Type

Journal Article

Authors

Werner Blau
Jonathan Nesbit Coleman

Subjects

Engineering

Topics
carbon carbon composites mechanical properties polymer composites amorphous physics young s modulus polyvinyl alcohol multiwalled carbon nanotubes

Morphological and mechanical properties of carbon-nanotube-reinforced semicrystalline and amorphous polymer composites (2002)

Abstract In this work, multiwalled carbon nanotubes were investigated as potential mechanical reinforcement agents in two hosts, polyvinyl alcohol (PVA) and poly(9-vinyl carbazole) (PVK). It was found that, by adding various concentrations of nanotubes, both Young?s modulus and hardness increased by factors of 1.8 and 1.6 at 1 wt?% in PVA and 2.8 and 2.0 at 8 wt?% in PVK, in reasonable agreement with the Halpin?Tsai theory. Furthermore, the presence of the nanotubes was found to nucleate crystallization of the PVA. This crystal growth is thought to enhance matrix-nanotube stress transfer. In addition, microscopy studies suggest extremely strong interfacial bonding in the PVA-based composite. This is manifested by the fracture of the polymer rather that the polymer-nanotube interface.
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Full list of authors on original publication

Werner Blau, Jonathan Nesbit Coleman

Experts in our system

1
Werner Blau
Trinity College Dublin
Total Publications: 109
 
2
Jonathan Coleman
Trinity College Dublin
Total Publications: 217