Energy-filtered imaging of polymer microstructure
- Stevens Institute of Technology, Hoboken, NJ (United States)
- Oak Ridge National Lab., TN (United States)
Energy-filtered electron-spectroscopic TEM imaging provides a new way to study the microstructure of polymers without heavy-element stains. Since spectroscopic imaging exploits the signal generated directly by the electron-specimen interaction, it can produce richer and higher resolution data than possible with most staining methods. There are basically two ways to collect filtered images. Spectrum imaging (1) uses a focused probe that is digitally rastered across a specimen with an entire energy-loss spectrum collected at each x-y pixel to produce a 3-D data set. Alternatively, filtering schemes such as the Zeiss Omega filter and the Gatan Imaging Filter (GIF) acquire individual 2-D images with electrons of a defined range of energy loss ({delta}E) that typically is 5-20 eV. This paper presents results using spectrum imaging and a Gatan imaging filter (GIF) to study a melt-mixed polyethylene (PE)/polystyrene (PS) homopolymer blend.
- DOE Contract Number:
- AC05-96OR22464; AC05-76OR00033
- OSTI ID:
- 468778
- Report Number(s):
- CONF-960877--
- Country of Publication:
- United States
- Language:
- English
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