High Loading of SiO₂ Nanoparticles to Investigate Optical and Mechanical Properties of Polyurethane Open Cell

Abstract:

In this research the composition of polyurethane open cell (PUOC) with two concentrations of SiO₂ nanoparticles (1 and 2wt. %) have been prepared. Optical microscopy imaging, watering uptake, FTIR and Raman spectroscopy of the synthesized samples were measured. The optical microscopy imaging of samples showed differences in the appearance of matrix by applying of different amount of SiO₂ nanoparticles. Variations of the water uptake of specimens were related to the function of SiO₂ nanoparticles (NPs) and their concentrations. The degree of phase separation and the hydrogen bonding index in samples were evaluated in terms of their FTIR spectroscopy data. The apparent and real densities of foams were measured and then total porosity, open porosity and close porosity of samples were calculated. According to creating voids in polyurethane, the apparent and real density has different behavior by adding of SiO₂ nanoparticles (NPs). The open porosity of samples is increased by adding the amount of nanoparticles but the close and total porosity are decreased.

• Periodical: Advanced Materials Research (Volume 829)
• Pages: 30-35
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.829.30
• Online since: November 2013
• Authors: Marzieh Nadafan, Rasoul Malekfar*, Ali Izadi-Darbandi, Zahra Dehghani
• Keywords: FTIR Spectroscopy, Polyurethane Open Cell, Porosity, Raman Spectroscopy, SiO₂ Nanoparticle

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