Solution properties of xanthan. Light scattering and viscometry on dilute and moderately concentrated solutions

Solution properties of xanthan. Light scattering and viscometry on dilute and moderately concentrated solutions

Elastic and quasi-elastic light-scattering, viscometric and rheological studies are given for solutions of the microbial polysaccharide Xanthomonas campestris (xanthan) in aqueous 0.62N NaCl for polymer concentrations from 0.03 to 2.2 g kg −1. The observed negative ∂ ln[η] ∂ ln T is interpreted as a...

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Veröffentlicht in:Polymer (Guilford) 1988-12, Vol.29 (12), p.2249-2260
Hauptverfasser: Kojima, Takakazu, Berry, G.C.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
association
Exact sciences and technology
gel
light scattering
Natural polymers
persistence length
Physicochemistry of polymers
Starch and polysaccharides
viscometry
xanthan
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Zusammenfassung:Elastic and quasi-elastic light-scattering, viscometric and rheological studies are given for solutions of the microbial polysaccharide Xanthomonas campestris (xanthan) in aqueous 0.62N NaCl for polymer concentrations from 0.03 to 2.2 g kg −1. The observed negative ∂ ln[η] ∂ ln T is interpreted as a decrease of the persistence length with increasing T. The behaviour in moderately concentrated solutions (2
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(88)90119-X