Abstract In this paper, we present a tandem anionic-radical approach for synthesizing hypergrafted polymers. We prepared 4-(N,N-diphenylamino)methylstyrene (DPAMS) as a new radical-based inimer. Linear PDPAMS was prepared through anionic polymerization. Hypergrafted PDPAMS was synthesized through the self-condensing vinyl polymerization of DPAMS with linear PDPAMS. The linear backbone of PDPAMS, which incorporated latent radical initiating sites, served as a ‘hyperlinker’ to link hyperbranched side chains. The molecular weights of hypergrafted polymers increased as the length of the linear backbone chain increased. The hypergrafted structure of the resulting polymer was confirmed using a conventional gel permeation chromatograph apparatus equipped with a multiangle light scattering detector, nuclear magnetic resonance, differential scanning calorimetry, and thermogravimetric analysis. This strategy can be applied to synthesize other complex architectures based on hyperbranched polymers by changing the structure of a polymer backbone through anionic polymerization.

中文翻译：

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自由基-异构体串联阴离子-自由基聚合合成超接枝聚[4-(N,N-二苯基氨基)甲基苯乙烯]

摘要 在本文中，我们提出了一种用于合成超接枝聚合物的串联阴离子自由基方法。我们制备了 4-(N,N-二苯基氨基) 甲基苯乙烯 (DPAMS) 作为一种新的基于自由基的 inimer。通过阴离子聚合制备线性PDPAMS。超接枝 PDPAMS 是通过 DPAMS 与线性 PDPAMS 的自缩合乙烯基聚合合成的。PDPAMS 的线性主链结合了潜在的自由基引发位点，作为连接超支化侧链的“超链接器”。超接枝聚合物的分子量随着线性主链长度的增加而增加。使用配备多角度光散射检测器、核磁共振、差示扫描量热法和热重分析。通过阴离子聚合改变聚合物主链的结构，该策略可用于合成基于超支化聚合物的其他复杂结构。