Niu - Department of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USAJ Cuadra - Department of Mechanical Engineering & Mechanics, Drexel University, Philadelphia, PA 19104, USAA Kontsos - Department of Mechanical Engineering & Mechanics, Drexel University, Philadelphia, PA 19104, USAG.R Palmese - Department of Chemical & Biological Engineering, Drexel University, Philadelphia, PA 19104, USAY Gogotsi - Department of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USA
- Publication Details
- Polymer (Guilford), v 53(25), pp 5965-5971
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; Chemical and Biological Engineering; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000311818900038
- Scopus ID
- 2-s2.0-84869206139
- Other Identifier
- 991014969863504721
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- Web of Science research areas
- Polymer Science