The phase diagram of the binary system poly(3-octylthiophene) 1 poly(ethylene-co-vinylacetate), P3OT 1 EVA was studied by Differential Scanning Calorimetry (DSC). The blends of low and high content of P3OT were found to be homogeneous. The system was also studied by a dielectric relaxation technique in the frequency range 20 Hz–100 kHz. The complex electric modulus M* is discussed in terms of the well-known Havriliak–Negami function. We also obtained the spectrum of relaxation times using a regularization technique. The spectra allowed us to calculate the d.c. conductivity. A low frequency contribution to the dielectric loss found in two-phase samples was attributed to interface polarisation effects.
Посилання на статтю:
Calorimetric and dielectric study of a blend containing a conductive polymer: poly(3-octylthiophene) 1 poly(ethylene-co-vinylacetate) / Miguel A. Monedero, Gustavo S. Luengo, Susana Moreno, Francisco Ortega, Ramón G. Rubio, Margarita G. Prolongo, Rosa M. Masegosa // Polymer. – 1999. – N 40. – P. 5833–5842.