Dielektrische Spektroskopie zur Untersuchung der Glasdynamik im Nichtgleichgewicht (English shop)

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In this work, various glass formers were investigated by means of dielectric spectroscopy. On the one hand, broadband measurements were carried out on salol, xylitol and propylene glycol (PG) in a maximum frequency range between 10-2 and 2×1011 Hz. In addition, measurements of the ageing behaviour below the glass transition temperature TG were performed on the aforementioned substances as well as on glycerol, propylene carbonate (PC) and CKN ([Ca(NO3)2]0.4 [KNO3]0.6), or (where already available) evaluated using a new method. With this method, the structural relaxation time below the glass transition temperature could be determined directly from dielectric measurements.