Analysis of cellulose degradation products by capillary electrophoresis

The characterization of a degraded cellulose solution was performed using capillary electrophoresis with indirect UV absorption. Chromogenic probes of various mobilities were tested to evaluate electromigration dispersion for all analytes. The best compromise was obtained with nicotinate, which exhi...

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Bibliographic Details
Published inJournal of Chromatography A Vol. 804; no. 1; pp. 363 - 370
Main Authors Motellier, S, Richet, C, Merel, P
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 24.04.1998
Elsevier
Subjects
Applied sciences
Cellulose
Exact sciences and technology
Organic acids
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
Buffer composition
Organic acids
Cellulose
Chemical analysis
Zone electrophoresis
Phase composition
Capillary electrophoresis
Mobile phase
Ultraviolet detector
Indirect method
Carboxylic acid
pH
Oside polymer
Degradation product
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Summary:The characterization of a degraded cellulose solution was performed using capillary electrophoresis with indirect UV absorption. Chromogenic probes of various mobilities were tested to evaluate electromigration dispersion for all analytes. The best compromise was obtained with nicotinate, which exhibited a mobility intermediate between that of the slowest analyte (isosaccharinate) and that of the fastest (formate). The optimization of the separation was obtained by modification of the electrolyte pH: decreasing the pH selectively modified the effective electrophoretic mobility of the degradation compounds and thereby increased their resolution. It was found that the optimum pH range was very narrow (5.0<pH<5.4), and needed careful control with an appropriate buffer.
ISSN:0021-9673
DOI:10.1016/S0021-9673(97)01237-5