Physical ageing influence on chains dynamic of polycarbonate by thermo-stimulated currents (TSC)

Author

Delbreilh, L. ; Bernes, Alain ; Lacabanne, C.

Author_Institution

Lab. Phys. des Polymeres, Univ. Paul Sabatier, Toulouse, France

Volume

1

fYear

2004

Firstpage

75

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 using the Tool, Narayanaswamy and Moynihan (TNM) phenomenological model where the relaxation time τ_H(T,T_f) depends both on temperature T and fictive temperature T_fcharacteristic 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; enthalpy; glass structure; polymers; thermally stimulated currents; Tool-Narayanaswamy-Moynihan phenomenological model; amorphous polymer; chains dynamic; dielectric relaxation times; differential scanning calorimetry; enthalpy relaxation; fictive temperature; glass structure; physical ageing influence; polycarbonate; structural dependence; thermally stimulated currents; Aging; Amorphous materials; Calorimetry; Dielectric measurements; Glass; Heating; Instruments; Polarization; Polymers; Temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics, 2004. ICSD 2004. Proceedings of the 2004 IEEE International Conference on

Print_ISBN

0-7803-8348-6

Type

conf

DOI

10.1109/ICSD.2004.1350293

Filename

1350293