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RISTemperature and pressure dependence of secondary process in an epoxy system
Dielectric spectroscopy as a function of temperature and pressure was used to study the secondary relaxation in poly [(phenyl glycidyl ether)-co-formaldehyde] at hydrostatic pressure up to 600 MPa and at different temperatures ...
Effect of temperature and pressure on the stractural (a-) and the true Johari-Goldstein (b-) relaxation in binary mixtures
We investigated the microscopic origin of the excess wing through isothermal and isobaric dielectric relaxation measurements for the Quinaldine/tristyrene mixture. Our results show that the excess wing, characteristic of ...
Relationship between structural and secondary relaxation in glass formers: Ratio between glass transition temperature and activation energy
The relationship between structural and secondary dynamics is one of the most recently considered and possibly important issues of the dynamics in glass formers. One relation of interest is the ratio between the activation ...
Secondary dynamics in glass formers: relation with the structural process and the glass transition
In this paper, we study secondary relaxations in a neat glass former close and below the glass transition. The pressure and temperature dependences of the characteristic relaxation frequencies were investigated to find a ...
Effect of thermodynamic history on secondary relaxation in the glassy state
We investigated by dielectric spectroscopy the effect that the thermodynamic history of a glass has on the secondary relaxation process. In particular we focused our attention to glassy states at the same conditions of ...