Many applications of polymer materials, such as adhesives, require a polymerization process at room temperature and ambient atmosphere. In those cases, two-component (2K) systems based on redox initiation truly stand out due to their reliable performance. Herein, we present a deep insight into the polymerization kinetics of a newly developed initiation system based on the copper catalyzed cleavage of diborane compounds, followed by rheology coupled with NIR. The analysis of different diboranes led us to further investigate the diborane concentration dependency and the effects on gel time that can be observed. Furthermore, it is shown that the diborane/Cu system yields polymers with high molecular weight at high double bond conversions. In addition, the perspectives of diborane/Cu initiation for radical polymerization are presented, as various different monomer classes showed excellent reactivity towards polymerization, enabling the great potential of this initiation system for various applications in polymer chemistry.

中文翻译：

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深入了解基于铜催化乙硼烷裂解的 2K 自由基聚合体系的本体动力学及其前景


聚合物材料（如胶粘剂）的许多应用都需要在室温和环境气氛下进行聚合过程。在这些情况下，基于氧化还原引发的双组分 （2K） 系统因其可靠的性能而真正脱颖而出。在本文中，我们深入了解了新开发的基于铜催化裂解乙硼烷化合物的引发系统的聚合动力学，然后流变学与 NIR 耦合。对不同乙硼烷的分析使我们进一步研究了可以观察到的乙硼烷浓度依赖性以及对凝胶时间的影响。此外，结果表明，乙硼烷/铜系统在高双键转化率下产生高分子量的聚合物。此外，还提出了乙硼烷/铜引发自由基聚合的观点，因为各种不同的单体类别对聚合表现出优异的反应性，使该引发系统在聚合物化学中的各种应用具有巨大潜力。