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以可溶性淀粉为原料,N,N-亚甲基双丙烯酰胺(MMBA)或环氧氯丙烷(ECH)为交联剂,Span60和Tween60混合为乳化剂,环己烷(80mL)和三氯甲烷(20mL)为油相,采用反相乳液法制备淀粉微球(starch microspheres)。以控制变量法来改变不同物质用量,通过扫描电镜观察微球形貌变化,确定最优的条件:淀粉浓度10%,乳化剂用量0.8g,油水比例3∶1,交联剂选用环氧氯丙烷(4mL)制备淀粉微球。利用红外光谱,扫描电镜,比表面积及孔径分析仪对淀粉微球进行性能表征,为以后应用研究作铺垫。
Using soluble starch as raw material, N, N-methylenebisacrylamide (MMBA) or epichlorohydrin (ECH) as crosslinking agent, Span60 and Tween60 as emulsifier, cyclohexane (80mL) and trichloromethane (20 mL) as oil phase, starch microspheres were prepared by reverse phase emulsion method. The amount of different substances was controlled by the control variable method. The morphologies of the microspheres were observed by scanning electron microscopy. The optimal conditions were as follows: starch concentration 10%, emulsifier 0.8 g, oil-water ratio 3:1, Propane (4 mL) to prepare starch microspheres. The properties of starch microspheres were characterized by infrared spectroscopy, scanning electron microscopy, specific surface area and pore size analyzer to pave the way for future application research.