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2006•Polymer Science Series BRequires access

Measurement of molecular mass of chitosan oligomers

Elena I. Cherkasova, Л. А. Смирнова, В. Ф. Смирнов

Open publisher page 4 citations

Abstract

The molecular mass of chitosan oligomers in the range of (2-5) × 103 was measured using viscometry and gel permeation chromatography. The use of viscometers with a flow time of at least 108 s (0.33 M CH3COOH + 0.3 M NaCl as a solvent, 21°C, [η] = 3.41M 1.02) makes it possible to determine the molecular mass of chitosan oligomers up to 1.98 × 103. In this case, the maximum divergence in the molecular mass values of oligomers determined by viscometry and gel permeation chromatography does not exceed 4%.

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What this paper is about

The molecular mass of chitosan oligomers in the range of (2-5) × 103 was measured using viscometry and gel permeation chromatography. The use of viscometers with a flow time of at least 108 s (0.33 M CH3COOH + 0.3 M NaCl as a solvent, 21°C, [η] = 3.41M 1.02) makes it possible to determine the molecular mass of chitosan oligomers up to 1.98 × 103. In this case, the maximum divergence in the molecular mass values of oligomers determined by viscometry and gel permeation chromatography does not exceed 4%.

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Available abstract

The molecular mass of chitosan oligomers in the range of (2-5) × 103 was measured using viscometry and gel permeation chromatography. The use of viscometers with a flow time of at least 108 s (0.33 M CH3COOH + 0.3 M NaCl as a solvent, 21°C, [η] = 3.41M 1.02) makes it possible to determine the molecular mass of chitosan oligomers up to 1.98 × 103. In this case, the maximum divergence in the molecular mass values of oligomers determined by viscometry and gel permeation chromatography does not exceed 4%.

Key concepts: Viscometer, Gel permeation chromatography, Molecular mass, Chitosan, Chemistry, Chromatography, Solvent, Permeation

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