A novel synthetic strategy for the synthesis of graft copolymers is reported. Block copolymers containing segments with stable nitroxyl radicals side groups were first prepared by anionic polymerization, which were then used as a precursor for the subsequent nitroxide‐mediated radical polymerization (NMRP) of styrene. This way, block–graft copolymers with polystyrene side chains grafted from one of the blocks were successfully synthesized in a controlled manner. In addition, block–graft copolymers with grafted polystyrene chains and a poly(tert‐butyl methacrylate) block were subjected to hydrolysis to yield the corresponding amphiphilic polymers. The structures and the molecular weight characteristics of the polymers were characterized by spectral and chromatographic analyses. The surface morphology of thus obtained polymers was also investigated by microscopic techniques. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019

中文翻译：

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稳定的含自由基嵌段共聚物的复杂大分子结构

报道了一种用于接枝共聚物合成的新型合成策略。首先通过阴离子聚合制备包含带有稳定的硝氧基自由基侧基的链段的嵌段共聚物，然后将其用作苯乙烯的后续硝基氧介导的自由基聚合（NMRP）的前体。这样，以受控方式成功合成了嵌段共聚物，其中嵌段共聚物的聚苯乙烯侧链是从其中一个嵌段接枝而来的。此外，具有接枝聚苯乙烯链和聚叔丁基的嵌段接枝共聚物对甲基丙烯酸丁酯嵌段进行水解，得到相应的两亲性聚合物。通过光谱和色谱分析来表征聚合物的结构和分子量特征。还通过显微镜技术研究了如此获得的聚合物的表面形态。©2019 Wiley Periodicals，Inc.J.Polym。科学，A部分：Polym。化学 2019年