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Spectromicroscopy of Poly(ethylene terephthalate): Comparison of Spectra and Radiation Damage Rates in X-ray Absorption and Electron Energy Loss
 

Summary: Spectromicroscopy of Poly(ethylene terephthalate): Comparison of Spectra and Radiation
Damage Rates in X-ray Absorption and Electron Energy Loss
E. G. Rightor, A. P. Hitchcock,*, H. Ade, R. D. Leapman,| S. G. Urquhart, A. P. Smith,
G. Mitchell, D. Fischer,X H. J. Shin,O and T. Warwick#
Analytical Sciences, B-1470, Dow Chemical, Freeport, Texas 77541, Department of Chemistry, McMaster
UniVersity, Hamilton Ontario, Canada L8S 4M1, Department of Physics, North Carolina State UniVersity,
Raleigh, North Carolina 27695, National Institutes of Health, BEIP, NCRR, Bethesda, Maryland 20892,
Analytical Sciences Bldg. 1897, Dow Chemical, Midland, Michigan 48667, Material Science and
Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899,
Pohang Light Source, Pohang, Korea, amd AdVanced Light Source, Lawrence Berkeley National Lab,
Berkeley, California 91420
ReceiVed: July 26, 1996; In Final Form: NoVember 11, 1996X
The C 1s and O 1s X-ray absorption spectra of poly(ethylene terephthalate) (PET) have been recorded using
transmission, fluorescence, and electron yield detection. The corresponding electron energy loss spectra (EELS)
have been recorded in a scanning transmission electron microscope. These results are compared to the C 1s
and O 1s spectra of gas phase 1,4-dimethyl terephthalate (the monomer of PET) recorded using EELS. The
comparison of monomer and polymer materials in different phases and with different techniques has aided
the understanding of the relative strengths and limitations of each technique as well as assisting the spectral
interpretation. Good agreement is found in the overall shape and the energies of the spectral features.
Relatively minor differences in intensities can be understood in terms of the properties of the individual

  

Source: Ade, Harald W.- Department of Physics, North Carolina State University

 

Collections: Physics