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Thermally Induced Release of Internal Liquid Phase Encapsulated in a Polymer Membrane Grown by Photoactivated DLICVD

Authors

  • Claudiu Constantin Manole,

    Corresponding author
    1. CIRIMAT, CNRS/INPT/UPS, 4 allée E. Monso, BP 44362, Toulouse cedex 4, 31030 (France)
    2. Politehnica University Bucharest, Faculty of Applied Chemistry and Materials Science, 1-7 Polizu, Bucharest, 011061 (Romania)
    • CIRIMAT, CNRS/INPT/UPS, 4 allée E. Monso, BP 44362, Toulouse cedex 4, 31030 (France)
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  • Francis Maury,

    1. CIRIMAT, CNRS/INPT/UPS, 4 allée E. Monso, BP 44362, Toulouse cedex 4, 31030 (France)
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  • Ioana Demetrescu

    1. Politehnica University Bucharest, Faculty of Applied Chemistry and Materials Science, 1-7 Polizu, Bucharest, 011061 (Romania)
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  • The work was funded by the Sectoral Operational Programme Human Resources Development 2007–2013 of the Romanian Ministry of Labour, Family and Social Protection through the Financial Agreement POSDRU/88/1.5/S/61178. We acknowledge O. Marsan for Raman analyses, Y. Thebault for SEM analyses, C. Charvillat for AFM analyses and Dr. F. Senocq for the valuable experimental assistance and fruitful discussion.

Abstract

An encapsulation of a liquid phase in a thin poly(methyl methacrylate) (PMMA) membrane is achieved in one step by pulsed direct liquid injection (DLI)CVD. The polymer thin film is grown by photo-activation of the gas phase. An original step of the process, described as thermally induced release of internal liquid phase, permits control of the encapsulated liquid during the CVD polymerization. This step highlights a phenomenon that facilitates a conversion of thermal energy into mechanical energy at the nanometer scale. The experimental results are consistent with biomimetic phenomena as biopolymer membranes of living systems, which show how nature makes an efficient use of miniaturization and temperature gradient.

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