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Influence of Structural Defects on the Electrical Properties of Carbon Nanotubes and Their Polymer Composites
Author(s) -
DomínguezRodríguez G.,
Tapia A.,
Seidel G. D.,
Avilés F.
Publication year - 2016
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600116
Subject(s) - materials science , carbon nanotube , composite material , transverse plane , volume fraction , polymer , composite number , radius , electrical resistivity and conductivity , cylinder , conductivity , structural engineering , geometry , chemistry , computer security , electrical engineering , computer science , engineering , mathematics
The influence of carbon nanotube (CNT) structural damage (CNTSD) on the axial and transverse electrical conductivities of CNT/polymer composites is explored through a hierarchical multiscale modeling strategy. The composite cylinder and Mori–Tanaka's methods are used to model effective representative volume elements of CNT/polymer composites containing different fractions of defects. The axial and transverse CNT conductivities are adversely influenced by CNTSD, with the decrease being more pronounced for small radius CNTs. The predictions indicate that an 8% fraction of CNTSD decreases the axial and transverse conductivities of composites containing randomly oriented CNTs by 25–30%. Similar reductions in conductivity are found for both random and clustered damage.