摘要本论文实验部分采用离子液体为溶剂，微晶纤维素、壳聚糖、桑枝粉为原料，采用物理成孔法制备得到各种海绵。采用扫描电子显微镜（SEM）和红外光谱对海绵的性质进行分析。研究结果显示：以[EMIM][DEP]（1-乙基-3-甲基-咪唑-磷酸二乙酯）和[EMIM][Cl]（1-乙基-3-甲基氯盐）为溶剂的纤维海绵成型效果较好；以无水硫酸钠，碳酸钠，氯化钠为成孔剂制备得到的海绵中，无水硫酸钠对应的海绵孔隙较大为100～250m，海绵的电镜图截面成蜂窝状，并且以无水硫酸钠作为成孔剂制备得到的海绵的吸水保湿性是三种成孔剂中最好的，其吸水倍数和保湿倍数分别为6。8和5。6，氯化钠次之为4。7和4。3，碳酸钠最差为3。0和2。8；无水硫酸钠用量应为药品总质量的4倍时海绵的综合性能较好；成型温度在80℃下成型效果较好，成品海绵较为蓬松，不易因拉伸而发生断裂，但需要较长成型时间，根据海绵种类不同，时间约为3h～7。5h，90℃成型下的海绵虽不如80℃的海绵，但容易成型，不会轻易拉伸断裂。84086

在本论文研究条件下，以[EMIM][Cl]作为溶剂，[EMIM][Cl]的用量是微晶纤维素，桑枝粉末的25倍，壳聚糖的15倍，无水硫酸钠作为成孔剂，成孔剂用量是药品总质量的4倍，成型温度90℃的条件下制备得到的各种海绵具有较好的性质。

毕业论文关键词：离子液体；微晶纤维素；壳聚糖；桑枝粉末；纤维海绵

Abstract In this thesis, cellulose sponges were prepared by using the ionic liquid as the solvent, microcrystalline cellulose, chitosan, mulberry powder as raw material and using physical pore forming method。 The properties of sponge were analysed by SEM and infrared spectroscopy。 Research results show that in [EMIM] [DEP] (1- ethyl-3-methyl - imidazole - diethyl phosphate) and [EMIM] [Cl] (1- ethyl-3-methyl-chloride) as solvent, sponge molded fiber is better。 The corresponding sponge pores of anhydrous sodium sulfate are large which is 100～250m, electron micrographs of sponge into honeycomb section, and anhydrous sodium sulfate as a moisture absorbent sponge prepared by pyrogen is three kinds of pore forming agent in the best and the water absorbency and moisturizing factor respectively 6。8 and 5。6, sodium chloride times for 4。7 and 4。3, sodium carbonate was the worst for 3。0 and 2。8。 The amount of anhydrous sodium sulfate should be 4 times of the total mass of the medicine, and its comprehensive performance is better。 Molding temperature of 80℃, the effect is better。 Finished sponge is more fluffy, not easy to exit due to tensile but need a longer molding time。 According to the different types of sponges, the time is about 3h～7。5h。 90℃ below the sponge is not as good as 80℃ sponge, but the molding effect is still good。 It is hard to break because of stretching。

The amount of [EMIM][Cl] is 25 times of microcrystalline cellulose, mulberry powder, 15 times of chitosan。 Anhydrous sodium sulfate was used as a pore forming agent, the amount of pore forming agent is 4 times the total mass of the drug。 Molding temperature 90℃。Under the conditions of this paper, The preparation of various kinds of sponge has useful properties。

Keywords: Ionic Liquids; Microcrystalline cellulose; Chitosan; Mulberry powder；Fiber sponge

目  录

第一章 绪论 1

1。1 海绵的概述 1

1。2 天然纤维素简介 1

1。2。1 植物纤维的种类及特点 2

1。2。2 纤维素的理化性质 2

1。2。3 纤维素的处理 3

1。3 壳聚糖的简介