论文部分内容阅读
采用氯仿作为铺展溶剂,将嵌段共聚物聚苯乙烯-聚(4-乙烯基吡啶)(PS-b-P4VP)稀溶液铺展于空气与水界面上,利用Langmuir-Blodgett(LB)膜技术转移至固体基底.研究了不同的嵌段比、表面压和小分子1-芘丁酸(PBA)的加入对嵌段共聚物气液界面聚集组装的影响.研究发现随着亲水段(P4VP)的增加,聚集组装结构由纳米片状、带状转变成纳米条状、纳米点状结构.表面压对纯PS-b-P4VP聚集组装产生影响,表面压增大,组装体排列紧密;随着表面压的继续增大,单层聚集结构遭到破坏,发生堆叠.加入PBA小分子后,PBA与PS-b-P4VP形成氢键,形态发生明显变化,原来的片状结构转变为条状或点状结构.
A dilute solution of the block copolymer polystyrene-poly (4-vinylpyridine) (PS-b-P4VP) was spread on the air-water interface using chloroform as a spreading solvent and transferred using a Langmuir-Blodgett (PBA) on the aggregation and assembly of the block copolymer at the gas-liquid interface were studied.The results showed that with the increase of P4VP, , The nanosheet-like and ribbon-like nanostructured nanostructures were assembled and assembled.The surface pressure increased the aggregation and assembly of pure PS-b-P4VP, and the surface pressure increased and the assemblies were arranged closely. Surface pressure continued to increase, monolayer aggregation structure was destroyed, stacking.With PBA small molecules, PBA and PS-b-P4VP formed hydrogen bonds, the morphology changed significantly, the original sheet structure into a strip or Dot structure.