摘要：采用复凝聚法以丝素蛋白(SF)和三聚磷酸钠(STPP)为壁材制备缓释茉莉香精微胶囊。本课题考察了丝素蛋白用量、芯壁比、壁材配比和乳化剂用量等对于缓释茉莉香精微胶囊的包覆效果及其性能的影响。并采用显微镜、纳米粒度仪、红外光谱仪和热重分析仪对缓释茉莉香精微胶囊结构进行表征。当丝素蛋白的用量为1%wt，芯壁比为2:1，壁材配比为1:1，乳化剂用量为7%wt时，对茉莉香精的包覆效果最好，性能最优。红外光谱和热重分析表明茉莉香精微胶囊已包覆成功。将茉莉香精微胶囊用在皮革加香中能更好地掩盖皮革的难闻气味，并且拥有较好的缓释作用。79923

毕业论文关键词：复凝聚法；茉莉香精；丝素蛋白；微胶囊；皮革加香。

Preparation of Sustained-release Jasmine Essence and Its Application in Leather

Abstract: By complex coacervation with silk fibroin (SF) and sodium tripolyphosphate (STPP) as wall material to prepare sustained-release Jasmine microcapsules。 This paper investigated the silk fibroin concentration, core wall ratio, coating effect and characteristic of the wall material and the ratio of emulsifier to release Jasmine microcapsules。 And by using the microscope, nanoparticle size analyzer, infrared spectroscopy and thermal gravimetric analyzer on the release of jasmine microcapsules were characterized。 When the concentration of silk fibroin was 1%wt, core wall ratio is 2:1, ratio of wall material was 1:1, the dosage of emulsifier is 7%wt, the best coating effect of jasmine essence IR optimal performance。 And thermogravimetric analysis showed that Jasmine microcapsules have been coated successfully。 And the jasmine microcapsule can better hide leather in the leather perfuming smell, and has good slow release effect。 

Key Words: Complex coacervation; Jasmine essence; Fibroin; Microcapsule; Leather perfuming。

目录

1。绪论 3

1。1茉莉香精 3

1。2 微胶囊的定义 3

1。3 微胶囊化的意义 3

1。4 微胶囊的制备方法 4

1。5 香精微胶囊的评价指标 6

1。6 丝素蛋白特点与研究现状 7

1。7本课题的研究目的和意义 7

2。实验部分 9

2。1 实验材料试剂和仪器设备 9

2。1。1 实验材料试剂 9

2。1。2 实验仪器设备 9

2。2 茉莉香精与微胶囊的制备 9

2。2。1 茉莉香精的制备 9

2。2。2 茉莉香精微胶囊的制备 10

2。2。3 探索单因素实验优化 11

2。3茉莉香精微胶囊的性能表征 12

2。3。1 光学显微镜 12

2。3。2 纳米粒度仪 12

2。3。3 热重分析 12

2。3。4 红外光谱测定 12

2。4。5 皮革加香应用 12

3。 结果与讨论 13

3。1 探索单因素实验优化 13

3。1。1 丝素蛋白用量的影响 13