Preparation and properties of polyurethane/functionalized multi-walled carbon nanotubes rigid
foam nanocomposites (in English)
Polimery 2014, No 11-12, 776
Surface modification of hydroxylated, multi-walled carbon nanotubes (OH-MWCNTs) was carried out by silanization with 3-aminopropyltriethoxysilane (APTS). Rigid polyurethane foam nanocomposites were prepared by silanized MWCNTs in different weight percents via a one shot method and the thermal, mechanical and morphological properties of the nanocomposites were investigated in detail. The obtained results from thermogravimetric analysis indicated that the thermal stability of the nanocomposites were increased by higher silanized MWCNTs contents. Morphological studies showed an increased cell density parallel to higher silanized MWCNTs contents in the polyurethane matrix. Furthermore, the tensile properties showed that the Young's moduli, as well as tensile strengths, were improved in comparison with pristine foam. The obtained data revealed reverse effects of 3 % functionalized MWCNT on the properties of respective nanocomposites due to agglomeration of MWCNTs.