1980
DOI: 10.1002/pol.1980.180180702
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Small‐angle x‐ray scattering study of ionomer deformation

Abstract: The small-angle x-ray scattering (SAXS) pattern from a cesium salt of a 6.1 mole% ethylenemethacrylic acid (E-MAA) copolymer is shown to become azimuthally dependent on sample elongation. SAXS was measured using the Oak Ridge National Laboratory (ORNL) spectrometer with pinhole collimation and a two-dimensional position-sensitive detector. The sample was quenched prior to deformation to avoid crystallization of the ethylene unit which would complicate the interpretation of scattering. The observed SAXS pattern… Show more

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Cited by 78 publications
(60 citation statements)
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“…This model is similar, but not the same, as the lamellar model originally suggested by Macknight and coworkers [118]; the difference is that all evidence points to the planar aggregates being of very small lateral extents. Perfect planes are of course not necessary, that is, the centers of all metal atoms do not necessarily lie in a plane.…”
Section: Ionic Aggregates: Nanometer Length Scalesupporting
confidence: 72%
“…This model is similar, but not the same, as the lamellar model originally suggested by Macknight and coworkers [118]; the difference is that all evidence points to the planar aggregates being of very small lateral extents. Perfect planes are of course not necessary, that is, the centers of all metal atoms do not necessarily lie in a plane.…”
Section: Ionic Aggregates: Nanometer Length Scalesupporting
confidence: 72%
“…It is easy to show that if the end-to-end distance of a chain changes as a consequence of aggregation and the motion of the chain ends are uncorrelated, then there must be an increase in the mean-square chain dimensions. The argument proceeds as follows: by definition (r 2 ) = (r·r) (4) where r is the vector end-to-end distance of the chain or subchain before aggregation.…”
Section: Discussionmentioning
confidence: 99%
“…A recent deformation study reveals that in a poly(cesium ethylenecarboxylate) ionomer, the X-ray peak is azimuthally dependent on sample elongation. 4 A synthesis of all available information leads to the conclusion that this peak arises from intraparticle scattering caused by a structural feature of the cluster. The exact nature of this structural feature remains unclear.…”
Section: The Model Envisagesmentioning
confidence: 99%
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