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Spectroscopic Investigations on the Effect of Proton Bombardment of Polyimide

Published online by Cambridge University Press:  01 February 2011

David L Edwards ,
Kim K de Groh ,
Mary Nehls ,
Sharon K Miller ,
Bruce Banks ,
Chris Stephens ,
Ramon Artiaga ,
Roberto Benson ,
S. Balascuta  and
Jeffrey M. Zaleski
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David L Edwards
Affiliation:
NASA MSFC Marshall Space Flight Center, Huntsville, Alabama
Kim K de Groh
Affiliation:
NASA Glenn, Cleveland, Ohio
Mary Nehls
Affiliation:
NASA MSFC Marshall Space Flight Center, Huntsville, Alabama
Sharon K Miller
Affiliation:
NASA Glenn, Cleveland, Ohio
Bruce Banks
Affiliation:
NASA Glenn, Cleveland, Ohio
Chris Stephens
Affiliation:
University of Tennessee, Knoxville, Tennessee
Ramon Artiaga
Affiliation:
University of la Coruna, Ferol, Spain
Roberto Benson
Affiliation:
University of Tennessee, Knoxville, Tennessee
S. Balascuta
Affiliation:
Indiana University, Bloomington, IN.
Jeffrey M. Zaleski
Affiliation:
Indiana University, Bloomington, IN.
Mircea Chipara
Affiliation:
Indiana University, Bloomington, IN.
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Abstract

The effect of the radiation component of the space environment on polyimide films is reviewed. Experimental data obtained by electron spin resonance and dynamical mechanical analysis proved that the ionizing radiation generates free radicals with a long lifetime through a dominant chain scission mechanism. The radiation-induced shift of the glass transition of polyimide towards lower values confirms the decrease of the average molecular mass of the polymer during irradiation. The importance of polyimide for space exploration is critically analyzed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 851: Symposium NN – Materials for Space Applications , 2004 , NN9.6
Copyright
Copyright © Materials Research Society 2005

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References

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