SYNTHESIS AND CHARACTERIZATION OF QUATERNIZED CARBOXYMETHYL CHITOSAN UNDER MICROWAVE IRRADIATION IN AQUEOUS SOLUTION
The present study was to prepare quaternized carboxymethyl chitosan (QCMC) rapidly using an innovative approach under microwave irradiation in aqueous solution without isopropyl alcohol. The QCMC structure was characterized by means of FT-IR, XRD, 1H-NMR and 13C-NMR spectroscopy. Its thermal stability was measured by TGA, and gel permeation chromatography-laser light scattering (GPC-LLS) analyzed its weight-average molecular weight (Mw). Structure characterizations and surface analysis proved that QCMC was successfully synthesized. The max degree of substitution (DS) of carboxymethyl group and quaternary ammonium group under the optimum reaction conditions was 0.82 and 0.48, respectively. This study revealed that the microwave irradiation method without organic solvent is a rapid and environment-friendly process to obtain chitosan derivative.
quaternized carboxymethyl chitosan aqueous solution microwave irradiation
Liu Bo Wang Xiaoying Yang Bin Sun Runcang
State Key Laboratory of Pulp & Paper Engineering,South China University of Technology, Guangzhou,510 State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry, Chinese Academy of State Key Laboratory of Pulp & Paper Engineering,South China University of Technology, Guangzhou,510
国际会议
广州
英文
101-104
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）