【摘要】 以可溶性淀粉为原料,以Span60和Tween60为复配乳化剂,N,N′-亚甲基双丙烯酰胺(MBAA)为交联剂,在反相悬浮体系中以K2S2O8-NaHSO3引发剂合成中性淀粉微球,再用醚化剂GTA与中性淀粉微球反应,制得阳离子淀粉微球。并利用红外光谱、扫描电镜、粒度分析仪对阳离子淀粉微球进行了表征分析。结果表明:制备的阳离子淀粉微球形态圆整、表面粗糙、平均粒径20.2μm;红外测试表明:淀粉和MBAA发生交联反应,并接枝有季胺盐阳离子基团;以亚甲基蓝为有机小分子模型,研究了微球对亚甲基蓝的吸附特征,阳离子淀粉微球对亚甲基蓝的吸附行为符合Langmiur方程和Freundlich方程。更多还原

【Abstract】 Soluble starch as raw materials and Span60 and Tween 60 as complex emulsifier, N,N’-methylene-acrylamide (MBAA) crosslinker, in the inverse suspension system to trigger K2S2O8 -NaHSO3 Synthesis ofneutral starch microspheres, and then ether agent GTA starch microspheres and neutral response system in the cationic starch microspheres. And use of infrared spectroscopy, scanning electron microscopy, particle size analyzer on the cationic starch microspheres were characterized analysis. The results showed that: starch- cation of the ball the whole round shape, surface roughness, the average size of 20.2 μm. Infrared tests showed that: starch and MBAA in cross -linking reaction, and grafted a quaternary ammonium salt cation group. To methylene blue for small organic molecules model to study the microspheres on methylene blue adsorption characteristics, cation starch microspheres methylene blue on the adsorption of the equation and Langmiur Freundlich equation.更多还原