Study of physical ageing in amorphous polymer by thermo-stimulated currents (TSC)

Author

Delbreilh, L. ; Bernès, A. ; Lacabanne, C.

Author_Institution

Inst. des Materiaux de Rouen, Rouen Univ., Saint Etienne du Rouvray, France

fYear

2005

fDate

11-14 Sept. 2005

Firstpage

491

Lastpage

494

Abstract

The physical ageing in amorphous polymer, polycarbonate, is studied by complementary techniques: thermally stimulated currents (TSC) and differential scanning calorimetry (DSC). The enthalpy relaxation is described by using the Tool, Narayanaswamy and Moynihan (TNM) phenomenological model where the relaxation time τ_H(T,T_f) depends both on temperature T _fand fictive temperature Tf characteristic of the glass structure. We have shown the structural dependence of enthalpy relaxation time give prominence to the compensation law observed in dielectric relaxation times.

Keywords

ageing; amorphous state; dielectric relaxation; differential scanning calorimetry; glass structure; polymers; thermally stimulated currents; DSC; TSC; ageing; amorphous polymer; dielectric relaxation; differential scanning calorimetry; enthalpy relaxation; glass structure; polycarbonate; thermostimulated currents; Aging; Amorphous materials; Calorimetry; Dielectric measurements; Glass; Heating; Instruments; Isothermal processes; Polymers; Temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 2005. ISE-12. 2005 12th International Symposium on

Print_ISBN

0-7803-9116-0

Type

conf

DOI

10.1109/ISE.2005.1612432

Filename

1612432