Post spinning modification of PAN fibres — a review

Mittal, Jagjiwan; Mathur, R.B.; Bahl, Om P.

doi:10.1016/s0008-6223(97)00126-7

Cited by 79 publications

(42 citation statements)

References 60 publications

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“…[1,2] Regarding the development of carbon fibers from PAN precursors, oxidative stabilization has been considered to be the most decisive step in industrial fabrication. Certainly, the stabilization largely governs the final structure of the fiber and hence its ultimate mechanical properties and a number of excellent papers and reviews have been reported on this subject.…”

Section: Introductionmentioning

confidence: 99%

Composites of Polyacrylonitrile and Multiwalled Carbon Nanotubes Prepared by Gelation/Crystallization from Solution

Koganemaru

Bin

Agari

et al. 2004

Adv Funct Materials

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Composite films of polyacrylonitrile (PAN) and multiwalled carbon nanotubes (MWNTs) have been prepared by gelation/crystallization from solution. The contents of MWNTs were 5–10 wt.‐%, measured against PAN. The electrical and mechanical properties have been studied in comparison with those of the homopolymer PAN films prepared from the same method. Furthermore, stabilization and the carbonization have been carried out by using the drawn PAN–MWNTs as a new precursor to prepare carbon films with a cross‐sectional area much larger than that of a commercial carbon fiber (> 3000 times). The MWNTs within the PAN matrix promote the formation of a condensed aromatic ladder structure during the stabilization process and play an important role in preparing PAN‐based carbon material with high carbon quality and high mechanical properties. When the stabilized composites with 10 wt.‐% MWNTs are carbonized at 1000 °C, the Young's modulus reaches 37.5 GPa, and the electrical conductivity reaches 102 S cm–1. The carbonized PAN homopolymer does not form an adequately robust bulk film for the mechanical properties to be measured.

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Section: Introductionmentioning

confidence: 99%

Composites of Polyacrylonitrile and Multiwalled Carbon Nanotubes Prepared by Gelation/Crystallization from Solution

Koganemaru

Bin

Agari

et al. 2004

Adv Funct Materials

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“…The fiber might be subjected to a modification process previous to the pyrolysis which might include resin coating, chemical impregnation and stretching with plasticizer. Modification of the fibers affects the pyrolysis process by reducing the activation energy of cyclization reactions, decreasing the stabilization energy, and also improving the orientation of molecular chains in the fibers [88,89]. The fibers are then subjected to the pyrolysis processes which has different stages depending on the type of CF desired [89].…”

Section: Carbon Fibersmentioning

confidence: 99%

Carbon Materials for Fuel Cells

Bruno

Viva

2013

Direct Alcohol Fuel Cells

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Carbon materials are fundamental for the manufacturing of fuel cells. Several fuel cell components are made entirely of carbon in a graphitic form. In the present chapter, an overview of the different fuel cell carbon components and the materials used in their preparation will be presented. Novel approaches in the synthetic method, in order to impart desired properties, and in the manufacturing of the components will be shown. Also, relevant results on the latest research conducted will be discussed.

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“…Nowadays, more than 90 % carbon fibers are made from PAN precursor fibers [14]. It has been demonstrated that high-quality PAN precursor fibers produced through high drawing ratio are essential for preparation of carbon fiber with high specific modulus and specific strength [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of microgel content on the shear and extensional rheology of polyacrylonitrile solution

et al. 2014

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Crosslinked polyacrylonitrile (cPAN) particles with uniform size were synthesized through precipitation polymerization. The as-formed cPAN nanoparticles were dispersed in polyacrylonitrile (PAN) solutions to form microgels with various contents, which were used as model to study the influence of the microgels on the shear and extensional rheology of PAN solutions. Flow curves of steady shear viscosity displayed shear thinning and followed time-temperature superposition principle. The dependency of activation energy on the content of cPAN microgels indicated that introduction of microgels weakened the temperature sensitivity of PAN solutions. For extensional rheology study, we utilized the capillary thinning rheometry to characterize the elongation relaxation time and apparent extensional viscosity. Study of filament thinning dynamics with a series of system strains confirmed that the higher content of cPAN microgels the lower extensional strength and worse spinnability of the PAN solution.

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Post spinning modification of PAN fibres — a review

Cited by 79 publications

References 60 publications

Composites of Polyacrylonitrile and Multiwalled Carbon Nanotubes Prepared by Gelation/Crystallization from Solution

Composites of Polyacrylonitrile and Multiwalled Carbon Nanotubes Prepared by Gelation/Crystallization from Solution

Carbon Materials for Fuel Cells

Effect of microgel content on the shear and extensional rheology of polyacrylonitrile solution

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