Nano-indentation test of PA12 after radiation cross-linking

Abstract

This article describes the effect of radiation crosslinking on the nano-mechanical properties of polyamide 12. Crosslinking is a process in which polymer chains are associated through chemical bonds. These nano-mechanical properties were measured by the DSI (Depth Sensing Indentation) method on samples which were non-irradiated and irradiated by different doses of the β - radiation. The best results were achieved by the irradiation with doses of 132 kGy. The nano-mechanical properties (nano-hardness, elastic modulus, deformation work, creep) after irradiation was increased up to 67% compared to untreated material.