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Peculiarities of nano-sized polytetrafluoroethylene coatings structure formation at deposition from gaseous phase

Keywords:

A.A. Rogachev - Ph.D. (Eng), Senior Research Scientist, Belarusian State University of Transport, Homel A.Р. Luchnikov - Senior Research Scientist, Moscow State Institute of Radio-Engeneering, Electronics and Automation (Technical University) M.A. Yarmolenko - Ph.D. (Eng), Senior Research Scientist, Belarusian State University of Transport, Homel A.V. Rogachev - Dr.Sc. (Chem), BNAS Corresponding Member, Belarusian State University of Transport, Homel


The features of morphology, molecular structure and physic properties of the initial stages of nucleation and growth of polytetrafluoroethylene coatings deposited from active gas phase are examined. It was found that the special features of the initial stages of the deposition process (adsorption of particles from the gas phase nucleation and growth of particles of the polymer phase) largely determine the morphology, molecular structure and physico-mechanical properties of PTFE coating deposited from active gas phase. It is shown that the formation and growth in the initial stages of the coating is to form an adsorbed layer on the surface of low molecular weight fragments, binding of the surface regions with high and preferential interaction potential growth of the particles form a stable base. Preliminary plasma treatment of the substrate surface results in an increase in growth rate and formation of a solid at a lower effective thickness of the PTFE coating with preferably linear macromolecules which have a relatively low molecular weight. Formed in the initial growth stages molecular structure determines the physical and mechanical properties of PTFE coatings into thicker layers.
References:

 

  1. Biederman H. Plasma Polymer Films / H. Biederman. London: Imp. Col. Press, 2004. 386 p.
  2. GritsenkoK.P., Krasovsky A.M. Thin-Film Deposition of Polymers by Vacuum Degradation Konstantin // Chem. Rev. 2003. № 103. P. 3607−3649.
  3. Kenneth K.S.L., Jeffrey A. C., Karen K. Structure and Morphology of Fluorocarbon Films Grown by Hot Filament Chemical Vapor Deposition // Gleason Chem. Mater. 2000. V. 12. № 10. P. 3032–3037.
  4. Biederman H., Zeuner M., Zalman J., Bilkova P., Slavinska D., Stelmasuk V., Boldyreva A. // Thin Solid Films. 2001. V. 392. R. 208.
  5. Blanchet, G.B.; Fincher, C.R., Jr.; Jackson, C.L.; Shah, S.I.; Gardner, K.H. // Science. 1993. V. 262. R. 719.
  6. Rogachev A.A, Tamulevičius S., Rogachev A.V., Yarmolenko M.A., Prosycevas I. The structure and molecular orientation of polytetrafluoroethylene coatings deposited from active gas phase // Applied Surface Science. 2009. V. 255. № 15. R. 6851–6856.
  7. Henda R., Wilson G., Gray-Munro J., Alshekhli O., McDonald A.M.Preparation of polytetrafluoroethylene by pulsed electron ablation: Deposition and wettability aspects // Thin Solid Films. 2012. V. 520. R. 1885–1889.
  8. Handbook of Thin-Film Deposition Processes and Techniques. Ed. by Krishna Seshan. 2nd edition. NY: Noyes Publications. 2002.  630 p.
  9. Tolstoy V.P., Chernyshova I.V., Skryshevsky V.A., Wiley J.Handbook of infrared spectroscopy of ultrathin films // Inc., Hoboken, NewJersey. 2003. 370 p.
  10. Lee L.H. Roles of molecular interactions in adhesion, adsorption, contact angle and wettability // J. Adhesion Sci. Technol. 1993. № 6. P. 583–634.
  11. Mittal K.L. Contact Angle, Wettability and Adhesion. VSP. Utrecht. Boston. 2002.
  12. Rodahl M., Kasemo B. A simple setup to simultaneously measure the resonant frequency and the absolute dissipation factor of a quartz crystal microbalance // Rev. Sci. Instrum. 1996. V. 67(9). P. 3238–3241.
  13. Rodahl M. Höök F. Krozer A. Brzezinski P. Kasemo B. Quartz crystal microbalance setup for frequency and Qfactor measurements in gaseous and liquid environments // Review of Scientific Instruments. 1995. V. 66. P. 3924–3930
  14. Voinova M.V., Rodahl M., Jonson M., Kasemo B. Viscoelastic Acoustic Response of Layered Polymer Films at Fluid-Solid Interfaces: Continuum Mechanics Approach // Physica Scripta. 1999. V. 59. P. 391–396.
  15. Rogachev A.A. [et al.] Features of Polytetrafluoroethylene Coating Growth on Activated Surfaces from Gas Phase // Interface Controlled Organic Thin Films. Ed. H.-G. Rubahn, etc. Springer-Verlag Berlin. 2009. P. 85–91.
  16. Woll L.A. Fluoropolymers. Wiley-Interscience. NewYork. 1972.
  17. Rogachev A.A., Luchnikov P.A., Rogachev A.V. Osobennosti formirovanija nanorazmernykh ftorpolimernykh plenok iz gazovojj fazy na nachalnojj stadii rosta // Nanomaterialy i nanostruktury - KHKHI vek. 2010. T. 1. № 1. S. 35–44.
  18. Beamson G., Briggs D. In High Resolution XPS of organic polymers (The Scienta ESCA 300 Database), Wiley, Chichester 1992.
  19. Rogachev A.A., Yarmolenko M.A., Rogachev A.V. Growth Peculiarities and Molecular Structure of Polytetrafluoroethylene Coatings Deposited from an Active Gas Phase on Activated Surface // Journal of surface investigation x-ray, synchrotron and neutron techniques. 2010. № 10. R. 39–43.

 

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