Evaluation of Hydrophilicity/Hydrophobicity of Polymer Surfaces

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Measurement of friction by the chemical force microscope (CFM)

The scanning probe microscope (SPM) can be used for the technique for evaluation the surface functions of polymer materials. It is possible to analyze those thin films and films which have been endowed with the functions of hydrophilicity or hydrophobicity by chemically modifying the probe of SPM and measuring the friction between the probe and polymer surface.

Conceptual diagram of chemical modification of the probe

・With the hydrophilic probe, as reciprocal action becomes stronger, friction becomes higher due to repulsive reciprocal action among the hydrophilic groups.

・With the hydrophobic probe, as reciprocal action becomes stronger, friction becomes lower due to repulsive reciprocal action among the hydrophobic groups.

・The probe can be chemically modified for COOH and NH2, among other things. (In such case, please consult with us.)

Example of evaluation of hydrophilicity of polymer surface (hydrophilic probe)

From the analysis of CFM by the hydrophilic probe, it can be presumed that sulfonated fluorocarbon resin is higher in friction and hydrophilicity than polyimide.

This is an effective an tions among polymer materials.
It also possible to look into in-plane distribution of friction.

CFM : Chemical Force Microscope

Search Number 4060

Download The Technical Note of This Exapmle.

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