TECHNICAL DATA

Pure Polyaniline Layers

Polyaniline (PAni) is insoluble in any solvent, neither fusible and hardly dispersible. Zipperling developed a process to create an absolute dispersion of PAni in organic solvents or water.

With these dispersions, virtually any material can be coated with a transparent conductive layer of pure polyaniline:

Dispersion 900132. Dispersion of polyaniline in a mixture of organic solvents, main component: Isopropyl alcohol. Particel size approx. 0,01u (10 nm). The polyaniline content is approx. 0,5 %. An addition of carrier resins is possible, but not recommended because the polyaniline content is too low. Best coating results can be realized by dip-coating the substrate into the dispersion. The coating is finished after drying the material with infra-red heating or heat treatment in a stove (60-230deg.C). Substrates with high thermocapacity (such as e.g. glass- or steelplates) should be preheated up to 180-250deg.C (e.g. on a hot plate), then dip the hot substrate very shortly into the dispersion and dry again (1-2 min) on the hot plate. This process can be repeated a few times to increase the thickness of the coating (approx. 0,05-0,1u for each dip-coat). The dispersion can be diluted up to 1:4 with IPA, if necessary.

Dispersion 900132/01 D ispersion of polyaniline in water. The polyaniline content is very low (approx. 0,05%). Up to now, we can not give any coating recommendation.

These dispersions can be used to perform fundamental tests (e.g. in research) on thin layers of pure PAni.

The processing is very complex and expensive, therefore it is not recommended for industrial use. For commercial application we recommend to use ORMECON-lacquers.

ORMECON is the registered trademark of Zipperling Kessler & Co, Ahrensburg.

This information is correct to the best of our knowledge and experience. It is provided entirely without obligation and does not constitute a legally binding warranty of specific attributes. Own measurements are recommended. Third-party proprietary rights are to be observed. Liability for advice and information shall be limited to cases of gross negligence.

Position: September 1995