I have read in some reports that sulfate groups are a problem for crystalline cellulose but, I do not understand yet what is the problem. Is it something related with biocompability or hydrophilicity?
Dear Juan Arenas,
It can be related with stability of the cellulose macromolecule. The sulfate groups may be hydrolysed because of the free hydroxyl groups in the molecule and water. Later on the released free sulfuric acid may be problem to cellulose chain stability and/or to other application components if it used for any composition.
We studied stability of the sodium cellulose sulfate on the disposition of the sulfate groups and found that most labile substituted group may be in the third position of OH group in AGU and it will be explained with more affected OH-group with other groups in case of inter- and intramolecular hydrogen bonds.
Thank you for the help! I finally got the explanation. Something is clear now, I have to work further in my research using enzimatic hydrolysis.
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