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基于最近Chang等在嵌段共聚物聚异戊二烯-聚2-乙烯基吡啶(PI-b-P2VP)的四氢呋喃-乙醇共混溶剂体系制备环状胶束的工作(Angew.Chem.2009,48,4594),我们在此基础上,用原子力显微镜对该体系形成环状结构的影响因素包括嵌段共聚物浓度、混合溶剂配比、溶剂选择性、溶剂挥发速度、溶剂滴加顺序及选择性溶剂的滴加速度等进行了详细研究,发现P2VP的选择性溶剂的引入是形成环状结构的关键因素.利用P2VP与氯金酸的络合,分析环状结构,并进一步结合动、静态光散射及冷冻透射电镜对此形貌的形成机理进行探究.
Based on the recent work of Chang et al. On the preparation of cyclic micelles by the tetrahydrofuran-ethanol solvent system of block copolymer polyisoprene-poly (2-vinylpyridine) (PI-b-P2VP) 48,4594). Based on this, the factors affecting the formation of the ring structure by atomic force microscopy include the block copolymer concentration, the mixed solvent ratio, the solvent selectivity, the solvent evaporation rate, the solvent dropping order and the selection It is found that the introduction of P2VP selective solvent is the key factor to form the ring structure.Using the complexation between P2VP and chloroauric acid, the cyclic structure is analyzed and further combined with moving and static light Scattering and frozen transmission electron microscopy to explore the formation mechanism of this morphology.