One important application of DMA is measurement of the of polymers. Amorphous polymers have different glass transition temperatures, above which the material will have properties instead of glassy behavior and the stiffness of the material will drop dramatically along with a reduction in its viscosity. At the glass transition, the storage modulus decreases dramatically and the loss modulus reaches a maximum. Temperature-sweeping DMA is often used to characterize the g. As temperature increases, the storage modulus typically decreases, while the loss modulus and damping factor increase. This is because higher temperatures provide more energy for molecular motion, leading to increased viscous behavior.
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