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The influence of organic and inorganic acids on chitosan/glycerophosphate (CS/GP) hydrogel has been investigated by dissolving chitosan in different acids. The results of gelation showed that all of the chitosan dissolved in monovalent acid solutions (i.e., formic, acetic, propionic, butyric, isobutyric, lactic, nitric, hydrochloric, and chloroacetic acid), when neutralized by GP solution, could transform...
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