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Citation: LI Hai-Tao, WANG Mei-Ling, ZHANG You-Yu, HE Bing-Lin. Aggregation Behavior of Chitosan in Dilute Aqueous Solution[J]. Chinese Journal of Applied Chemistry, ;2004, 21(2): 159-163. shu

Aggregation Behavior of Chitosan in Dilute Aqueous Solution

1.
a College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081;
2.
b State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Institute of Polymer Chemistry, Nankai University, Tianjin

Corresponding author: LI Hai-Tao,
Received Date: 24 April 2003
Available Online: 20 October 2003
Fund Project: 教育部高等学校博士点基金资助项目(20010055009) (20010055009)

The aggregation behavior of chitosan(CS) has been investigated with fluorescence probe technique. The fluorescence emission spectra and fluorescence polarization(p value) of 1,6-diphenyl hexatriene(DPH) in dilute aqueous solutions of CS were measured. Results indicate chitosan is able to self-aggregate and the aggregation could be obviously accelerated by the presence of sodium dodecylsulfate(SDS) in 0.1 mol/L acetic acid solution. The fluorescence emission of DPH was enhanced remarkably as the concentration of chitosan was 1.0 g/L. During the aggregation process, the structure of chitosan chains is transformed from stretched chains into coils and further transformed into intertwist coils.
- chitosan,
- fluorescence probe,
- fluorescence polarization,
- aggregation behavior
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