Ultrasonic-assisted condensation of chitosan with salicylaldehyde

Lihong Duan; Siyuan Guo; Jinqing Yang; Shengquan Ye; Zhaomei Wang; Kaijun Xiao; Bisheng Zheng

doi:10.1007/s00343-009-9204-1

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Ultrasonic-assisted condensation of chitosan with salicylaldehyde

Updated：2023-05-16

- Ultrasonic-assisted condensation of chitosan with salicylaldehyde
- Journal of Oceanology and Limnology Vol. 27, Issue 4, Pages: 882-886(2009)
- Affiliations：
  
  Light Industry & Chemical Engineering Research Institute South China University of Technology
- Author bio：
- Funds：
- DOI：10.1007/s00343-009-9204-1
  CLC：
- Online First：04 December 2009，
  
  Published：2009
- Accepted：
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Duan, L., Guo, S., Yang, J. et al. Ultrasonic-assisted condensation of chitosan with salicylaldehyde., Chin. J. Ocean. Limnol. 27, 882–886 (2009). https://doi.org/10.1007/s00343-009-9204-1
DOI：

Duan, L., Guo, S., Yang, J. et al. Ultrasonic-assisted condensation of chitosan with salicylaldehyde., Chin. J. Ocean. Limnol. 27, 882–886 (2009). https://doi.org/10.1007/s00343-009-9204-1 DOI：

摘要

Abstract

In order to synthesize an improved adsorbent for heavy metal ions

we studied the condensation reaction of chitosan with salicylaldehyde in ethanol to form a Schiff base. The effect irradiating the reaction using an ultrasonic liquid processor was contrasted with conventional methods. The IR spectra of condensed chitosan prepared by the two methods showed that their molecular structures were identical. The reaction conditions

including solvents

ultrasonic power density and irradiation time

and reactant ratio

were optimized by orthogonal design. A shorter reaction time and a higher product yield were obtained using ultrasonic-assisted synthesis compared with the traditional method. A condensation degree of 89.63% was achieved using the optimized conditions: i.e. ultrasonic irradiation at 180 W for 60 min; 95% ethanol as the solvent

pH 4.0

and salicylaldehyde:chitosan ratio of 6:1.

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Keywords

references

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