Authors Nagel, J. ; Kroschwald, F. ; Bellmann, C. ; Schwarz, S. ; Janke, A. ; Heinrich, G.
Title Immobilisation of different surface-modified silica nanoparticles on polymer surfaces via melt processing
Date 05.11.2017
Number 52846
Abstract The immobilisation of silica nanoparticles on the surface of a flowing polymer melt is studied during injection moulding. We use silica nanoparticles of identical size of about 200 nm, but with different surface functionalities: plain unmodified particles with silanole groups as well as amino- and hydrocarbon modified particles. The particles were brought in contact with a polycarbonate melt at a temperature of 300 °C. In our investigation, we show that particles with polar surfaces are more embedded than those with non-polar surfaces. Immobilised polar particles exhibited also a higher adhesion, tested with an adhesive tape, whereas the non-polar particles can be easily removed by peeling off the adhesive tape. This paper reveals that surface properties have a larger influence on embedding of nanoparticles than thermal conditions due to cooling of the melt.
Publisher Colloids and Surfaces A: Physicochemical and Engineering Aspects
Citation Colloids and Surfaces A: Physicochemical and Engineering Aspects 532 (2017) 208-212
Tags nanoparticles nanotechnology surfaces injection moulding

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