Surface and Structural Characterization of PVTMS Films Treated by Elemental Fluorine in Liquid Perfluorodecalin; Materials; Vol. 16, iss. 3

Surface and Structural Characterization of PVTMS Films Treated by Elemental Fluorine in Liquid Perfluorodecalin; Materials; Vol. 16, iss. 3

Bibliografske podrobnosti
Parent link:Materials.— .— Basel: MDPI
Vol. 16, iss. 3.— 2023.— Article number 913, 14 p.
Korporativna značnica: Национальный исследовательский Томский политехнический университет
Drugi avtorji: Belov N. A. Nikolay Alexandrovich, Alentjev (Alentiev) A. Yu. Aleksandr Yurjevich, Pashkevich D. S. Dmitry Stanislavovich, Voroshilov F. A. Fedor Anatolievich, Dvilis E. S. Edgar Sergeevich, Asanov I. P. Igor, Nikiforov R. Y. Roman, Chirkov S. V. Sergey, Syrtsova D. A. Daria, Kostina Ju. V. Julia, Bogdanova Yu. G. Yulia
Izvleček:Title screen
Poly(vinyl trimethylsilane) (PVTMS) films were subjected to direct surface fluorination in liquid medium (perfluorodecalin). The samples were investigated using several techniques: SEMXEDS, XPS, ATR-IR, and contact angle measurement. The methods used allowed us to estimate chemical changes occurring because of the treatment. ATR-IR showed that most of the changes occurred in the Si(CH3 )3 group. Monofluorinated Si(CH3 )3 groups formed in the near-surface layer (Ge crystal, 0.66 µm penetration) after 30 min of fluorination, and then di- and trifluorinated groups appeared. Oxidation of the film with oxygen was also shown with the use of ZnSe crystal (2 µm penetration). The XPS method allowed an assessment of the ratio of the main elements at the surface of the fluorinated film. Two different exponential models were proposed to fit the experimental data of SEM-XEDS. Based on the model with the intercept, the depth of fluorination was estimated to be ≤1.1 µm, which is consistent with the result from the literature for the gas-phase fluorination. Contact angle measurements showed that oxidation of the PVTMS surface prevailed for the first 45 min of fluorination (surface hydrophilization) with a subsequent fluorine content increase and hydrophobization of the surface upon 60 min of fluorination
Текстовый файл
Jezik:angleščina
Izdano: 2023
Teme:
электронный ресурс
труды учёных ТПУ
direct surface liquid-phase fluorination
PVTMS
SEM
XEDS
XPS
ATR-IR
wetting method
Online dostop:https://doi.org/10.3390/ma16030913
Format: Elektronski Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=671881

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