Surface investigation on Upilex-S polymide film iradiated by vacuum ultraviolet radiation
来源期刊：Rare Metals2007年第S1期
论文作者：LIU Yuyan),GONG Xianyun),WAN Zhimin),and DU Xingwen)) Department of Applied Chemistry,Harbin Institute of Technology,Harbin ,China ) Department of Life Science and Chemistry,Harbin University,Harbin ,China ) Analysis and Measurement Center,Harbin Institute of Technology,Harbin ,China ) Center for Composite Materials,Harbin Institute of Technology,Harbin ,China
文章页码：168 - 174
摘 要：Vacuum ultraviolet radiation of Upilex-S polyimide film 25 μm thick was performed using a gas jet type of vacuum ultraviolet simulator which gives unfixed wavelength from 5 nm to 200 nm.Nanoparticles redeposited on the films were observed and the nanoparticles formed on the surface consist mainly of carbon clusters.Changes in the composition and the chemical characteristics of film surface after radiation were identified by X-ray photoelectron spectroscopy（XPS）.Relative O content in the radiated area was found to be higher,while N content was lower than in the pristine area.This indicates that Upilex-S polyimide film releases N atoms as volatile species.And the C1s,O1s envelopes were fitted using Multipak Spectrum software.The surface morphologies on iradiated area were examined by Atomic Force Microscope（AFM）.Pieces of radiant products protrude from the eradiated surface,leading to considerable roughness for the iradiated area.And the surface transmittance of Upilex-S film after radiation reduces.
LIU Yuyan1),GONG Xianyun2),WAN Zhimin3),and DU Xingwen4)1) Department of Applied Chemistry,Harbin Institute of Technology,Harbin 150001,China 2) Department of Life Science and Chemistry,Harbin University,Harbin 150001,China 3) Analysis and Measurement Center,Harbin Institute of Technology,Harbin 150001,China 4) Center for Composite Materials,Harbin Institute of Technology,Harbin 150001,China
摘 要：Vacuum ultraviolet radiation of Upilex-S polyimide film 25 μm thick was performed using a gas jet type of vacuum ultraviolet simulator which gives unfixed wavelength from 5 nm to 200 nm.Nanoparticles redeposited on the films were observed and the nanoparticles formed on the surface consist mainly of carbon clusters.Changes in the composition and the chemical characteristics of film surface after radiation were identified by X-ray photoelectron spectroscopy（XPS）.Relative O content in the radiated area was found to be higher,while N content was lower than in the pristine area.This indicates that Upilex-S polyimide film releases N atoms as volatile species.And the C1s,O1s envelopes were fitted using Multipak Spectrum software.The surface morphologies on iradiated area were examined by Atomic Force Microscope（AFM）.Pieces of radiant products protrude from the eradiated surface,leading to considerable roughness for the iradiated area.And the surface transmittance of Upilex-S film after radiation reduces.
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