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Variation of the mechanical properties of pulsed laser deposited PMMA films during annealing

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Abstract

The structural and mechanical properties of polymethyl methacrylate (PMMA) thin films produced by pulsed laser deposition in ultra-high vacuum were investigated by infrared spectroscopy, electron microscopy, size-exclusion chromatography and microhardness measurements. After preparation, the film hardness and elastic modulus are found to be increased. This is caused by a reduced chain length of the polymer film to values of 5800 g/mol and by cross links of an amount of about 20% of the polymer, while the chemical structure of the deposited films is comparable to the target material. During annealing, relaxation processes lead to a reduction of the film hardness, without changing the cross-linked part in the samples.

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Authors and Affiliations

  1. Institut für Materialphysik, Universität Göttingen, Tammannstrasse 1, 37077, Göttingen, Germany

    E. Süske, T. Scharf & H.-U. Krebs

  2. II. Physikalisches Institut, Universität Göttingen, Tammannstrasse 1, 37077, Göttingen, Germany

    P. Schaaf

  3. Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, 37077, Göttingen, Germany

    E. Panchenko, D. Nelke & M. Buback

  4. Institut für Rechtsmedizin, Universität Göttingen, Windausweg 2, 37073, Göttingen, Germany

    H. Kijewski

Authors
  1. E. Süske
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  2. T. Scharf
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  3. P. Schaaf
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  4. E. Panchenko
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  5. D. Nelke
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  6. M. Buback
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  7. H. Kijewski
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  8. H.-U. Krebs
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Correspondence to E. Süske.

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PACS

81.05.Lg; 81.15.Fg; 68.55.Jk; 68.60.Bs; 68.60.Dv

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Süske, E., Scharf, T., Schaaf, P. et al. Variation of the mechanical properties of pulsed laser deposited PMMA films during annealing. Appl. Phys. A 79, 1295–1297 (2004). https://doi.org/10.1007/s00339-004-2754-3

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  • DOI: https://doi.org/10.1007/s00339-004-2754-3

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