Phase‐separated, conducting composites from polyaniline and benzobisthiazole rigid‐rod polymer | Zendy

Tan LoonSeng | Zendy; Simko Sharon R. | Zendy; Bai Shih Jung | Zendy; Vaia Richard A. | Zendy; Taylor Barney E. | Zendy; Houtz Marlene D. | Zendy; Alexander Max D. | Zendy; Spry Robert J. | Zendy

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Phase‐separated, conducting composites from polyaniline and benzobisthiazole rigid‐rod polymer

Author(s) -

Tan LoonSeng,

Simko Sharon R.,

Bai Shih Jung,

Vaia Richard A.,

Taylor Barney E.,

Houtz Marlene D.,

Alexander Max D.,

Spry Robert J.

Publication year - 2001

Publication title -

journal of polymer science part b: polymer physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.65

H-Index - 145

eISSN - 1099-0488

pISSN - 0887-6266

DOI - 10.1002/polb.1224

Subject(s) - polyaniline , thermogravimetric analysis , materials science , thermal stability , protonation , composite material , poly(p phenylene) , polymer chemistry , conductive polymer , polymer , conductivity , chemistry , polymerization , organic chemistry , ion

As an alternative method for processing polyaniline (PANI) from its conducting (protonated) state, vacuum casting of PANI from a methanesulfonic acid (MSA) solution provided films with electrical conductivity values of about 130–150 S/cm. In addition, we similarly prepared blended films of PANI · MSA and poly( p ‐phenylene benzobisthiazole) (PBZT). This process eliminated the need for a subsequent protonation step and had the additional advantage that the conjugated PBZT may provide alternative conducting pathways. Conductivity values of the composite films ranged from 100 pS/cm to 124 S/cm, and the films displayed critical concentration behavior with a PANI threshold concentration of 2.75% and a critical exponent of 4. Transmission electron micrographs displayed phase‐separated regions with PANI forming a continuous network at high concentrations. Thermogravimetric analysis results demonstrated the thermal and thermooxidative stability advantage of the blends due to the PBZT component. © 2001 John Wiley & Sons, Inc. J Polym Sci Part B: Polym Phys 39: 2539–2548, 2001

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