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|Title:||Analyzing morphology and thermal history of polybutylene terephthalate by THz time-domain spectroscopy|
|Citation:||Journal of Infrared, Millimeter and Terehertz Waves, 2011; 32(7):952-959|
|Steffen Wietzke, Marco Reuter, Nikolaus Nestle, Evgueni Klimov, Uri Zadok, Bernd M. Fischer and Martin Koch|
|Abstract:||We have measured the frequency-dependent dielectric function of semicrystalline polybutylene terephthalate (PBT) in the terahertz region between 100 GHz and approximately 2.8 THz. A characteristic band is observed around 2.38 THz. The intensity of this band is a good indicator of the degree of crystallinity of the different samples. A potential assignment of this band is proposed,based on the comparison with spectroscopic data of the structurally very similar polyethylene terephtalate (PET). Furthermore, the frequency-dependent index of refraction of PBT reveals more insight about the morphology and different thermal history of the samples under investigation.|
|Keywords:||Terahertz time-domain spectroscopy; polybutylene terephthalate; PBT; degree of crystallinity; morphology; structure; macromolecule; index of refraction; refractive index; absorption coefficient; thermal history; amorphous domains; semi-crystalline polymer; non-destructive; analysis|
|Rights:||© Springer Science+Business Media, LLC 2011|
|Appears in Collections:||Electrical and Electronic Engineering publications|
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