Preparation and characterization of flexible polyurethane foam nanocomposites reinforced by magnetic core-shell Fe3O4@APTS nanoparticles

• Published in: Colloid and polymer science 2014-03, Vol.292 (3), p.627-633
• Main Authors: Alavi Nikje, Mir Mohammad, Tamaddoni Moghaddam, Sahebeh, Noruzian, Maede, Farahmand Nejad, Mohammad Amin, Shabani, Keyvan, Haghshenas, Moslem, Shakhesi, Saeed
• Format: Article
• Language: English
• Subjects: Applied sciences; Cellular; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Composites; Exact sciences and technology; Food Science; Forms of application and semi-finished materials; Nanotechnology and Microengineering; Original Contribution; Physical Chemistry; Polymer industry, paints, wood; Polymer Sciences; Soft and Granular Matter; Technology of polymers
• ISSN: 0303-402X; 1435-1536
• DOI: 10.1007/s00396-013-3099-2

Novel magnetic polyurethane flexible foam nanocomposites were synthesized by incorporation of aminopropyltriethoxysilane (APTS) functionalized magnetite nanoparticles (MNPs) via one-shot method. The functionalized MNPs (Fe 3 O 4 @APTS) were synthesized by co-precipitation of the Fe 2+ and Fe 3+ with NH 4 OH and further functionalization with APTS onto the surface of MNPs by sol–gel method. The magnetic core-shell NPs were used up to 3.0 % in the foam formulation and the magnetic nanocomposites prepared successfully. The results of thermogravimetric analysis (TGA) showed an increasing in thermal stability of polyurethane nanocomposite foam at initial, 5 and 10 %, and maximum thermal decomposition temperatures by incorporation of Fe 3 O 4 @APTS. In addition SEM images revealed the uniformity of the foam structures and decreasing in pore sizes. Furthermore, VSM result showed super paramagnetic behavior for Fe 3 O 4 @APTS-PU nanocomposites.