Karpinska Jolanta, Lewis David, Sibbens Goedele, Aregbe Yetunde
European Commission, Joint Research Centre (JRC), Directorate G-Nuclear Safety & Security, Unit G.II.5-Nuclear Data and Measurement Standards, Retieseweg 111, Geel 2440, Belgium.
ACS Omega. 2024 Aug 5;9(33):35348-35355. doi: 10.1021/acsomega.4c00840. eCollection 2024 Aug 20.
Thin and conductive plastic foils are of great interest to the target preparation and nuclear physics communities as a backing support for neutron-induced reaction measurements. This paper describes the preparation and characterization of thin, freestanding conductive polyimide films with an areal density suitable for target preparation in nuclear chemistry applications. The films were fabricated by blending a variety of graphene-based nanoparticles, a custom-made graphene suspension, and carbon nanotubes within a polymer matrix. The fabrication of freestanding polyimide films with an areal density of 30 μg/cm (∼210 nm) was both time-consuming and difficult. Here, a novel approach is described that employs a sacrificial layer and graphene material to make thin (pure and conductive) polyimide foils readily available within 24 h.
薄的导电塑料箔作为中子诱发反应测量的背衬支持物，受到靶材制备和核物理领域的广泛关注。本文描述了具有适合核化学应用中靶材制备的面密度的独立式薄导电聚酰亚胺薄膜的制备和表征。这些薄膜是通过在聚合物基体中混合多种基于石墨烯的纳米颗粒、定制的石墨烯悬浮液和碳纳米管制成的。制备面密度为30 μg/cm（约210 nm）的独立式聚酰亚胺薄膜既耗时又困难。在此，描述了一种新颖的方法，该方法采用牺牲层和石墨烯材料，可在24小时内轻松制备出薄的（纯的和导电的）聚酰亚胺箔。
