AI Article Synopsis
- A new ternary polymer blend system has been developed that significantly enhances proton conductivity when an electric field is applied during production.
- A polymer film treated with an electric field of 2 kV.cm(-1) showed a tenfold increase in conductivity compared to one made without the field, but higher fields (over 4 kV.cm(-1)) led to reduced conductivity.
- Microscopic analyses (SEM and AFM) revealed that the optimal electric field creates larger hydrophilic areas in the film that are crucial for proton conduction, indicating the importance of phase separation induced by the electric field.
Article Abstract
A novel proton conductor has been realized by employing a ternary polymer blend system in combination with an electric-field orientation technique. A polymer film recast from a solution containing poly(acrylic acid), poly(vinyl butyral), and fluoroalkyl graft polymer under 2 kV.cm(-1) exhibited 10 times higher proton conductivity than that prepared without the external electric field. However, when the film was prepared under a field higher than 4 kV.cm(-1), proton conductivity decreased. The membranous character has been investigated by SEM and AFM observations. As a result, it has been proven that an electric-field treatment of 2 kV.cm(-1) forms the largest hydrophilic domains for proton conduction in the film. The alteration of the phase separation morphology induced by the electric field well explains the proton conductivity change.
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| http://dx.doi.org/10.1021/la0528551 | DOI Listing |
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