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Title: Carbon-Nanohorn-Reinforced Polymer Matrix Composites: Synergetic Benefits in Mechanical Properties
Authors: Kadambi, Sourabh B.
Pramoda, K.
Ramamurty, U.
Rao, C. N. R.
Keywords: Nanoscience & Nanotechnology
Materials Science
carbon nanohorn
polymer nanocomposites
mechanical properties
Graphene Oxide
Nanomechanical Properties
Issue Date: 2015
Publisher: American Chemical Society
Citation: ACS Applied Materials & Interfaces
Kadambi, S. B.; Pramoda, K.; Ramamurty, U.; Rao, C. N. R., Carbon-Nanohorn-Reinforced Polymer Matrix Composites: Synergetic Benefits in Mechanical Properties. ACS Applied Materials & Interfaces 2015, 7 (31), 17016-17022.
Abstract: Mechanical properties of single-walled carbon nanohoms (SWNH) and SWNH plus few-layer graphene (EG)-reinforced poly(vinyl alcohol) (PVA) matrix composites have been measured using the nanoindentation technique. The elastic modulus (E) and hardness (H) of PVA were found to improve by similar to 315% and similar to 135%, respectively, upon the addition of just 0.4 wt % SWNH. These properties were found to be comparable to those obtained upon the addition of 0.2 wt % single-walled nanotubes (SWNT) to PVA. Furthermore, upon binary addition of 0.2 wt % EG and 0.4 wt % SWNH to PVA, benefits in the form of similar to 400% and similar to 330% synergy in E and H, respectively, were observed, along with an increased resistance to viscoelastic deformation. The reasons for these improvements are discussed in terms of the dimensionality of nanocarbon, the effectiveness of nanocarbon and polymer matrix interaction, and the influence of nanocarbon on the degree of crystallinity of the polymer. The results from SWNH reinforcement in this study demonstrate the scope for a novel and, in contrast to SWNT composites, a commercially feasible opportunity for strengthening polymer matrices.
Description: Restricted access
ISSN: 1944-8244
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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