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Effects of atomic oxygen and ultraviolet in low earth orbit on low surface energy polymer film
Author(s) -
Wang Xiaolong,
Feng Zhou,
Liu Weimin
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.33132
Subject(s) - x ray photoelectron spectroscopy , contact angle , polymer , ultraviolet , materials science , irradiation , wetting , surface energy , oxygen , analytical chemistry (journal) , spectroscopy , chemistry , chemical engineering , composite material , optoelectronics , physics , organic chemistry , chromatography , nuclear physics , engineering , quantum mechanics
Effects of atomic oxygen (AO) and ultraviolet (UV) on a polymer film with surface energy of 8.0 mJ m −2 derived from poly(1H,1H‐perfluorooctyl methylacrylate) were investigated by contact angle measurements, X‐ray photoelectron spectroscopy, and atomic force microscope. The film was exposed to AO with a flux of 6.73 × 10 15 atoms cm −2 s −1 and UV with intensity of 15.8 mW cm −2 at wavelength of 200–450 nm, respectively. It is found that AO and UV irradiation resulted in the reduction of film thickness, change of wettability, and increase of surface energy, and AO exhibited more serious effects than UV on the fluorinated polymer film. Reduced rate of thickness of the film was almost proportional to the AO exposure time. After exposed to AO and UV irradiation, the surface energy of the film increased to 17.3 mJ m −2 and 11.0 mJ m −2 , respectively. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011