Acta Geodynamica et Geomaterialia

Title: TEXTURE AND ELECTRICAL CONDUCTIVITY OF PELLETS PRESSED FROM PANI AND PANI/MONTMORILLONITE INTERCALATE
Authors: Tokarský Jonáš, Mamulová-Kutláková Kateřina, Neuwirthová Lucie, Kulhánková Lenka, Stýskala Vítězslav, Matějka Vlastimil and Čapková Pavla
DOI: 10.13168/AGG.2013.0036
Journal: Acta Geodynamica et Geomaterialia, Vol. 10, No. 3 (171), Prague 2013
Full Text: PDF file (0.4 MB)
Keywords: clay; composite; conducting polymer; structure-property relations; synthesis and processing
Abstract: Polyaniline/montmorillonite (PANI/MMT) intercalate pressed into pellets using the pressure 28 MPa has been prepared in order to achieve two-dimensional conductivity which is close to pure PANI, however with improved mechanical and thermal stability (due to the presence of silicate). Structure-conductivity relationship has been investigated using X-ray diffraction analysis and diffraction patterns obtained from two perpendicular planes revealed the strong texture. The structural anisotropy led to the anisotropy in conductivity, which is much stronger for PANI/MMT than for pure PANI pellets. Anyway, the inplane conductivity is of the same order for both PANI/MMT and pure PANI pellets. The anisotropy factor, that means the ratio of in-plane conductivity and conductivity in the direction perpendicular to the pellet plane, was 328 (PANI/MMT pellet) and 6.7 (pure PANI pellet), respectively.