黄原胶-丙烯酰胺-三羟甲基丙烷三缩水甘油醚水凝胶的合成与表征。
The synthesis and characterization of a xanthan gum-acrylamide-trimethylolpropane triglycidyl ether hydrogel.
机构信息
Agricultural Bio-Resources Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350003, PR China.
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, PR China; China-Ireland International Cooperation Laboratory of Foods Material Science and Structural Design, Fujian Agriculture and Forestry University, Fuzhou, Fujian, PR China.
出版信息
Food Chem. 2019 Jan 30;272:574-579. doi: 10.1016/j.foodchem.2018.08.083. Epub 2018 Aug 21.
To improve the thermal stability and adsorption performance, xanthan gum was modified with acrylamide and trimethylolpropane triglycidyl ether (TTE). The modified xanthan gum (XGTTE) was characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffractogram (XRD), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The characteristic peaks at 3449, 1655, 1611 and 1420 cm in the FT-IR confirm the modification. The XGTTE crystal grew well upon addition of TTE. The XRD and DSC data revealed that the XGTTE enhanced its thermal stability. Analysis of SEM revealed that the grafting introduced major changes on the microstructure making it porous and resulting in the adsorption of crystal violet (CV) with flocculation. The CV adsorption capacity of the hydrogel with different dosages of TTE (XGTTE2, XGTTE3, XGTTE4, XGTTE5 and XGTTE6) were between 28.13 with 35.12 mg/g. In addition, the adsorption capacity, thermal stability, and swelling property of XGTTE4 were the best.
为了提高热稳定性和吸附性能，用丙烯酰胺和三羟甲基丙烷三缩水甘油醚（TTE）对黄原胶进行了改性。用傅里叶变换红外（FT-IR）光谱、X 射线衍射图（XRD）、差示扫描量热法（DSC）和扫描电子显微镜（SEM）对改性黄原胶（XGTTE）进行了表征。FT-IR 中的 3449、1655、1611 和 1420 cm 处的特征峰证实了修饰的发生。加入 TTE 后，XGTTE 晶体生长良好。XRD 和 DSC 数据表明，XGTTE 提高了其热稳定性。SEM 分析表明，接枝在微观结构上引入了主要变化，使其多孔，并导致结晶紫（CV）的絮凝吸附。不同 TTE 用量（XGTTE2、XGTTE3、XGTTE4、XGTTE5 和 XGTTE6）的水凝胶对 CV 的吸附容量在 28.13 至 35.12 mg/g 之间。此外，XGTTE4 的吸附容量、热稳定性和溶胀性能最佳。
Zotero 插件