Abstract
Soft x-ray absorption spectra of oriented films of polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) of several tenth micron in thickness were measured by a transmission method. A similar resolution and the same dependence on the beam incident angle as obtained by a total electron yield method were observed in the oxygen K-edge region, but not in the carbon K-edge. IR spectra of the thin oriented sample films utilized in these measurements indicated their aromatic rings to be parallel to the film plane as found in the thick PET and PEN films. This fact conformed to the spectral change near the oxygen K-edge and gave a further support of the peak assignments made previously. The spectral behavior near the carbon K-edge was interpreted by the saturation effect which was due to the presence of greater number of carbon atoms in a repeat unit than oxygen atoms, and partially by strayed light effects.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
