An innovative route based on a novel photo-latent ROMP initiator has been explored to synthesize polynorbornene latex particles in miniemulsion. Operation conditions were strongly improved by the use of an annular LED photo-reactor, increasing the uniformity of radiation distribution and enabling to control atmosphere and stirring throughout irradiation. Several parameters (droplet size, irradiance, pre-catalyst structure) were studied in order to improve the monomer conversion profiles, which eventually led to the production of latex with high norbornene conversion (>90%) and 10% solids content. Particular attention was paid to the polymer microstructure, which was found to be highly dependent on the type of initiation mechanism.

已探索出一种基于新型光潜能ROMP引发剂的创新路线，以在细乳液中合成聚降冰片烯胶乳颗粒。通过使用环形LED光反应器，大大改善了操作条件，增加了辐射分布的均匀性，并能够在整个辐射过程中控制气氛和搅拌。为了改善单体转化率，研究了几个参数（液滴大小，辐照度，催化剂前结构），最终导致生产出高降冰片烯转化率（> 90％）和固含量为10％的胶乳。特别注意了聚合物的微观结构，发现其高度依赖于引发机理的类型。