明胶微球的制备及其对直接染料脱色性能研究

以明胶为原料,戊二醛为交联剂,采用乳化交联法制备明胶微球,利用扫描电镜(SEM)和激光粒度分析仪对明胶微球进行表征.探讨了搅拌速度、明胶用量、水油相体积比和乳化剂用量等制备条件对微球粒径的影响,结果表明:微球粒径随搅拌速度和乳化剂用量的增大而减小;随明胶用量和水油相体积比的减小而减小.同时选取了3种常见直接染料直接大红4BE、直接蓝2B和直接黄R,研究明胶微球对直接染料的脱色性能,结果表明:明胶微球对直接染料脱色性能良好,具有潜在的应用前景.

Study on preparation of the gelatin microspheres and its decolorization performance for the direct dyes

The gelatin microspheres were prepared by the emulsion-crosslinking method,using the gela tin as raw material and glutaraldehyde as crosslinking agent.The gelatin microspheres were characterized by scanning electron microscope(SEM) and laser particle size analyzer.The influences of preparation conditions including stirring speed,gelatin dosage,water/oil volume rate and emulsifier dosage on the particle size of the microspheres were studied.The results showed that the particle size of gelatin microspheres decreased with the stirring speed and emulsifier dosage increasing,and decreased with the gelatin dosage and the water/oil volume rate decreasing.The decolorization behavior of the gelatin microspheres for the common direct dyes in cluding Direct Red 4BE,Direct Blue 2B and Direct Yellow R were also studied.The results indicated that the gelatin microspheres had good decolorization performance for the direct dyes and had a potential application prospect.