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Temperature and pressure dependence of secondary process in an epoxy system
Year: 2011
Abstract:
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
Year: 2007
Abstract:
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 ...
Secondary dynamics in glass formers: relation with the structural process and the glass transition
Year: 2007
Abstract:
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 ...