Freeze cast carbon nanotube-alumina nanoparticle green composites
2008
Lu, Kathy
CNT-Al₂O₃ nanoparticle suspensions without and with sodium dodecyl sulfate (SDS) were freeze-cast into green samples. SDS drastically improves Carbon nanotube (CNT) dispersion and CNT-Al₂O₃ nanocomposite homogeneity. Green density of the CNT-Al₂O₃ nanocomposites decreases with CNT addition. Green strength of the CNT-Al₂O₃ nanocomposites increases with the CNT content when CNTs are well separated. The CNT-Al₂O₃ nanocomposites show medium energy fracture mode during equibiaxial flexural strength testing and change color in response to CNT content and distribution in the Al₂O₃ nanoparticle matrix.
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