科研之友
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摘要
Results of broadband dielectric spectroscopy and rheological studies of poly(propylene glycol) + SiO2 nanocomposites are presented. They show that the dynamics in high-concentrated composites is dominated by confinement and adsorption effects. The most notable finding is the impact of nanoparticles on fragility, the fractional translational - orientational decoupling and the shift of dynamics towards the pure Vogel-Fulcher-Tanunann pattern, associated with the lack of local symmetry preferences.
- 出版日期2017-9-1
