Journal of Textile Research ›› 2018, Vol. 39 ›› Issue (10): 24-31.doi: 10.13475/j.fzxb.20171003108

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Structure and properties of electrospun polyacrylonitrile/graphene carbon nanofibers

  

  • Received:2017-10-12 Revised:2018-05-24 Online:2018-10-15 Published:2018-10-17

Abstract:

In order to study the effect of graphene addition and different preoxidation conditions on the structure of pre-oxidized fibers and carbon nanofibers, polyacrylonitrile (PAN) nanofibers were prepared by electrospinning, And then carbon nanodibers were obtained by preoxidation and carbonization. Finally, the structural change of pre-oxidized fibers and carbon nanofibers were characterized by Foruier transform infrared spectroscopy, X-ray diffraction, differential scanning calorimetry, Raman spectrometer and scanning electron microscopy. The reaults show that a stable trapezoidal structure is formed by the dehydrogenation, cyclization and oxedization reactions of PAN molceules during the prioxidation process. The relative cyclization rate, aromatization index and degree of cyclization of PAN fibers gradually increase with the rise of preoxidation temperature. The addintion of graphene improves the graphitization degree of carbon nanodibers and has a certain inhibition effect on the dehydrogenation and  cyclization reaction. Thererfore, the fracture degree of carbon nanofibers reduces. When the preoxidation temperature is 260?C, a mew structure of the fibers is substantially formed.

Key words: polyacrylonitrile, graphene, electrospinning, preoxidation treatment, carbonization

[1] . Preparation and characterization of polyvinyl pyrrolidone nanofibrous membranes using funneling air-jet electrospinning [J]. Journal of Textile Research, 2018, 39(10): 7-11.
[2] . Preparation and properties of polypropylene air filter membrane by melt differential electrospinning [J]. Journal of Textile Research, 2018, 39(10): 12-17.
[3] . Research progress on graphene/silk composite materials [J]. Journal of Textile Research, 2018, 39(10): 168-174.
[4] . Preparation and filtration performance of polyacrylonitrile graded composite nanofiber membrane [J]. Journal of Textile Research, 2018, 39(09): 1-7.
[5] . Preparation and properties of laminated nanofiber-based separator with over-temperature protection function [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(07): 21-26.
[6] . Preparation and properties of orientation reinforced composite separator for lithium-ion battery [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(07): 8-14.
[7] . Preparation and properties of electrospun polyacrylonitrile / copper sulfate nanofibrous membrane [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(07): 15-20.
[8] . Preparation technology and application progress of solution blown nanofibers [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(07): 165-173.
[9] . Preparation and properties of electrospun polyacrylonitrile nanofiber coated window screen [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(04): 14-18.
[10] . Overview on mass production of electrospun nanofibers [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(03): 175-180.
[11] . Properties of pre-oxidized polyacrylonitrile / aramid fiber needled filters [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(03): 61-66.
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[13] . Electrospun barium titanate/ poly(vinylidene fluoride) nano-composite flexibility piezoelectric fibrous membranes [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(02): 14-19.
[14] . Preparation of crosslinking and high performance polymers [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(01): 6-10.
[15] . Preparation and properties of wet-spinning graphene fibers [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(01): 1-5.
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