Talk:Xanthan gum
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The viscosity of xanthan gum solutions decreases with higher shear rates, this is called pseudoplasticity. May someone explain what this means? --Abdull 19:52, 10 August 2006 (UTC)
[edit] It's a thickener, isn't it?
But the article would suggest that it's a stabiliser and not that good at thickening, due to high shear rates - which is correct? DavidFarmbrough 14:05, 28 March 2007 (UTC)
Changed the chemical structure to (C35H49O29)n to reflect that it is a polymer of varying chain length. I classified it as a minor edit --Quality Alison 03:01, 7 May 2007 (UTC)
Just a word choice modification. changed "repeating units of five sugar units" to "repeating modules of five sugar units". Listed as minor edit. user: psilosphere
Revised the uses section. I tried to answered David's question on why and when it's working as a thickener and when you want shearing to make it thinner. It's pretty much a classic example and use for xanthan.Sigh NNNs 20:55, 21 August 2007 (UTC)
Cosmetic Use. Not normally used in combination with bentone gels to make water based gels. This is usually done with synthetic polymers such as Carbomers. I think there is possibly a bit of confusion with the synergy exhibited between betonites and Carboxymethylcelluloses. Most common use is for adding stability to o/w emulsions. The chemists weapon of choice. Viscosity isn't the forte of this material. Examining the manufacturers specifications for these materials, they rarely exceed a viscosity of 1500 centipoise at 1% use in water. Compare that to values of 20K+ for materials such as carbomers Valueaddedwater 00:26, 1 October 2007 (UTC)
