The present contribution reports a novel strategy to prepare polypropylene (PP)-based nanocomposites with highly dispersed noble metal nanoparticles (NPs), which includes the impregnation of a metal salt inside the porosity of PP reactor granule and subsequent in-situ generation of the NPs therein. Thus formed nanoparticles were confined and retained in the porosity, thus minimizing the sintering and leaching of the NPs during melt processing. The so-called reactor granule technology was applied to successfully prepare PP-based nanocomposites with Ag and Au NPs, and unique nonlinear optical properties and the antibacterial ability of the PP/Ag nanocomposites were demonstrated.

本文稿报告了一种制备具有高度分散的贵金属纳米颗粒（NPs）的基于聚丙烯（PP）的纳米复合材料的新策略，其中包括将金属盐浸渍在PP反应器颗粒的孔隙内，并随后原位生成NPs在其中。如此形成的纳米颗粒被限制并保留在孔隙中，从而使NPs在熔融加工期间的烧结和浸出最小化。应用所谓的反应器颗粒技术成功地制备了具有Ag和Au NP的PP基纳米复合材料，并证明了PP / Ag纳米复合材料独特的非线性光学性质和抗菌能力。