有机—无机杂化纳米材料的合成及其研究

发布时间：2018-05-21 03:11

本文选题：有机-无机杂化纳米材料 + 聚苯乙烯　；参考：《东华大学》2015年硕士论文

【摘要】：“复合型纳米材料”是指两种或两种以上物质在纳米尺度上以某种方式结合在一起而构成的复合粒子。通过多种材料的复合，实现性能互补和优化，能够制备性能优异的纳米材料。有机-无机杂化纳米材料综合了无机材料、有机材料和纳米材料的优良特性，在力学、热学、光学、电学、生物以及环保等领域中展现出广阔的应用前景。由于聚苯乙烯特有的物理性质及其实际应用，尤其是在生物分离和检测中的应用，关于聚苯乙烯-无机纳米复合材料的研究和应用，正引起人们更广泛的兴趣。本文主要研究了有机-无机杂化纳米材料以及磁性纳米复合材料的合成。本课题按照以下几个方面展开：首先，本文研究了微观形貌和分散性良好的四氧化三铁/聚吡咯烷酮的制备，研究了Fe3O4的量、反应时间和反应温度对复合粒子形成的影响。生成的产物用TEM、XRD、FT-IR和VSM等进行表征，结果表明合成出来分散性良好，具超顺磁性，粒径为18.6nm的四氧化三铁/聚吡咯烷酮复合粒子。其次，研究了聚苯乙烯磁性微球的合成及羧基化修饰，，包括Fe3O4/聚苯乙烯、聚苯乙烯/甲基丙烯酸甲酯和Fe3O4/聚苯乙烯/甲基丙烯酸甲酯复合微球的合成，探索了MMA的量、乳化剂浓度和单体浓度对复合微球的影响。对于聚苯乙烯/聚倍半硅氧烷的合成，探索了不同酸浓度下合成的聚倍半硅氧烷和聚倍半硅氧烷与苯乙烯单体体积比对聚苯乙烯/聚倍半硅氧烷复合颗粒的影响。在乳液聚合中，当乳化剂浓度为0.01M、St与MMA单体质量比为20:1、Fe3O4粉体材料含量为1.0g时，成功制备出了粒径均匀，分散性良好，粒径大小为160nm的Fe3O4/聚苯乙烯/甲基丙烯酸甲酯复合微球。最后，本文初步探索了Fe3O4/聚苯乙烯/甲基丙烯酸甲酯复合微球与急性心肌梗死（AMI）早期诊断指示物MYO抗体的连接，并采用了FT-IR和紫外分光光度法进行检测。实验结果表明，MYO抗体成功连接到了羧基化聚苯乙烯磁性微球表面，连接在复合微球表面的MYO抗体最佳浓度为1.3mg/mL。
[Abstract]:"Composite nanomaterials" refers to composite particles formed by two or more substances combined in some way at nanometer scale. Through the composite of many kinds of materials, the performance complementation and optimization can be realized, and the nanometer materials with excellent performance can be prepared. Organic-inorganic hybrid nanomaterials integrate the excellent properties of inorganic materials, organic materials and nanomaterials, and show broad application prospects in the fields of mechanics, heat, optics, electricity, biology and environmental protection. Due to the unique physical properties of polystyrene and its practical applications, especially in biological separation and detection, the research and application of polystyrene-inorganic nanocomposites are attracting more and more interest. The synthesis of organic-inorganic hybrid nanomaterials and magnetic nanocomposites was studied in this paper. This subject is carried out according to the following aspects: Firstly, the preparation of Fe _ 2O _ 3 / poly (pyrrolidone) with good morphology and dispersion was studied. The effects of the amount of Fe3O4, reaction time and reaction temperature on the formation of composite particles were studied. The synthesized products were characterized by TEMN XRDX FT-IR and VSM. The results showed that the composite particles of iron trioxide and polypyrrolidone with a particle size of 18.6nm were synthesized with good dispersion and superparamagnetism. Secondly, the synthesis and carboxylation modification of polystyrene magnetic microspheres were studied, including the synthesis of Fe3O4/ polystyrene, polystyrene / methyl methacrylate and Fe3O4/ polystyrene / methyl methacrylate composite microspheres, and the quantity of MMA was explored. Effects of emulsifier concentration and monomer concentration on composite microspheres. For the synthesis of polystyrene / polysilane, the effects of the volume ratio of polysilane and polysilane to styrene on the composite particles of polystyrene / polysilane were investigated. In emulsion polymerization, Fe3O4/ polystyrene / methyl methacrylate composite microspheres with uniform particle size, good dispersion and size of 160nm were successfully prepared when the mass ratio of emulsifier to MMA monomer was 20: 1, Fe _ 3O _ 4 was 1.0 g. Finally, the connection of Fe3O4/ polystyrene / methyl methacrylate composite microspheres with MYO antibody, an early diagnostic indicator of acute myocardial infarction (AMI), was preliminarily explored. FT-IR and UV spectrophotometry were used to detect the antibody. The results showed that the MYO antibody was successfully linked to the surface of carboxylated polystyrene magnetic microspheres, and the optimal concentration of MYO antibody attached to the composite microspheres was 1.3 mg / mL.
【学位授予单位】：东华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.1

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