Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 297, Issue 3, Pages 209-213Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201100176
Keywords
electrospinning; ferroelectricity; fibers; mechanical properties; yarns
Funding
- Australian Research Council (ARC) [DP0665856]
- Australian Research Council [DP0665856] Funding Source: Australian Research Council
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0746703] Funding Source: National Science Foundation
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An electrospinning method to obtain well-aligned self-assembled PVDF fibers in the form of yarn structures is presented. Post-treatments such as stretching at 100 degrees C and annealing improve the tensile modulus and strength of the fibers by 17 and 41%, respectively. The results reveal that post-treatment on fiber yarns induce crystallinity and beta-crystalline phase formation, which in turn impart a noticeable effect on the strength and stiffness of the fibers. An approximate to 10% improvement in the ferroelectric beta-crystalline phase fraction is estimated for the post-treated yarns. Such yarn structures with improved strength and ferroelectric beta-phase content can be useful for nanoscale and microscale electronic devices.
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