Hi,
I'm trying to analyse DMTA results and, in the process describe the definition of tan delta and what the width of the tan delta peak represents.
My polybutadiene samples have been artifically aged and shown a decrease in Tg (tan delta peak), a broadening of (85%max) tan delta peak width amd a rightward shift on the temperature axis.
Does anyone have ny ideas how this could be explained and definitions of the changes described?
Thanks in advance