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. |