在乳液体系下采用离子聚合法制备了聚氰基丙烯酸丁酯包覆玫瑰香精纳米胶囊,采用红外光谱(FT-IR)、扫描电镜(SEM)、动态激光光散射(DLS)、热失重(TGA)和电子鼻对该纳米香精胶囊进行性能表征.结果表明,纳米香精胶囊中聚氰基丙烯酸丁酯与香精有一定氢键作用.纳米香精胶囊的粒径约50~60nm,分布均匀且为圆球状.纳米香精胶囊和聚氰基丙烯酸丁酯均有两段热失重,在第一段热失重中纳米香精胶囊的质量损失率较聚氰基丙烯酸丁酯增加了17.45%.上述结果证明香精已被引入纳米胶囊内部.在对纳米香精胶囊和普通香精热处理后发现,纳米香精胶囊的香气强度无明显变化,高于普通玫瑰香精,证明纳米香精胶囊具有良好的稳定性和缓释性.
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