Cyanate Ester Resin/Silica subnanocomposites and their superiority over nanocomposites due to fundamental role of constrained interfacial dynamics

• Published in: Journal of physics. Conference series Vol. 2103; no. 1; pp. 12100 - 12105
• Main Authors: Bershtein, V A, Fainleib, A M, Kirilenko, D A, Yakushev, P N
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.11.2021
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/2103/1/012100

Abstract The study of nanostructure, thermal and relaxation properties (by HAADF-STEM, EDXS, DMA and DSC), combined with the calculations of interparticle distances and interfacial areas, has been performed for a series of the hybrid Cyanate Ester Resin (CER)/Si0 2 polymer composites with 0.01 to 10 wt.% Si0 2 units introduced via a sol-gel process. The absence of clusterization, arising only subnanometric Si0 2 nodes and their quasi-regular distribution within the amorphous matrix, with the shortest distances between nodes, provided their exceptional positive impact on the matrix properties at ultra-low Si0 2 contents of 0.03-0.1 wt.%. The superiority of these subnanocomposites over the nanocomposites was determined by the role of constrained interfacial dynamics over the whole matrix.