I am testing polymer composites via DMA. Could please any one help?
Victor H and Ebrhim thank you for your comment , please find attached thermograph
Besides the great explanation of Ebrahim Jalali Dil, viscous modulus is translated "as a rule of thumb" as the plastic phase, meanwhile the elastic modulus is translated as the "elastic phase". I have seen at your file that you have only the Storage Modulus (Elastic Modulus). As the temperature increases, the energy release (Dampening) happens for each sample. It's up to you to decide if the dampening maximum is more convenient at higher or lower temperatures. Good Luck!!
Increasing the height of tanδ peak represents higher damping for the nanocomposites.
I have impressed by Ebrahim 's answer . So lucid explanation. I had doubts on tan delta curve but today cleared.
Thanks ResearchGate & Ebrahim.
Please see my attached paper about the tan delta peak height in particle-reinforced polymers. The stiffer the rubbery modulus, the lower the peak height due to general viscoelastic effect. The loss modulus peak (E" or G") should be used for discussion of glass transition behavior not the tan delta peak. I hope this is helpful (although I realize that my answer is very late because I just found this question accidentally now). Best, Chris
Hi Basheer,
from in the graph you attached the tandelta behavior for PE and its nano-composites is quite strange at those temperatures.
Can you supply the graph with both the storage modulus and tan delta?
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