Assessment of nanoparticle loading and dispersion in polymeric materials using oscillatory photon correlation spectroscopy |
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| Institution: | 1. Poznań University of Techenology, Institute of Chemical Technology and Engineering, ul. Berdychowo 4, Poznań, Poland;2. Poznań University of Technology, Institute of Chemistry and Technical Electrochemistry, ul. Berdychowo 4, Poznań, Poland;3. Poznań University of Technology, Institute of Materials Research and Quantum Engineering, ul. Berdychowo 4, Poznań, Poland;4. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University, Odbojarov 10, 83232 Bratislava, Slovakia;5. Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, Kalinčiakova 8, 83232 Bratislava, Slovakia;1. Institute of Continuum Mechanics and Material Mechanics, Hamburg University of Technology, Eißendorfer Str. 42, 21073 Hamburg, Germany;2. Institute of Materials Research, Materials Mechanics, Helmholtz-Zentrum Geesthacht, Max-Planck Straße 1, 21502 Geesthacht, Germany |
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| Abstract: | The inclusion of small concentrations of nanoparticles in polymeric materials (≤5 wt. %) can significantly enhance material properties and functionality. However, poor or non-uniform particle dispersion resulting in particle clustering (agglomeration) in polymer nanocomposites (PNCs) limits the potential for property enhancement in these materials. Achieving good dispersion is considered essential for successful commercialization of PNCs. Hence, reliable and accurate measurement techniques for characterizing particle loading and dispersion would significantly contribute towards understanding and optimizing the material performance of PNCs, and consequently play a pivotal role in product development. This paper, the last of three papers on optical techniques, presents the results of a study using a dynamic light scattering technique, oscillatory photon correlation spectroscopy (Os-PCS), for discriminating between different particle loadings and levels of dispersion. The technique has been applied to two epoxy-based resin systems reinforced with either nanoclay platelets or silica microspheres. |
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| Keywords: | Dispersion Nanoparticles Optical characterisation Particle loading Polymer nanocomposites |
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