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Citation: XIE Ying, LI Ming-Chun, XIN Mei-Hua, ZHAO Huang. Effects of Preparation Conditions of N-Alkyl Chitosan Derivatives on Their Adsorption of Phenol[J]. Chinese Journal of Applied Chemistry, ;2008, 25(10): 1201-1204. shu

Effects of Preparation Conditions of N-Alkyl Chitosan Derivatives on Their Adsorption of Phenol

1.
College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Functional Materials, Quanzhou 362021

Corresponding author: XIN Mei-Hua,
Received Date: 24 December 2007
Available Online: 10 May 2008
Fund Project: 福建省自然科学基金资助项目(E0540001) (E0540001)

N-alkyl chitosan derivatives were synthesized by reducing Schiff` base formed from the reaction of aldehyde and chitosan.The degree of substitution of the modified chitosan was characterized by elemental analysis.The effects of preparation conditions on the degree of substitution and the adsorption of N-alkyl chitosan derivatives were studied.The results showed that reaction time,aldehyde/CTS ratio and reaction temperature were main factors to influence the substitution degree of the N-alkyl chitosan derivatives.Under conditions of aldehyde/CTS of 4/1,reaction temperature of 100℃ and reaction time of 8 h,the substitution degree of the N-alkyl chitosan reached the maximum.It was found that the higher the substituted degree,the better the adsorption capability.In addition,with increasing the N-alkyl chain length,the adsorption capability of the N-alkyl chitosan derivatives for 2,4-dichlorophenol improved until the carbon number of the N-alkyl chain reached seven and then declined after wards.The N-heptaldehyde chitosan exhibited the best adsorption capability.
- chitosan,
- alkylation,
- dichlorophenol,
- absorption
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