Controlled change of structure and properties of nanometer polymer layers deposited by electron beam polymerization from vapour phase

M. A. Bruk; A. V. Spirin; I. A. Volegova; E. N. Zhikharev; V. A. Kal'nov; Yu. K. Godovsky

doi:10.1117/12.677152

10 June 2006 Controlled change of structure and properties of nanometer polymer layers deposited by electron beam polymerization from vapour phase

M. A. Bruk, A. V. Spirin, I. A. Volegova, E. N. Zhikharev, V. A. Kal'nov, Yu. K. Godovsky

Author Affiliations +

Proceedings Volume 6260, Micro- and Nanoelectronics 2005; 62600J (2006) https://doi.org/10.1117/12.677152
Event: Micro- and Nanoelectronics 2005, 2005, Zvenigorod, Russian Federation

Abstract

Electron beam polymerization of monomers from vapour phase is advanced method of thin polymer layers (TPL) deposition on solid substrates. The structure features and properties of TPL formed from tetrafluoroethylene and methylmethacrylate vapour at different E-beam current densities were found to be different strongly. In 1-10 μA/cm² field the low molecular mass PTFE films with tape and disk supramolecular structures formed. These films are low thermostable (to 250-300°C) because of sublimation under heating. Macromolecules in these films are regulated (mesomorphic state). The polymer chain axes are oriented perpendicularly toward substrate surface. In 10²-10³ μA/cm² field the films with high thermostability (400-450°C) form. These films are probably crosslinked. In 10⁴-10⁶ μA/cm² field the amorphous, strongly crosslinked, high thermostable, high uniform films form. Polymethylmethacrylate (PMIMA) films formed at 1-10 μA/cm² rapidly dissolve in organic solvents. The PMMA films deposited at 10²-10³ μA/cm² only swell in organic solvents. The observed differences of structure and properties of films deposited by E-VDP method are caused probably by different balance of chain polymerization and polyrecombination mechanisms in the film deposition processes. In highest current density range the polyrecombination mechanism predominates. In low current density the main mechanism of deposition is the radical-chain polymerization. The results obtained show great possibilities of controlled change of properties of E-VDP films deposited from the same precursor.

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M. A. Bruk, A. V. Spirin, I. A. Volegova, E. N. Zhikharev, V. A. Kal'nov, and Yu. K. Godovsky "Controlled change of structure and properties of nanometer polymer layers deposited by electron beam polymerization from vapour phase", Proc. SPIE 6260, Micro- and Nanoelectronics 2005, 62600J (10 June 2006); https://doi.org/10.1117/12.677152

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