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To improve the physiochemical properties of gellan gum(GG), GG was modified with acrylamide and trimethylolpropane triglycidyl ether(TTE). The structure and morphology of modified GG were characterized by Fourier transform infrared(FT-IR) spectroscopy, X-ray diffraction(XRD), differential scanning calorimetry(DSC) and scanning electron microscopy(SEM). The characteristic peaks at 3448, 2788, 1654, 1411, 1117 and 1044 cm~(-1) in the FT-IR spectrum confirm the modification. The XRD and DSC data revealed that the modification enhanced the thermal stability of GG. SEM analysis suggested the modification introduced a porous microstructure, resulting in the adsorption of crystal violet. In addition, the adsorption capacity, thermal stability and swelling property of GGTTE3 were superior to GGTTE1, GGTTE2, GGTTE4 and GGTTE5. 相似文献
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