SCANNING-TUNNELING-MICROSCOPY OF XANTHAN GUM

Authors
GUNNING AP MCMASTER TJ MORRIS VJ
Citation
Ap. Gunning et al., SCANNING-TUNNELING-MICROSCOPY OF XANTHAN GUM, Carbohydrate polymers, 21(1), 1993, pp. 47-51
Citations number
27
Categorie Soggetti
Chemistry Inorganic & Nuclear","Polymer Sciences
Journal title
Carbohydrate polymers → ACNP
ISSN journal
01448617
Volume
21
Issue
1
Year of publication
1993
Pages
47 - 51
Database
ISI
SICI code
0144-8617(1993)21:1<47:SOXG>2.0.ZU;2-7
Abstract
Scanning tunnelling microscopy (STM) has been used to obtain images of the bacterial polysaccharide xanthan gum. The polysaccharide was depo sited onto highly oriented pyrolytic graphite from a concentrated (100 mg ml-1) aqueous dispersion. The viscoelastic deposit was sheared in order to induce molecular alignment and then imaged in air. STM studie s revealed aggregates of stiff, aligned rod-shaped molecules.