磁性纳米粒子在聚苯乙烯-b-聚甲基丙烯酸正丁酯嵌段共聚物层状膜中的嵌入：链端基对纳米结构的影响
Incorporation of magnetic nanoparticles into lamellar polystyrene-b-poly(n-butyl methacrylate) diblock copolymer films: influence of the chain end-groups on nanostructuration
摘要：
在这篇文章中，我们提出了新的样品的层状磁性纳米复合材料的基础上的自组装的聚苯乙烯-b-聚（甲基丙烯酸正丁酯）二嵌段共聚物通过原子转移自由基聚合合成。聚合物膜上负载有磁性氧化铁纳米颗粒，通过表面引发ATRP生长聚苯乙烯链。用原子力显微镜、椭圆偏振仪、中子反射率和接触角测量研究了硅上纯的和磁负载的共聚物膜的纳米结构。本研究突出了强烈的影响力的共聚物末端-驱动本身的选择的ATRP化学路线-的顺序上的多层膜中的块的重复序列。此外，纳米颗粒的尺寸的较窄的分布被检查作为SI-ATRP反应的控制参数。
英文摘要：
In this article, we present new samples of lamellar magnetic nanocomposites based on the self-assembly of a polystyrene-b-poly(n-butyl methacrylate) diblock copolymer synthesized by atom transfer radical polymerization. The polymer films were loaded with magnetic iron oxide nanoparticles covered with polystyrene chains grown by surface initiated-ATRP. The nanostructuration of the pure and magnetically loaded copolymer films on silicon was studied by atomic force microscopy, ellipsometry, neutron reflectivity and contact angle measurement. The present study highlights the strong influence of the copolymer extremity - driven itself by the choice of the ATRP chemical route - on the order of the repetition sequences of the blocks in the multi-lamellar films. In addition, a narrower distribution of the nanoparticles' sizes was examined as a control parameter of the SI-ATRP reaction.
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