Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 295, Issue 11, Pages 1003-1008Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201000157
Keywords
carbon nanotubes; composites; electrospinning fibers; ultra-high molecular weight polyethylene
Funding
- Center for Absorption in Science of the Ministry of Immigrant Absorption
- Committee for Planning and Budgeting of the Council for Higher Education
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Micron-sized fibers of UHMWPE reinforced with CNT were fabricated by the electrospinning process. Conditions for a metastable mutual solution of UHMWPE and CNTs were found at elevated temperature. These solutions were used for electrospining using a device having controlled temperature and gaseous environment around the electrospun liquid jet. The fabricated micron-sized fibers exhibited the reinforcing CNTs as self-organized nano-ropes embedded within them. A post-spinning drawing process enhanced the mechanical properties of the composite fibers to the level of 6.6 GPa strength and elongation at break of 6%. The CNT nano-ropes form spontaneously in the liquid jet during electrospinning, and provide the reinforcement framework which is amenable for post-drawing of the fibers for subsequent utilization as composite nanofibers. The experimental results exhibit the highest strength value reported to date for electrospun fibers.
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