| CONTACT ANGLE/SURFACE ENERGY SERVICES |
The FTA1000 is a fully automated, high-throughput contact angle goniometer/surface tensiometer, capable of measuring over 100 contact angles per hour.
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What is a "Contact Angle?" |
- Angle between tangent to liquid surface and supporting surface (through liquid)
- Measures the balance of interfacial energies of the phases in contact:
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C. J. van Oss has said that “sessile drop contact angle measurement remains the most accurate method for determining the interaction energy between a liquid and a solid.” Contact angle measurements are used to characterize surface cleanliness, the effectiveness of surface treatments, wettability and spreading behavior, fundamentals of adhesive-adherend interactions, and liquid imbibition kinetics, for example. However, contact angle and surface energy analysis capability is not easy to find among commercial laboratories. TechDirect possesses expertise in this scientific area , and provides these services using state-of-the-art instrumentation.
FTA1000 Automated Contact Angle Goniometer
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| The FTA1000 is a fully automated, high-throughput contact angle goniometer/surface tensiometer, capable of measuring over 100 contact angles per hour. The FTA1000 automatically deposits droplets of controlled volume, of up to four different test liquids simultaneously, onto a variety of test substrates, in any desired pattern. The FTA1000 automatically locates the baseline and performs drop shape analysis, yielding the contact angle and/or work of adhesion of the liquid and substrate. By multiple-liquid techniques, the surface energy of a solid polymer can be decomposed into its components: the dispersion, generalized-acid and generalized-base interaction energies. A single contact angle measurement using a coating liquid of known surface tension can be used to calculate the thermodynamic work of adhesion of that liquid for the substrate. |
