Preparation and evaluation of composites from montmorillonite and some heterocyclic polymers: 3. A water dispersible nanocomposite from pyrrole-montmorillonite polymerization system
Montmorillonite (MMT)-based nanocomposites of polypyrrole (PPY) were prepared through the polymerization of pyrrole with MMT and FeCl{sub 3}-impregnated MM in bulk and in aqueous medium. The composites were characterized by IR, X-ray diffraction (XRD), and scanning electron microscopy (SEM) studies. XRD analyses revealed no change in d{sub 001} spacing in MMT (9.8 {angstrom}), suggesting no intercalation of PPY into MMT lamellae. TEM analysis indicated the particle size to be 25 {+-} 7 nm. The bulk conductivity of the composites was in the range of (1.3 to 26) x 10{sup {minus}5} S/cm, depending on the FeCl{sub 3}-impregnation level and on the PPY loading in the composites. Suitable procedures were developed for obtaining a stable aqueous dispersion and a reversible dispersion of these composites.
- Research Organization:
- Presidency Coll., Calcutta (IN)
- OSTI ID:
- 20005993
- Journal Information:
- Materials Research Bulletin, Vol. 34, Issue 8; Other Information: PBD: Jun 1999; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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