TY - JOUR
T1 - Nonlinear phenomena in the mass loss of polyimide films under hyperthermal atomic oxygen beam exposure
AU - Kinoshita, Hiroshi
AU - Tagawa, Masahito
AU - Yokota, Kumiko
AU - Ohmae, Nobuo
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2001/12
Y1 - 2001/12
N2 - Erosion phenomenon of polyimide film under the hyperthermal atomic oxygen beam exposure, which is a simulated low Earth orbit space environment, has been investigated. The polyimide film was spin-coated on a sensor crystal of a quartz crystal microbalance, and the mass of the film was measured under the atomic oxygen beam exposure. The spin-coated polyimide film which was exposed to a 4.7 eV atomic oxygen beam showed a mass gain at the beginning of the reaction and then steady-state mass loss followed. The experimental results of the mass change was analysed by the computational model, and the results showed that the carbon abstraction rate at the oxygen-adsorbed sites was two orders higher than that at the unoxidized polyimide surface. The computational results suggested that a large fraction of the carbon abstraction reaction occurred in the oxygen-adsorbed site through a Langmuir-Hinshelwood reaction mechanism.
AB - Erosion phenomenon of polyimide film under the hyperthermal atomic oxygen beam exposure, which is a simulated low Earth orbit space environment, has been investigated. The polyimide film was spin-coated on a sensor crystal of a quartz crystal microbalance, and the mass of the film was measured under the atomic oxygen beam exposure. The spin-coated polyimide film which was exposed to a 4.7 eV atomic oxygen beam showed a mass gain at the beginning of the reaction and then steady-state mass loss followed. The experimental results of the mass change was analysed by the computational model, and the results showed that the carbon abstraction rate at the oxygen-adsorbed sites was two orders higher than that at the unoxidized polyimide surface. The computational results suggested that a large fraction of the carbon abstraction reaction occurred in the oxygen-adsorbed site through a Langmuir-Hinshelwood reaction mechanism.
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U2 - 10.1088/0954-0083/13/4/301
DO - 10.1088/0954-0083/13/4/301
M3 - Article
AN - SCOPUS:0035671214
VL - 13
SP - 225
EP - 234
JO - High Performance Polymers
JF - High Performance Polymers
SN - 0954-0083
IS - 4
ER -