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Selection and optimization of piezoelectric polyvinylidene fluoride polymers for adaptive optics in space environments

Celina, Mathew, Dargaville, Tim R., Assink, Roger A., & Martin, Jeffrey W. (2005) Selection and optimization of piezoelectric polyvinylidene fluoride polymers for adaptive optics in space environments. High Performance Polymers, 17(4), pp. 575-592.

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Abstract

Various piezoelectric polymers based on polyvinylidene fluoride (PVDF) are of interest for large aperture space-based telescopes. Dimensional adjustments of adaptive polymer films depend on charge deposition and require a detailed understanding of the piezoelectric material responses which are expected to deteriorate owing to strong vacuum UV, � -, X-ray, energetic particles and atomic oxygen exposure. We have investigated the degradation of PVDF and its copolymers under various stress environments detrimental to reliable operation in space. Initial radiation aging studies have shown complex material changes with lowered Curie temperatures, complex material changes with lowered melting points, morphological transformations and significant crosslinking, but little influence on piezoelectric d33 constants. Complex aging processes have also been observed in accelerated temperature environments inducing annealing phenomena and cyclic stresses. The results suggest that poling and chain orientation are negatively affected by radiation and temperature exposure. A framework for dealing with these complex material qualification issues and overall system survivability predictions in low earth orbit conditions has been established. It allows for improved material selection, feedback for manufacturing and processing, material optimization/stabilization strategies and provides guidance on any alternative materials.

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6 citations in Scopus
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6 citations in Web of Science®

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ID Code: 33107
Item Type: Journal Article
Additional URLs:
Keywords: Polyvinylidene fluoride (PVDF), polymer, materials performance, space environment, exposure, selection, characterization
DOI: 10.1177/0954008305052206
ISSN: 0954-0083
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > MACROMOLECULAR AND MATERIALS CHEMISTRY (030300)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > AEROSPACE ENGINEERING (090100)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Deposited On: 14 Jul 2010 08:39
Last Modified: 01 Mar 2012 00:09

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