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Self-Assembled Nanostructures of Block Copolymers on Random Copolymer Brush

机译:随机共聚物刷子上嵌段共聚物的自组装纳米结构

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We synthesized the polymer brushes by conventional free radical polymerization and investigated the morphology evolution of block copolymer nanostructure on the brush treated surfaces. Our simple approach utilized a functionalized free radical initiator to add hydroxyl group to a chain end and an excess amount of a chain transfer agent to control the molecular weights of the brushes. The synthesized polymer brushes had narrow molecular weight distribution as well as hydroxyl end group and were successfully grafted onto silicon oxide layer by simple spin-coating and annealing process. The orientation of poly(styrene-block-methyl methacrylate)s (PS-b-PMMAs) coated on the brush grafted surface was finely controlled by the surface modification by polymer brushes.
机译:通过常规的自由基聚合,通过常规的自由基聚合合成聚合物刷子,并研究了刷处理表面上嵌段共聚物纳米结构的形态演化。我们的简单方法利用官能化的自由基引发剂将羟基加入链端和过量的链转移剂以控制刷子的分子量。合成的聚合物刷具有窄的分子量分布以及羟基末端,通过简单的旋涂和退火工艺成功接枝到氧化硅层上。通过聚合物刷子的表面改性精细地控制涂覆在刷子接枝表面上的聚(苯乙烯 - 嵌段 - 甲基丙烯酸甲酯)S(PS-B-PMAMS)的取向。

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