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Free-Volume Properties of Amorphous Polymers Probed by Positron Annihilation Spectroscopy

Published online by Cambridge University Press:  16 February 2011

Y. C. Jean ,
F. Zandiehnadem  and
Q. Deng
Y. C. Jean
Affiliation:
Department of Chemistry, University of Missouri-Kansas City Kansas City, MO 64110
F. Zandiehnadem
Affiliation:
Department of Chemistry, University of Missouri-Kansas City Kansas City, MO 64110
Q. Deng
Affiliation:
Department of Chemistry, University of Missouri-Kansas City Kansas City, MO 64110
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Abstract

Positron annihilation spectroscopy (PAS) has been developed to characterize the free-volume properties of polymers. Positron annihilation lifetime measurements give direct information about the dimension, content, and hole-size distributions of free-volume in amorphous materials. The angular correlation of positron annihilation radiation measurements give additional information about the shape of the free-volume holes in oriented polymeric materials. The unique capability of PAS to probe free-volume properties is from the fact that positronium atom is preferentially trapped in the atomic-scale holes which have a size ranging from 1 to 10 Å.

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References

[1] For example, see Ferry, J.D., “Viscoelastic Properties of Polymers,” 3rd ed. John Wiley & Sons, NY (1980)Google Scholar
[2] Doolittle, A.K., J. Appl. Phys. 22, 1471 (1951)CrossRefGoogle Scholar
[3] Williams, M.L., Landel, R.F., and Ferry, J.D., J. Amer. Chem. Soc. 77, 3701 (1955);Google Scholar
Turnbull, D., and Cohen, M.H., J. Chem. Phys. 34, 120 (1961)Google Scholar
[4] For example, see, “Positron Solid-State Physics,” ed. Brandt, W. and Dupasquier, A., North Holland Pub. Amsterdam (1983)Google Scholar
[5] For example, see “Positron and Positronium Chemistry,” ed. Schrader, D.M. and Jean, Y.C., Elsevier Pub. Amsterdam (1988).Google Scholar
[6] Victor, J.G., and Torkelson, J.M., Macromolecules, 21 3490 (1988)Google Scholar
[7] Yu, W.C., and Sung, C.S.P., Macromolecules, 21, 365 (1988)CrossRefGoogle Scholar
[8] Tanabe, Y., Muller, N., Fischer, E.W., Polym. J. 16, 1445 (1984)Google Scholar
[9] Jean, Y.C., J. Microchem. 42, 72 (1990)Google Scholar
[10] For examples, see O'Conner, D.V., and Phillips, D., “Time Correlated Single Photon Counting”, Acad. Press. N.Y. (1984);Google Scholar
Demas, J.N., “Excited State Lifetime Measurements”, Acad. Press., N.Y. (1983)Google Scholar
[11] Gregory, R.B., and Zhu, Y., Nucl. Inst. Methods in Phys. Res. A290, 172(1990)Google Scholar
[12] Provencher, S.W., Comp. Phys. Comm. 27, 229 (1982)Google Scholar
[13] Kirkegaard, P., Eldrup, M., Mogensen, O.E., and Pedersen, N., Comput. Phys. Commun, 23, 307 (1981); and PATFIT 88 (1989 version)CrossRefGoogle Scholar
[14] Nakanishi, H. and Jean, Y.C., in “Positron and Positronium Chemistry,” ed. Schrader, D.M. and Jean, Y.C., Elsevier Pub. Amsterdam (1988) Chapter 5, p. 159 Google Scholar
[15] Brandt, W., Berko, S., Walker, W.W., Phys. Rev. 120, 1289 (1960)Google Scholar
[16] Nakanishi, H., Jean, Y.C., Smith, E.G. and Sandreczki, T.C., J. Poly. Sci. B, 27, 1419 (1989)CrossRefGoogle Scholar
[17] Roe, R.J., D. Rigby (this proceedings)Google Scholar
[18] Wang, Y.Y., Nakanishi, H., Jean, Y.C., and Sandreczki, T.C. J. Poly. Sci. B, 28, 1431 (1990)Google Scholar
[19] For example see, Stevens, J.R. and Edwards, M.J., J. Polym. Sci. Polym. Lett. Ed. 30 297 (1970)Google Scholar
[20] Jean, Y.C., Sandreczki, T.C., and Ames, D.P., J. Poly. Sci. B, 24, 1247 (1986)CrossRefGoogle Scholar
[21] Boyer, R.F., Rubber Chem. Tech. 36, 1303 (1963)Google Scholar
[22] Sandreczki, T.C., Nakanishi, H., and Jean, Y.C., in “Proc. of Int. Symp. in Positron Annihilation Studies of Fluids,” ed. Sharma, S.C., World Sci. Pub., Singapore (1988) p. 200 Google Scholar
[23] Aklonis, J.J. and Macknight, , “Introduction to Polymer Viscoelasticity,” 2nd Ed. Wiley Interscience Pub. N.Y. (1982)Google Scholar
[24] For example, see Tant, M.R., and Wilkes, G.L., Polym. Eng. Sci. 21, 874 (1981)Google Scholar
[25] Kobayashi, Y., Zheng, W., Meyer, E.F., McGervey, J.D., Jamieson, A.M., and Simha, R., Macromolecules 22, 2302(1989)Google Scholar
[26] Jean, Y.C., Nakanishi, H., Hao, L.Y., and Sandreczki, T.C., Phys. Rev. B, 42, 9705 (1990)Google Scholar
[27] Jean, Y.C., Nucl. Inst. Methods, A (in press)Google Scholar