Determination of substitution degree of N-Alkyl Chitosan by Acid-Base Conductometric Titration

LUO Ju-xiang; LI You-hua; ZHENG Huan; DONG Mei-hong

doi:10.13386/j.issn1002-0306.2014.07.004

LUO Ju-xiang, LI You-hua, ZHENG Huan, DONG Mei-hong. Determination of substitution degree of N-Alkyl Chitosan by Acid-Base Conductometric Titration[J]. Science and Technology of Food Industry, 2014, (07): 268-271. DOI: 10.13386/j.issn1002-0306.2014.07.004

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Determination of substitution degree of N-Alkyl Chitosan by Acid-Base Conductometric Titration

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The sample of N-Alkyl Chitosan was dissolved in excess HCl which then was titrated by standard NaOH. The change of conductivity of N-Alkyl Chitosan in the acid-base titration was studied. The conductivity of the solution was detected and the substitution degree of N-Alkyl Chitosan was calculated.The RSD of the method was 1.37%.The substitution degree had no significant difference when the conditions of the experiment were changed ( p >0.05) .The method was easy, accurate, reliable with good repeatability.

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Determination of substitution degree of N-Alkyl Chitosan by Acid-Base Conductometric Titration

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