摘要本课题采用2-甲基咪唑和六水合硝酸锌合成ZIF-8。然后通过TEM、FTIR、XRD等表征手段证实了所得产物为目标产物。

采用静电纺丝法，将PLA和ZIF-8共混溶液进行纺丝，得到多种配比的静电纺丝纤维膜,并通过SEM、FTIR、XRD、TG、DSC等手段对纤维膜的物质结构和性能测试分析。另外还对纤维膜的力学性能和油水分离效率进行了测试。测试发现，添加不同含量的ZIF-8会改变纤维膜的直径尺寸和表面粗糙度，同时也会影响纤维膜的热稳定性。与纯PLA纤维膜相比，PLA/ZIF-8纤维膜的拉伸强度和断裂伸长率有了显著提高；PLA/ZIF-8纤维膜有很好的油水分离效果。77967

毕业论文关键词 ZIF-8 静电纺丝 纤维膜

Title    Preparation of PLA/ZIF-8 fiber membrane and its   properties

Abstract In this paper, the 2-methyl imidazole and Zn(NO3)2 ∙ 6H2O are used to synthesize ZIF-8。 Then the substance was confirmed by characterization methods such as TEM, FTIR, XRD and so on。

Using electrostatic spinning, we spin the mixed solution of PLA and ZIF-8, and a variety of electrospun fibrous membrane was obtained。 Then, by means of SEM, FTIR, XRD, TG and DSC, we analyze the structure and performance of fiber membrane。 In addition, the fiber membrane’s mechanical properties and oil-water separation efficiency were also tested。 It was found that the addition of different content of ZIF-8 can change the diameter and surface roughness of the fiber membrane, and can also affect the thermal stability of the fiber membrane。 Compared with pure PLA fiber membrane, PLA/ZIF-8 fiber membrane’s tensile strength and elongation at break are significantly improved; PLA/ZIF-8 fiber membrane achieves a great separation efficiency in oil and water。

Keywords  ZIF-8   electrostatic spinning   fiber membrane

目 次

1 引言 1

1。1 静电纺丝法简介 1

1。1。1 静电纺丝法原理及影响因素 1

1。1。2 静电纺丝法的研究进展 2

1。2 聚乳酸简介 2

1。2。1 聚乳酸的应用 2

1。2。2 聚乳酸的合成方法 3

1。3 金属有机骨架材料（MOFs）简介 3

1。3。1 金属有机骨架的研究进展 4

1。3。2 ZIF-8材料的特点 5

1。3。3 金属有机骨架的合成方法 5

1。3。4 金属有机骨架材料的应用领域 5

1。4 金属有机骨架聚乳酸复合材料的简介 6

1。5 本课题的研究方法及其意义