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Light Industry & Chemical Engineering Research Institute South China University of Technology
网络首发:2009-12-04,
纸质出版:2009
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Ultrasonic-assisted condensation of chitosan with salicylaldehyde[J]. 海洋湖沼学报(英文), 2009,27(4):882-886.
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
Ultrasonic-assisted condensation of chitosan with salicylaldehyde[J]. 海洋湖沼学报(英文), 2009,27(4):882-886. DOI: 10.1007/s00343-009-9204-1.
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:
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
pH
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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