Abstract
Soft and flexible chains of poly(tetramethylene glycol) (PTMG) were covalently grafted with multi-walled carbon nanotubes (MWCNT). FE-SEM images showed that the polyether PTMG formed a surrounding shell around the nanotubes with about 5 nm in thickness. The modified nanotubes (MWCNT-PTMG) were then loaded into an in situ prepared polyurethane elastomer (PUE) with different loading contents below 1 wt %. In addition to the modifier of MWCNT, polyether PTMG was also used for preparing the polyurethane matrix. Thermal analyses (TG/DTG and DTA) showed two endothermic phase transitions in associated with the two main thermo-degradations of the resulting PUE nanocomposites. Moreover, DMA technique exhibited an appreciable increase in the T g values due to a strong interaction between PTMG-modified MWCNT and PTMG-based PUE matrix.
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Behniafar, H., Yazdi, M. PTMG-Modified MWCNT/PTMG-based polyurethane nanocomposites: Strong interaction and homogeneous dispersion. Polym. Sci. Ser. B 58, 736–744 (2016). https://doi.org/10.1134/S1560090416060038
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DOI: https://doi.org/10.1134/S1560090416060038