Poly(p‐phenylene sulfide) nanofibers prepared by CO2 laser supersonic drawing |
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| Authors: | Hiroyuki Koyama Yuta Watanabe Akihiro Suzuki |
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| Affiliation: | Interdisciplinary Graduate of School of Medicine and Engineering, University of Yamanashi, Japan |
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| Abstract: | Poly(p‐phenylene sulfide) (PPS) nanofibers are prepared by irradiating a PPS fiber with a carbon dioxide (CO2) laser while drawing it at supersonic speeds. A supersonic jet is generated by blowing air into a vacuum chamber through the fiber injection orifice. Nanofibers obtained at a laser power of 30 W and chamber pressure of 10 kPa exhibit an average diameter of 600 nm and a draw ratio of 110,000. Scanning electron microscopy, differential scanning calorimetry, and wide‐angle X‐ray diffraction analyses are employed to investigate the relationships among the chamber pressure, fiber morphology, and crystallization behavior. The nanofibers exhibit two melting temperatures (Tm): approximately 280°C and 320°C. The endothermic peak at Tm = 280°C is ascribable to lamellar crystals and that at Tm = 320°C to the highly complete crystals, since the polymer molecular chain is highly oriented. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40922. |
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| Keywords: | morphology nanoparticles nanostructured polymers nanowires and nanocrystals |
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