ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The Mőssbauer spectrum of Fe2O3 dispersed in PTFE is a doublet (IS=0.33 – 0.35 mm/s; QS=0.89 – 0.90 mm/s) and is unaltered by prolonged exposure to acrylic acid. Under exposure to X-rays, a new Fe (III) site is found, which differs from the preextant site in having a different microenvironment asymmetry. Acrylic acid treatment of preirradiated PTFE-iron (III) oxide composite generates an environment of a great distortion around iron nuclei as shown by the quadrupole splitting (QS=1.11 mm/s). These results show that X-rays sensitize Fe(III) towards asymmetric sites in finely dispersed iron (III) oxide particles in the amorphous region of the matrix.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00255384
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