Relaxation processes in non-crystaline materials
Provider: Grantová agentura ČR
Programme: Postdoktorské projekty (řešení od 1.1. 2010)
Implementation period: 01.01.10 - 31.12.12
Workplace:
Fakulta chemicko-technologická - Katedra fyzikální chemie
Investigator: Svoboda Roman
Description:
Main objective of the introduced post-doctoral project is a systematic study of enthalpy and volume structural relaxation of non-crystalline materials (particularly chalcogenide glasses and polymers/polymer blends) by using the techniques of conventional and temperature modulated DSC, mercury dilatometry and TMA. Emphasis will be given especially on finding and studying the relationships between the parameters of relaxation models and the structure of chosen non-crystalline materials. Collecting of a large amount of relaxation data measured by a single laboratory for various compositional lines within a couple of systems promises an opportunity of a generalized view upon the relaxation parameters varying with structural changes. At the same time the project aims for verifying of certain recently found relations between the enthalpy and volume relaxation as well as for the verification of applicability of certain non-fitting methods (inflectional analysis, peak-shift method, dependence of Tg on cooling rate) for the estimation of apparent activation energy of structural relaxation.
Main objective of the introduced post-doctoral project is a systematic study of enthalpy and volume structural relaxation of non-crystalline materials (particularly chalcogenide glasses and polymers/polymer blends) by using the techniques of conventional and temperature modulated DSC, mercury dilatometry and TMA. Emphasis will be given especially on finding and studying the relationships between the parameters of relaxation models and the structure of chosen non-crystalline materials. Collecting of a large amount of relaxation data measured by a single laboratory for various compositional lines within a couple of systems promises an opportunity of a generalized view upon the relaxation parameters varying with structural changes. At the same time the project aims for verifying of certain recently found relations between the enthalpy and volume relaxation as well as for the verification of applicability of certain non-fitting methods (inflectional analysis, peak-shift method, dependence of Tg on cooling rate) for the estimation of apparent activation energy of structural relaxation.
