Poly(p-Xylylene) and Poly(chloro-p-Xylylene) Protective Coatings Prepared by Deposition in a Nitrogen Flow.

Autor: Nesmelov, A. A., Zavyalov, S. A., Streltsov, D. R., Malakhov, S. N., Dmitryakov, P. V., Bakirov, A. V., Grigoryev, T. E., Chvalun, S. N.
Zdroj: Nanotechnologies in Russia; Sep2020, Vol. 15 Issue 9/10, p647-654, 8p
Abstrakt: Thin-film protective coatings based on poly(p-xylylene) (PPX) and poly(chloro-p-xylylene) (PCPX) have been synthesized by vapor deposition polymerization (VDP) in a vacuum and deposition in a nitrogen flow. Comparison of characteristics of the PPX coatings by atomic force microscopy, infrared spectroscopy, and thermogravimetric analysis has shown that the films deposited in a nitrogen flow, unlike the films prepared by VPD in a vacuum, contain a large amount of low-molecular-weight fractions that worsen the protective characteristics of the films. In addition, the growth rate of these films is too low for practical applications. Analysis of the PCPX-based coatings prepared by these methods has shown a high similarity in composition and structure at comparable growth rates of the coatings. Owing to the high transparency and hydrophobicity of PCPX coatings prepared by deposition in a nitrogen flow, they can be used for the conservation of historical artifacts and written monuments on paper media. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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