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.
Institute of Physics, Silesian University, Universytecka 4, 40-007 Katowice, Poland. mpaluch@us.edu.pl
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