Author/Authors :
Bershtein، نويسنده , , Vladimir and Karabanova، نويسنده , , Lyudmyla and Sukhanova، نويسنده , , Tatiana and Yakushev، نويسنده , , Pavel and Egorova، نويسنده , , Larisa and Lutsyk، نويسنده , , Elena and Svyatyna، نويسنده , , Anna and Vylegzhanina، نويسنده , , Milana، نويسنده ,
Abstract :
Polyurethane–poly(2-hydroxyethyl methacrylate)-3-D nanodiamond (PU–PHEMA–ND) composites were studied using combined CRS/DSC/AFM approach. The peculiar behavior and the pronounced heterogeneity of their glass transition dynamics were revealed. Two opposite tendencies for changing dynamics by 3-D NDs, with prevailing sharp suppression of motions, and three-fold increasing elastic properties were shown. Maximal effects were found at minimal ND content of 0.25 wt%. This was associated, besides the improved dispersion/spatial distribution of NDs, with formation of thoroughly cross-linked nanocomposite network, due to the double hybridization resulting in a low rheological percolation threshold and the synergistic effect in dynamics.
