www.nanopicoftheday.org
July 7, 2004
Polyvinylidene Difluoride-Carbon Nanotube
Source: Nicole
Levi
References:
"Properties of Polyvinylidene Diflouride-Carbon Nanotube
Blends" Nicole Levi, Richard Czerw, Shuya Xing,
Preethi Iyer, David L. Carroll.
Nano Lett.; 2004; 4(7) pp 1267 - 1271
Description:
Single-walled and multiwalled carbon nanotube blends with polyvinylidene
difluoride (and its copolymers) have been characterized. The nanotubes are
observed to form a well-dispersed, structurally random nanophase within the
fluoropolymer matrix. X-ray analysis coupled with differential scanning
calorimetry suggests that the nanophase alters crystal formation within the
polymer. For most loadings and nanotube types, the piezoelectric -polymorph is
significantly enhanced over other crystal phases. Solution-cast composite thin
films exhibit enhancements in both the pyroelectric response and mechanical
transduction over pure polymer. This is interpreted as resulting from the change
in crystallinity.
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