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Redox two-component initiated free radical and cationic polymerizations: Concepts, reactions and applications
Progress in Polymer Science ( IF 27.1 ) Pub Date : 2019-05-04 , DOI: 10.1016/j.progpolymsci.2019.04.003
Patxi Garra , Céline Dietlin , Fabrice Morlet-Savary , Frédéric Dumur , Didier Gigmes , Jean-Pierre Fouassier , Jacques Lalevée

Redox polymerizations are of huge importance throughout academic and industrial polymer science. Many authors propose the reaction of reducing (Red) and oxidizing (Ox) agents to accelerate/initiate radical or cationic polymerizations. As a result of activation energies typically below 80 kJ/mol, such reactions can occur under mild conditions, e.g., at room temperature, with reduced energy consumptions and robust in applications, such as the fabrication of composites. However, a clear definition of redox polymerization can only be found in reviews dealing with redox free radical polymerizations (FRP) published twenty years ago (or more). Therefore, a fresh and broader update is provided here for more recent work. The concepts involved when the "Red" and "Ox" agents (constituting the redox initiating system) are mixed under mild conditions are presented, followed by a discussion of the redox FRP initiating systems in bulk. Initiating systems dealing with the redox cationic polymerization (CP) are reviewed, and parallels between conventional FRP/CP and controlled polymerizations, in which redox systems are used, is provided. Many redox agents are useful in both modes. Finally, dual-cure (redox/photochemical; redox dual FRP/CP) systems is presented and selected applications are reviewed. Altogether, the state of the art for redox two-component polymerizations is provided, along with some perspectives.



中文翻译:

氧化还原两组分引发的自由基和阳离子聚合:概念,反应和应用

氧化还原聚合在整个学术和工业聚合物科学中都具有极其重要的意义。许多作者提出了还原剂(Red)和氧化剂(Ox)的反应,以加速/引发自由基或阳离子聚合反应。由于活化能通常低于80 kJ / mol,因此此类反应可在温和条件下发生,例如在室温下具有较低的能耗,并且在诸如复合材料的制造等应用中具有强大的性能。但是,只有在20年前(或更长)发表的有关氧化还原自由基聚合(FRP)的评论中才能找到对氧化还原聚合的明确定义。因此,此处为更新的工作提供了一个新的,更广泛的更新。介绍了在温和条件下混合“ Red”和“ Ox”试剂(构成氧化还原引发体系)时涉及的概念,然后讨论了大量的氧化还原FRP引发体系。审查了处理氧化还原阳离子聚合(CP)的引发体系,并提供了常规FRP / CP与使用氧化还原体系的受控聚合之间的相似之处。许多氧化还原剂在两种模式下都有用。最后,介绍了双重固化(氧化还原/光化学;氧化还原双重FRP / CP)系统,并审查了选定的应用。总体上,提供了氧化还原两组分聚合的现有技术以及一些观点。

更新日期:2019-05-04
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