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- W2387044987 abstract "The [Gly]Cl ionic liquid was synthesized and its structure was confirmed by 1H-NMR,and then the succinyl chitosan was prepared successfully in the aqueous solution of 2% [Gly]Cl ionic liquid. The structure of the product was characterized by XRD and FT-IR. The results indicate that the -OCH2CH2COOH is introduced to the chitosan molecule. The intra and inter hydrogen bonds in the chitosan are weakened,therefore,its water-solubility is improved remarkably. The influences of the mole ratio of succinic anhydride and the amino group of chitosan,and the reaction time and temperature on the degree of substitution were investigated respectively. The suitable reaction conditions found are as follows:n(succinic anhydride):n(chitosan)=2.75:1,reaction time is 4 h and reaction temperature is 40℃. Under above conditions,the degree of substitution of succinyl chitosan can be over 90%. The reusability of the ionic liquid was also investigated,and it was found that the [Gly]Cl ionic liquid can be reused for 3 times without any retreatment,and the degree of substitution still can keep being above 90%." @default.
- W2387044987 created "2016-06-24" @default.
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- W2387044987 date "2009-01-01" @default.
- W2387044987 modified "2023-09-22" @default.
- W2387044987 title "A New Preparation Method of Succinyl Chitosan" @default.
- W2387044987 hasPublicationYear "2009" @default.
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