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Journal of Materials Science

, Volume 31, Issue 17, pp 4553–4557 | Cite as

High ductility in poly(methyl methacrylate) induced by absorption and desorption of an acetonitrile aqueous solution

  • M. Kawagoe
  • J. Qiu
  • M. Morita
  • S. Nunomoto
Article

Abstract

Tension tests were conducted in air at room temperature on PMMA sheet specimens which had been previously soaked in a 40 vol % acetonitrile aqueous solution at 20 °C for 24 h and then dried in air at room temperature for 480 h. In contrast with an untreated specimen which fractured at a stress of 84 MPa and a strain of 9 %, shear yielding clearly took place at 42 MPa and the elongational fracture strain increased to about 148 %. No crazes were observed on the specimen surface and as a result the transparency of the PMMA was thoroughly maintained until fracture. Thus this soaking treatment may change PMMA to a completely ductile polymer without a crazing mechanism. The results of the dynamic viscoelastic measurements at 1 Hz show that the glass transition temperature was lowered to about 80 °C (as compared to about 110 °C), and the β relaxation became much sharper with a higher peak value of 20 °C (as compared to a broad curve with a peak at 50 °C). This clear β relaxation at room temperature may contribute to shear yielding and large plastic elongation of the treated PMMA.

Keywords

Ductility PMMA Methacrylate Glass Transition Temperature Methyl Methacrylate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    P. A. Lovell, J. McDonald, D. E. J. Sanders and R. J. Young, Polymer 34 (1993) 61.CrossRefGoogle Scholar
  2. 2.
    P. A. Lovell, M. N. Ryan, M. N. Sherratt and R. J. Young, in proceedings of 9th Int. Conf. Deformation, Yield and Fracture of Polymers, Cambridge, April 1994 (The Institut of Materials, London, 1994) 3/1.Google Scholar
  3. 3.
    F. J. Guild and A. J. Kinloch, ibidin, 6/1.Google Scholar
  4. 4.
    K. Arai, J. Mater. Sci. Jpn. 28 (1991) 264.Google Scholar
  5. 5.
    P. Cebe and S. Y. Chung, J. Mater. Sci. 25 (1990) 2367.CrossRefGoogle Scholar
  6. 6.
    Y. Fujita, K. K. Koo, J. C. Angola, T. Inoue and T. Sakai, Kobunshi Ronbunshu 43 (1986) 119.CrossRefGoogle Scholar
  7. 7.
    J. A. Sauer and C. C. Chen, Adv. Polym. Sci. 52/53 (1983) 189.Google Scholar
  8. 8.
    T. Alfrey, E. F. Gurnee and W. G. Lloyd, J. Polym. Sci. (C) 12 (1966) 249.Google Scholar
  9. 9.
    M. Kawagoe and M. Morita, J. Mater. Sci. 29 (1994) 6041.CrossRefGoogle Scholar
  10. 10.
    J. Heijboer, Int. J. Polym. Mater. 6 (1977) 11.CrossRefGoogle Scholar
  11. 11.
    R. F. Boyer, Polym. Engng. Sci. 8 (1968) 161.CrossRefGoogle Scholar
  12. 12.
    N. L. Thomas and A. H. Windle, Polymer 22 (1981) 627.CrossRefGoogle Scholar
  13. 13.
    T. Asahara, N. Tokura, M. Ookawara, J. Kumanotani, and M. Senoo, in “Youzai Handbook”, (Kodansha, Tokyo, 1976) p. 642.Google Scholar
  14. 14.
    N. W. Brooks, R. A. Duckett, J. Rose, I. M. Ward and J. Clements, Polymer 34 (1993) 4038.CrossRefGoogle Scholar
  15. 15.
    X. Ma, J. A. Sauer, and M. Hara, in proceedings of 9th Int. Conf. Deformation, Yield and Fracture of Polymers, 1994, P12/1.Google Scholar

Copyright information

© Chapman & Hall 1996

Authors and Affiliations

  • M. Kawagoe
    • 1
  • J. Qiu
    • 1
  • M. Morita
    • 1
  • S. Nunomoto
    • 2
  1. 1.Department of Mechanical Systems Engineering, Faculty of EngineeringToyama Prefectural UniversityToyamaJapan
  2. 2.Department of Industrial ChemistryToyama National College of TechnologyToyamaJapan

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