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X-Ray Microscopy Analysis of the Morphology of Poly(Ethylene Terephthalate)/Vectra Blends Produced by Mechanical Alloying

Published online by Cambridge University Press:  02 July 2020

A. P. Smith ,
C. Bai ,
H. Ade ,
R. J. Spontak ,
C. M. Balik ,
C. C. Koch  and
C. K. Saw
A. P. Smith
Affiliation:
Departments of Materials Science and Engineering and Physics, North Carolina State University, Raleigh, NC, 27695
C. Bai
Affiliation:
Departments of Materials Science and Engineering and Physics, North Carolina State University, Raleigh, NC, 27695
H. Ade
Affiliation:
Physics, North Carolina State University, Raleigh, NC, 27695
R. J. Spontak
Affiliation:
Departments of Materials Science and Engineering and Physics, North Carolina State University, Raleigh, NC, 27695
C. M. Balik
Affiliation:
Departments of Materials Science and Engineering and Physics, North Carolina State University, Raleigh, NC, 27695
C. C. Koch
Affiliation:
Departments of Materials Science and Engineering and Physics, North Carolina State University, Raleigh, NC, 27695
C. K. Saw
Affiliation:
Corporate Research Division, Hoechst-Celanese Corporation, Summit, NJ, 07901
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Extract

The intimate blending of two incompatible polymeric materials constitutes one of the most important fields of study in polymer science. A vast arsenal of techniques, ranging from copolymerization to melt-blending, has been assembled to mix intrinsically immiscible polymers and optimize the physical properties of the resultant system. For some systems, however, even established techniques cannot produce useable blends. To overcome this limitation, non-equilibrium mechanical alloying (high-energy ball milling of two or more dissimilar powders) has been employed to produce blends of poly(ethylene terephthalate) (PET) and Vectra (73/27 oxybenzoate/oxynaphthoate). Characterization of these blends by TEM is confounded by the absence of a preferential staining agent, in which case Scanning Transmission X-ray Microscopy (STXM) provides a valuable alternative in examining the morphology and chemistry of these blends.

The x-ray microscope utilizes a diffraction element called a zone plate to focus soft x-rays into a microprobe. A thin section of sample is placed in this microprobe, and the transmitted photon intensity measured.

Type
Compositional Mapping With High Spatial Resolution
Information
Microscopy and Microanalysis , Volume 4 , Issue S2: Proceedings: Microscopy & Microanalysis '98, Microscopy Society of America 56th Annual Meeting, Microbeam Analysis Society 32nd Annual Meeting, Atlanta, Georgia July 12-16, 1998 , July 1998 , pp. 144 - 145
Copyright
Copyright © Microscopy Society of America

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References

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