摘要：本课题以聚丙烯酸酯为壁材，对百里香精油进行包覆，考察了乳化剂、精油用量和壁材用量对纳米精油胶囊粒径的影响，对该胶囊分别采用动态激光光散射分析仪，热重分析仪，傅里叶变换红外光谱分析仪和差示扫描量热仪进行分析。结果表明当乳化剂用量为7%，百里香油用量为1%，壁材用量为11%时，制备的纳米精油胶囊的平均粒径为106.4nm，粒径分布系数为0.167。将该纳米精油胶囊用于加香皮革抗菌测试，对黑曲霉、黄绿青霉和产黄青霉均具有较明显的抗菌性效果，且当采用精油用量为1%时的纳米精油胶囊加香的芳香皮革放置4天后，对黑曲霉、黄绿青霉、产黄青霉的抑菌效果优于采用精油用量为5%和9%时的纳米精油胶囊加香的芳香皮革。由热重分析纳米精油胶囊最高包覆率可达11.06%，且百里香精油的特征峰在该纳米胶囊红外谱图中有较强吸收，由差示扫描量热谱图分析得：精油用量为1%的纳米精油胶囊加香后皮革的热稳定性更强。23963
毕业论文关键词： 纳米精油胶囊；皮革加香；抑菌性；缓释性
Study of antibacterial behavior of essential nanocapsules in the leather fields
Abstract: In this study, polyacrylate was used as wall-membrane material to clad thyme oil and inspect the effect of the variety of emulsifier, the dosage of emulsifier and oil on the size of nanocapsule. And then use, Zetasizer Nano ZC, TGA and FTIR to analysis it. It shows that the average size of nano-oil capsules prepared by 7% of Tween20 and AEO9, 1% of thyme oil and 11% of wall material is 106.4nm whose particle size distribution coefficient is 0.167. It turns out to be more antibacterial using 1% of oil than those using 5% and 9% of oil. Encapsulation rate is 11.06% analysised by TGA with characteristic absorption peak of thyme oil. It has obviously antibacterial character when used in the leather fields. In addition, The Thermal stability of leather added by essential oil nanocapsule were obtained by DSC showed that the thermal stability were more stronger when essential oil content is 1%.
目 录
1 绪论 1
1.1 前言 1
1.2 微胶囊技术 2
1.2.1 喷雾干燥法 2
1.2.2 复合凝聚法 2
1.2.3 分子包结法 2
1.2.4 界面聚合法 3
1.3 微胶囊的性能研究 3
1.3.1 微胶囊壳的厚度 3
1.3.2 微胶囊壳的渗透性 3
1.3.3 微胶囊的机械强度 4
1.3.4 微胶囊壳的控释性 4
1.4 微乳液聚合 4
1.5 本课题的研究目的和意义 6
2 实验部分 8
2.1 实验材料 8
2.1.1 实验材料和试剂 8
2.1.2 主要仪器和设备 8
2.2 精油抑菌性能的研究 9
2.2.1 培养基的制备 9
2.2.2 菌悬液的制备 9
2.2.3 抑菌性能的测定 9
2.3 乳化剂乳化效果的研究 9
2.3.1 乳化剂种类影响 9
2.3.2 均质作用 10
2.4 精油纳米微胶囊制备工艺的研究 10
2.4.1 纳米精油胶囊的制备 10
2.4.2 初期探索实验 11
2.4.3 精油纳米胶囊的单因素实验 11
2.5 芳香皮革的制备 11
2.6 性能测试与表征 12
2.6.1 纳米精油胶囊的动态激光光散射（DLS）的测定 12 纳米精油胶囊对皮革的抗菌性研究:http://www.youerw.com/huaxue/lunwen_17248.html