Structure/Property Relationships for Poly(Vinylidene Fluoride)/Doped Polyaniline Blends
| Autor: | Valery P. Privalko, Sergiy V. Lobkov, Eleonora G. Privalko, Alexander Pud, Nicolas A. Rekhteta, S. M. Ponomarenko, Andriy S. Bandurenko, G. S. Shapoval |
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| Rok vydání: | 2005 |
| Předmět: |
Conductive polymer
Materials science Polymers and Plastics Dodecylbenzene Small-angle X-ray scattering Percolation threshold General Chemistry Condensed Matter Physics Crystallinity chemistry.chemical_compound Differential scanning calorimetry chemistry Chemical engineering Polyaniline Polymer chemistry Materials Chemistry Polymer blend |
| Zdroj: | Journal of Macromolecular Science, Part B. 44:749-759 |
| ISSN: | 1525-609X 0022-2348 |
| DOI: | 10.1080/00222340500251394 |
| Popis: | Poly(vinylidene fluoride) (PVDF) and its blends with polyaniline (PANI) doped with dodecylbenzene sulfonic acid (DBSA) were characterized by electrical conductivity, differential scanning calorimetry (DSC) and X‐ray scattering techniques. The onset of an infinite cluster (InC) of conducting, highly anisometric PANI/DBSA particles in PVDF/(PANI/DBSA) blends was observed at the percolation threshold as low as w*≈3.5 wt.%. The small angle X‐ray scattering (SAXS) data confirmed the expected spatial organization of PANI/DBSA needles into fractal‐like structures above w*. A slight decrease of both the DSC and the wide‐angle X‐ray scattering (WAXS) degrees of crystallinity of PVDF with the PANI/DBSA mass content w was explained by strong interactions at the PVDF/(PANI/DBSA) interface resulting in the loss of crystallizability of a fraction of sterically immobilized chains of PVDF in boundary layers around PANI/DBSA particles. The available data suggest that the conductive paths within InC of PANI/DBSA in PVDF/(P... |
| Databáze: | OpenAIRE |
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