Heikki Ruohonen

Counter-ion induced processibility of polyaniline: conducting melt-processible polymer blends

Summary form only given. Conducting polymer blends made by blending thermoplastic bulk polymers with Polarene/sup TM/, a proprietary conducting polyaniline composition, using conventional melt-processing techniques are reported. The percolation threshold for conductivity is observed at astonishingly low weight fractions of the conjugated conducting polyaniline indicating the formation of a unique morphology. Results on electrical and mechanical properties of these blends will be presented and discussed.

Electrically conductive compositions based on processible polyanilines — PANEPOL TM

Abstract Truly melt- and solution processible electrically conductive polyaniline (PANI) compositions can be produced commercially utilizing the technology originally developed some years ago in a joint-effort between Neste Oy and UNIAX Corporation. This technology, PANIPOL TM , utilizes PANI protonated by functionalized protonic acids in combination with proprietary plasticizers. Neste has now further developed this technology and reached semi-industrial scale production capabilities. We briefly discuss some features of fusible, conductive PANIPOL TM compositions developed specifically for use in conductive products such as injection molded articles, extruded films and fibers.

Phase behavior of polyaniline/dodecyl benzene sulphonic acid mixture

Summary form only given. Recently it has been shown that processibility of polyaniline (PANI) can be increased by using, functionalized, counter ions. Specifically it has been observed that application of extra dodecyl benzene sufphonic acid (DBSA) yields plasticized and protonated melt processible complex. Here the reaction between PANI and DBSA has been investigated by calorimetry (DSC) and dielectric thermal analysis (DETA). A phase diagram has been compiled for the PANI(DBSA)-complex formation.

Electrically Conducting Polymer Blends Based On Polyaniline

Polyaniline offers a promissing possibility to make electrically conducting polymer blends with tailorable surface and bulk conductivities. The matrix polymer can be a thermoplast or a thermo- set. Different commonly used polymer processing methods are applicable to the blends; e.g. injection moulding, film blowing, compression moulding and fiber spinning. Also commonly used thermoset resins processings are possible. The key feature in making all this feasible is the co- solvent/plasticizer technology developed recently in the industry. Typically, the antistatic conduc- tivity level is reached in melt-processing with a polyaniline complex amount of 5 to 10 wt-% and in solution processing with 0.5 to 5 wt-% complex amounts. The maximum conductivity is in the range of 10 to 100 mS/cm for blends.

Electrically conducting blends of polyaniline

Summary form only given. A melt-processable, conducting polyaniline composition, Polarene/sup TM/ has recently been developed. This composition allows blending and processing using conventional techniques. In this study we present results on electrical conductivity, blend morphology and mechanical properties of conducting binary blends comprising Polarene/sup TM/ and polypropylene or polystyrene, respectively.