Piezoelectric PVDF materials performance and operation limits in space environments

Celina, Mathew, Dargaville, Tim R., & Chaplya, Pavel M. (2004) Piezoelectric PVDF materials performance and operation limits in space environments. Materials Research Society Symposium Proceedings, 851, pp. 449-460.

View at publisher

Abstract

Piezoelectric polymers based on polyvinylidene fluoride (PVDF) are of interest for large aperture space-based telescopes. Dimensional adjustments of adaptive polymer films are achieved via charge deposition and require a detailed understanding of the piezoelectric material responses which are expected to suffer due to strong vacuum UV, gamma, X-ray, energetic particles and atomic oxygen under low earth orbit exposure conditions. The degradation of PVDF and its copolymers under various stress environments has been investigated. Initial radiation aging studies using gamma- and e-beam irradiation have shown complex material changes with significant crosslinking, lowered melting and Curie points (where observable), effects on crystallinity, but little influence on overall piezoelectric properties. Surprisingly, complex aging processes have also been observed in elevated temperature environments with annealing phenomena and cyclic stresses resulting in thermal depoling of domains. Overall materials performance appears to be governed by a combination of chemical and physical degradation processes. Molecular changes are primarily induced via radiative damage, and physical damage from temperature and AO exposure is evident as depoling and surface erosion. Major differences between individual copolymers have been observed providing feedback on material selection strategies.

Impact and interest:

8 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

ID Code: 33124
Item Type: Journal Article
Refereed: No
Additional URLs:
Keywords: PVDF, Piezoelectric, Low Earth orbit
ISSN: 0272-9172
Deposited On: 14 Jul 2010 04:44
Last Modified: 10 Aug 2011 13:32

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page