Hiroyuki
Muto and colleagues at Japan's Toyohashi University of Technology
(Toyohashi Tech) have developed an innovative method for producing CNT
(carbon nano-tube) resin composite material that only requires 1/100 of
the conventional amount of CNT additive to produce electrical
conductivity in the composite material.
In this
method, CNTs were mixed in an electrolyte solution and added to the
composite, where the CNTs were absorbed onto the surfaces of the resin
particles due to electrostatic absorption. This innovative procedure
enabled the production of electrical conducting composites by the
addition of a small quantity of CNTs.
Importantly,
the electrical conductivity of the composite material was easily
controlled by changing the amount of electrolyte added to the composite;
namely, the concentration of CNTs absorption onto the resin particles.
Notably,
this approach enables significant reductions in both the production
costs and the production time compared with conventional methods for
manufacturing conductive resins.
The researchers
are confident that adding particles with charged surfaces will enable
the production of a wide range of composite materials such as metals,
ceramics, and polymers. This method is expected to find applications in
the production of enzymes and cosmetics.
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