摘要超分子作为极有发展前途的一个新兴领域,将不同的分子通过非共价键的相互作用结合在一起,形成具有稳定结构的超分子。超分子化学是超分子领域中最受关注的方向之一,超分子化学利用超分子能够自组装的特点,可以将分子根据实际的需要,经过设计、调节合成为需要的目的分子。环糊精由于是从淀粉中提取而得,价格便宜且拥有构建超分子良好的结构特征,成为构建超分子最常用的药品之一。20世纪90年代,科学家们将α-环糊精和聚合物大分子合成了超分子的结构,在聚合物大分子和超分子之间架起了一座桥梁,也开始了超分子化学的另一个新篇章!本文通过利用亲/疏水相互作用将β-环糊精和聚乙二醇-聚丙二醇-聚乙二醇三嵌段共聚物合成了具有超分子结构的复合物,并对其进行表征。合成的超分子复合物将用于改性聚甲醛中。47721
毕业论文关键词: 超分子; 环糊精; 三嵌段共聚物
Abstract Supramolecule is one of the new projects that have the best development prospect. It has combined different molecules together using the non covalent bond interaction, and formed a supramoleucle that has the steady structure. Supramolecular chemistry is one of the most popular ways in the supramolecule, and it uses the feature of the supramolecular that is the self-assembled. According to the several needs in the real life, the molecules can be designed and adjusted, and the aimed molecule can be synthetized. Cyclodextrin is collected from the farina, and not only its price is low but also it has the best structure of forming the supramolecule. So the cyclodextrin becomes one of the usual reagents of forming the supramolecule. Since the 1990s, the scientists used the α-cyclodextrin and polymers to synthetize a supramolecule. A bridge linked the polymer and the supramolecule has been built, and opened a new door to the supramolecular chemistry. This article will describe the synthesis and characterization of the β- cyclodextrin and poly(ethylene glycol)-block-poly(propylene glycerol)-block- poly(ethylene glycol) copolymer supramolecular complex. What’s more, the supramolecular complex will be used to improve the polyoxymethylene.
Keyword: Supramolecule; Cyclodextrin; Copolymer
目录
一、引言 1
(一) 超分子化学 1
1.1.1 概述 1
1.1.2 非共价键相互作用 2
1.1.3 分子识别 4
1.1.4 环糊精在超分子中的应用 4
(二)环糊精在高分子中的应用 5
1.2.1 环糊精包合物形成 5
1.2.2 环糊精与高分子的包合物 6
1.2.3 环糊精作为高分子成核剂的应用 7
(三)聚甲醛 7
1.3.1 概述 7
1.3.2 聚甲醛的改性研究 8
1.3.3环糊精与高分子的包合物改性聚甲醛 8
(四)三嵌段共聚物的选择 9
二、实验 10
(一)材料 10
(二)共聚物超分子复合物的制备 10
(三)β-环糊精与三嵌段共聚物超分子复合物的表征 12
2.3.1、广角X射线衍射仪