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The purpose of this work was to assess if a single material could
be made to humidify air and pump it at the same time. Useful
commercial air volumes and measurable humidity outcomes were used
for determining commercial viability, ideally in the medical device
space, and considering what would be the likely costs of the
materials to achieve current industrial or medical needs.
Mechanisms were identified in the literature and the best was
selected and utilised. Many additional parameters, which were not
necessary for function, but were essential for medical device
commercialisation, also had to be accommodated. Persistent
hydration was essential to keep functional actuation, but the
hydration methods had to use fluids that could be in contact with
humans. The temperature, pH and toxicity of many Ionic Polymer
Metal Composite environments removed many promising materials from
the list of possible choices. The method of selecting IPMC
material, the technical hurdles overcome to study the material once
it was manufacturable and the quantifications undertaken are a good
example of how to check and assess feasibility in a highly
constrained design space. The adventure continues.
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