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以一氯三嗪-β-环糊精(MCT-β-CD)为壁材,晚香玉香精为芯材,通过包合法制备一氯三嗪-β-环糊精晚香玉香精纳米粒。研究了壁材与芯材的质量比、乙醇与水的体积比、反应时间、反应温度、搅拌速度对晚香玉香精纳米粒粒径的影响,并采用动态激光光散射仪(DLS)、透射电镜(TEM)、红外光谱(IR)及热重分析仪(TGA)对其结构及性能进行了表征。结果表明:在V(乙醇)∶V(水)=1∶0.67,m(香精)∶m(壁材)=1∶15,反应时间10 h,搅拌速度1 300 r/min,温度为35℃的条件下制备的晚香玉香精一氯三嗪-β-环糊精纳米粒的粒径为216.4 nm,粒径分布系数(PDI)为0.221,香精装载量达17.2%,能减缓高温下香精的释放速率。 相似文献
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The aroma sustained-release cotton fabric was prepared by finishing rose fragrance nanocapsules directly on cotton.The structure and properties of nanocapsules were demonstrated by transmission electron microscope(TEM),dynamic light scattering(DLS),fourier transform infrared spectrometer(FTIR),X-ray diffraction (XRD),gas chromatography-mass spectrometry(GC-MS)and electronic nose.The results showed that the spherical nanocapsule dispersed evenly and the average diameter kept 51.4 nm.The existence of COO peak(1741 cm? 1)in the FTIR curve of the finished cotton fabric and the decrease of crystallinity demonstrated that rose fragrance nanocapsules have been incorporated into the cotton fabrics.The washing resistance of the cotton fabrics finished by 51.4 nm nanocapsules was much better than that by rose fragrance alone.Besides,the loss of fragrance from the cotton fabrics finished by 51.4 nm nanocapsules was obviously lower than that by 532 nm nanocapsules and rose fragrance.The smaller the nanocapsule size,the better the sustained release property.Electronic nose analysis also displayed that the aroma released from the cotton fabrics finished by nanocapsules after washing has no obvious variety in contrast to that without washing.The cotton fabrics finished by nanocapsules has the excellent sustained release property. 相似文献
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运用气相色谱-质谱联用技术对清新东方香水香精的香气成分进行了分析,结合香气感官评定对香韵结构进行了研究,得到了61种芳香化合物,其中柑橘香韵化合物14种、清香韵化合物13种、花香韵化合物16种、浆果香韵化合物5种、琥珀香韵化合物10种;并通过香精调配技术考察了不同香气组成和香韵结构对模拟香精香气质量的影响,得到了较为优化的香精配方和样品;此外,利用香气指纹分析(电子鼻)技术对模拟香精的香气相似度进行定量分析,其香气相似度可达94.77%。 相似文献
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重点研究了棉织物经薰衣草香精微胶囊浸渍加香后,三种干燥方式(真空干燥、热风干燥和自然晾干)对其香气品质的影响.结果表明,干燥方式对加香棉织物的香气品质存在较大影响.热风干燥处理导致加香棉织物香气受损较大,而真空干燥和自然晾干处理的棉织物香气成分变化较小,有利于香气物质的保留,可保持香气品质稳定.但自然晾干耗时长、受环境... 相似文献
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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。 相似文献
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