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EnglishMeasurements of the surface self-diffusion coefficients of glass-forming small molecules, indomethacin (IMC), nifedipine (NIF),2 and o-terphenyl (OTP),3 by Yu and coworkers using the method of surface grating decay have found exceedingly large enhancement of molecular mobility at the surface. The decay of surface grating in all three molecules occurs by viscous flow at high temperatures, but by surface diffusion at lower temperatures starting at about 10 deg above Tg.
| Autori interni: | |
| Autori: | Ngai, K. L; Capaccioli, Simone |
| Titolo: | Surface diffusion of polymer glasses redux |
| Anno del prodotto: | 2016 |
| Abstract: | Measurements of the surface self-diffusion coefficients of glass-forming small molecules, indomethacin (IMC), nifedipine (NIF),2 and o-terphenyl (OTP),3 by Yu and coworkers using the method of surface grating decay have found exceedingly large enhancement of molecular mobility at the surface. The decay of surface grating in all three molecules occurs by viscous flow at high temperatures, but by surface diffusion at lower temperatures starting at about 10 deg above Tg. |
| Digital Object Identifier (DOI): | 10.1021/acs.macromol.6b01098 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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