Journal of Chemical Physics, Vol.120, No.4, 2020-2025, 2004
Effect of pressure on dynamic heterogeneity in dendrimeric alkyd resin
Broadband dielectric spectroscopy is employed to investigate the non-Debye relaxation behavior in a dendrimeric alkyd resin. From temperature-dependent measurements at ambient pressure, we found a very broad distribution of relaxation times. This is attributed to the complex geometrical topology of the molecule. However, compression significantly reduces the non-Debye character of the dielectric response; thus, pressure induces dynamic homogeneity in the dendrimeric alkyd resin. (C) 2004 American Institute of Physics.