Type

Journal Article

Authors

Mauro Ferreira
Jonathan Nesbit Coleman

Subjects

Engineering

Topics
physical mechanical properties composite materials polymer materials physics polymer composites reinforcement materials young s modulus

Physical Mechanism for the mechanical reinforcement in nanotube-polymer composite materials (2005)

Abstract The significant increase in the Young?s modulus of nanotube-polymer composites is often correlated with the formation of a crystalline layer of polymers surrounding the nanotubes. Although the improved stress transfer between the stiffer nanotube and the softer polymer matrix has been attributed to the presence of this well-ordered polymeric layer, the actual mechanism for this stress transfer is still unclear. To clarify this matter, we model the polymer-nanotube composite by harmonic chains interacting with a rigid periodic potential, an extension of the so-called Frenkel-Kontorova model. We identify the origin of the reinforcement with the occurrence of a templating transition, in which polymers are constrained by the periodic potential of the underlying nanotube. The model is potentially capable of predicting the ideal combination of polymers and nanotube diameters to maximally enhance the mechanical properties of composite structures.
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Full list of authors on original publication

Mauro Ferreira, Jonathan Nesbit Coleman

Experts in our system

1
Mauro Ferreira
Trinity College Dublin
Total Publications: 64
 
2
Jonathan Coleman
Trinity College Dublin
Total Publications: 217