Texture and electrical conductivity of pellets pressed from PANI and PANI/montmorillonite intercalate

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.

[1]  L. Ivanek,et al.  Montmorillonite intercalated by conducting polyanilines , 2012 .

[2]  V. Vigneras,et al.  Polyaniline/clay as nanostructured conductive filler for electrically conductive epoxy composites. Influence of filler morphology, chemical nature of reagents, and curing conditions on composite conductivity , 2012 .

[3]  J. Travas-sejdic,et al.  Synchrotron X-ray scattering reveals early-stage crystallinity during the self-assembly of polyaniline nanotubes with rectangular cross-sections , 2012 .

[4]  J. Stejskal,et al.  The influence of compression pressure on transport properties of polyaniline , 2011 .

[5]  F. Marken,et al.  Tuning percolation speed in layer-by-layer assembled polyaniline–nanocellulose composite films , 2011 .

[6]  J. Pfleger,et al.  Polyaniline–sodium montmorillonite clay nanocomposites: effect of clay concentration on thermal, structural, and electrical properties , 2011, Journal of Materials Science.

[7]  J. Stejskal,et al.  Conducting polyaniline–montmorillonite composites , 2010 .

[8]  E. Srasra,et al.  Solid-state synthesis and electrical properties of polyaniline/Cu-montmorillonite nanocomposite , 2010 .

[9]  V. Kulichikhin,et al.  Anisotropic electroconducting polymer-silicate composites based on polyaniline , 2010 .

[10]  S. Qi,et al.  High conductivity and low percolation threshold in polyaniline/graphite nanosheets composites , 2010 .

[11]  M. Karakışla,et al.  Conducting polyaniline/kaolinite composite: Synthesis, characterization and temperature sensing properties , 2009 .

[12]  M. Pospíšil,et al.  Fluorescence of reduced charge montmorillonite complexes with methylene blue: Experiments and molecular modeling. , 2009, Journal of colloid and interface science.

[13]  L. Merhari.  Hybrid nanocomposites for nanotechnology : electronic, optical, magnetic and biomedical applications , 2009 .

[14]  P. Čapková,et al.  Fluorescence and structure of methyl red-clay nanocomposites. , 2008, Journal of nanoscience and nanotechnology.

[15]  M. Pospíšil,et al.  Composition, structure, and luminescence of montmorillonites saturated with different aggregates of methylene blue. , 2007, Journal of colloid and interface science.

[16]  R. Landers,et al.  Spectroscopic characterization of polyaniline formed in the presence of montmorillonite clay , 2006 .

[17]  I. Dékány,et al.  Chapter 7.3 Clay Mineral Organic Interactions , 2006 .

[18]  P. Gómez‐Romero,et al.  Nanocomposite Hybrid Molecular Materials for Application in Solid‐State Electrochemical Supercapacitors , 2005 .

[19]  F. Ohashi,et al.  Synthesis of polyaniline–montmorillonite nanocomposites by the mechanochemical intercalation method , 2004 .

[20]  F. Baletto,et al.  Encylopedia of Nanoscience and Nanotechnology , 2004 .

[21]  R. Gerhardt,et al.  Structure–electrical property study of anisotropic polyaniline films , 2003 .

[22]  J. Stejskal,et al.  Polyaniline. Preparation of a conducting polymer(IUPAC Technical Report) , 2002, Chemistry International.

[23]  A. Heeger,et al.  Anisotropic conductivity in polyaniline and image processing applications , 2000 .

[24]  P. Dubois,et al.  Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials , 2000 .

[25]  Qiuju Wu,et al.  Synthesis and characterization of PAn/clay nanocomposite with extended chain conformation of polyaniline , 2000 .

[26]  J. Stejskal,et al.  Electrically anisotropic polyaniline-polyurethane composites , 1999 .

[27]  P. Sáha,et al.  Electrical properties of polyaniline suspensions , 1998 .

[28]  J. Stejskal,et al.  Electrically anisotropic materials: polyaniline particles organized in a polyurethane network , 1997 .

[29]  D. Shriver,et al.  Conductivity Anisotropy of Polyphosphazene−Montmorillonite Composite Electrolytes , 1996 .

[30]  P. Laughlin,et al.  Synthesis of high molecular weight polyaniline at low temperatures , 1996 .

[31]  K. Kuroda,et al.  PHOTOFUNCTIONS OF INTERCALATION COMPOUNDS , 1995 .

[32]  Alan J. Heeger,et al.  Counter-ion induced processibility of conducting polyaniline , 1993 .

[33]  R. P. Mccall,et al.  THERMAL PROCESS FOR ORIENTATION OF POLYANILINE FILMS , 1991 .