]>Facile Synthesis of Highly Aligned Multiwalled Carbon Nanotubes from Polymer Precursors : Figure 8
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562376.fig.008b
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Figure 8: (a) Carbon nanotubes of various shapes can be made. Polymer nanotubes after carbonization at 500 ∘ C replicate the morphology of commercial AAO nanopores. (b) The nanotubes are parallel to each other and perpendicular to the template. They remain aligned when template is removed slowly. (c) Defects such as bubble formation in MWNTs may be trapped due to nonideal heat treatment condition. PS-co-PMMA is used in this case. (d) PS-b-poly(butadiene) precursor upon carbonization leads to flat and collapsed nanotubes.