Summary
Electron microscopy of xanthan adsorbed to positively charged carbon coated grids indicates that this technique can yield reliable informations about the structure of the molecule. The results presented in the present work suggest that the xanthan exists only as single stranded wormlike molecules in clean dilute solutions. In contrast the electron micrographs obtained with native and renatured xanthans adsorbed to uncharged supports indicate side by side associations. A possible role of the acetyl substituent content on this behavior is suggested.
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Milas, M., Rinaudo, M., Tinland, B. et al. Evidence for a single stranded xanthan chain by electron microscopy. Polymer Bulletin 19, 567–572 (1988). https://doi.org/10.1007/BF00283103
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DOI: https://doi.org/10.1007/BF00283103