The Study of Surface Accumulated Silica Nanoparticles from “Weathered” Polymer Nanocomposites Using ICP-OES

S.A. Rabb, D. Stanley, L. Sung, T. Nguyen, L.L. Yu
National Institute of Standards and Technology, US

Keywords: silica nanoparticles, nanocomposites, release

Summary:

The impact of nanoparticles on the environment and, more importantly, the human population has been of great interest for the past few years. Release of these nanoparticles from different materials from wear or climate exposure has been explored to aid in the assessment of risk to the ecosystem. In our studies, the release and surface accumulation of silica nanoparticles on polymer nanocomposites due to weathering under controlled conditions (i.e. humidity, temperature, and UV radiation) has been investigated. Inductively coupled plasma-optical emission spectrometry (ICP-OES) is one of the techniques utilized to ascertain the nanosilica surface accumulation.