Evaluation of piezoelectric PVDF polymers for use in space environments. Part II, Effects of atomic oxygen and vacuum UV exposure.
- NASA Glenn Research Center, Cleveland, OH
The effects of atomic oxygen (AO) and vacuum UV radiation simulating low Earth orbit conditions on two commercially available piezoelectric polymer films, poly(vinylidene fluoride) (PVDF) and poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE), have been studied. Surface erosion and pattern development are significant for both polymers. Erosion yields were determined as 2.8 x 10{sup -24} cm{sup 3}/atom for PVDF and 2.5 x 10{sup -24} cm{sup 3}/atom for P(VDF-TrFE). The piezoelectric properties of the residual material of both polymers were largely unchanged after exposure, although a slight shift in the Curie transition of the P(VDF-TrFE) was observed. A lightly cross-linked network was formed in the copolymer presumably because of penetrating vacuum ultraviolet (VUV) radiation, while the homopolymer remained uncross-linked. These differences were attributed to varying degrees of crystallinity and potentially greater absorption, and hence damage, of VUV radiation in P(VDF-TrFE) compared with PVDF.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 990075
- Report Number(s):
- SAND2005-2159J
- Journal Information:
- Proposed for publication in Journal of Polymer Science B: Polymer Physics., Journal Name: Proposed for publication in Journal of Polymer Science B: Polymer Physics. Journal Issue: 18 Vol. 43; ISSN 1099-0488; ISSN 0887-6266
- Country of Publication:
- United States
- Language:
- English
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