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Titolo:
Capillary zone electrophoresis and micellar electrokinetic chromatography of solution of polyaniline particles
Autore:
Krivankova, L; Pantuckova, P; Bocek, P;
Indirizzi:
Acad Sci Czech Republ, Inst Analyt Chem, CS-61142 Brno, Czech Republic Acad Sci Czech Republ Brno Czech Republic CS-61142 Brno, Czech Republic
Titolo Testata:
ELECTROPHORESIS
fascicolo: 3, volume: 21, anno: 2000,
pagine: 627 - 632
SICI:
0173-0835(200002)21:3<627:CZEAME>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIGHT-SCATTERING; SYSTEM PEAKS; DISPERSIONS;
Keywords:
polyaniline particles; capillary zone electrophoresis; micellar electrokinetic chromatography;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Krivankova, L AVCR, UIACH, Veveri 97, Brno 61142, Czech Republic AVCR Veveri 97 Brno Czech Republic 61142 42, Czech Republic
Citazione:
L. Krivankova et al., "Capillary zone electrophoresis and micellar electrokinetic chromatography of solution of polyaniline particles", ELECTROPHOR, 21(3), 2000, pp. 627-632

Abstract

The behavior of two different fractions of the electrically conducting polymer polyaniline (PAN1) was studied in order to characterize them using fast, simple, and cheap methods of capillary zone electrophoresis. In contradistinction to the expectations that the particles will bear a positive charge on their surface, in the milieu of electrolytes used for electrophoresis (0.01-0.05 M buffers of pH 4-8.5), the surface was demonstrated to be slightly negatively charged, which led to a slow migration to the anode. An evident charge was given to the particles after their interaction with micellesformed from surface active components, cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS). An active electrophoretic migration and full separation of the PANI fractions was achieved by micellar electrokinetic chromatography (MEKC) with negatively charged SDS micelles. With this method, a reliable qualitative as well as quantitative analysis was performed in the concentration range of 0.1-1.6 mg/mL with a reproducibility of migration times better than 1.5%.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 19:18:05