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X-Ray Microscopy of Polymer Blends Compatibilized with Clay Nanocomposites

Published online by Cambridge University Press:  02 July 2020

D.A. Winesett ,
H. Ade ,
M. Rafailovich ,
J. Sokolov  and
W. Zhang
D.A. Winesett
Affiliation:
Dept. of Physics, North Carolina State University, Raleigh, NC27695-8202
H. Ade
Affiliation:
Dept. of Physics, North Carolina State University, Raleigh, NC27695-8202
M. Rafailovich
Affiliation:
Dept. Materials Science and Engineering, SUNY@Stony Brook, Stony Brook, NY11794
J. Sokolov
Affiliation:
Dept. Materials Science and Engineering, SUNY@Stony Brook, Stony Brook, NY11794
W. Zhang
Affiliation:
Dept. Materials Science and Engineering, SUNY@Stony Brook, Stony Brook, NY11794
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Extract

Multi-component polymer films are important for numerous technological applications such as paint systems, adhesives, photographic material, and index-matched optical coatings. Unfortunately, different polymer components are often incompatible so they will phase-separate and create large agglomerations of like phases, which has adverse effects on the structural integrity of thin films. Stabilizing polymer blends usually requires the addition of a third component which is often an expensive emulsifying agent such as a block copolymer. Recent studies have shown the emulsifying benefits of less expensive clay additives in oil-water mixtures [1] but the effect on stabilizing polymer blends is not entirely understood.

We are systematically examining the effects of clay additives on polymer thin film blends using Near Edge Xray Absorption Fine Structure (NEXAFS) Microscopy. We present results from films composed of a 50/50 weight percent blend of polystyrene (PS) and poly(methyl methacrylate) (PMMA) (Mw=62k, 25k, respectively) spun cast from toluene onto Si3N4 membranes.

Type
Advances in Polymer Characterization
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 1120 - 1121
Copyright
Copyright © Microscopy Society of America

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References

References:

1.Neuhausler, U., Abend, S., Jacobsen, C, Lagaly, G., Colloid Polym Sci 277 (1999)719.Google Scholar
2.Winesett, D. A., Ade, H.Sokolov, J., Rafailovich, M., Zhu, S., Polym Int. in press (2000).Google Scholar