Oxidation behavior of polyacrylonitrile fibers evaluated by new stabilization index

Ogawa, Hiroyuki; Saito, Kazuhisa

doi:10.1016/0008-6223(95)00007-z

Cited by 80 publications

(43 citation statements)

References 8 publications

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“…Because of different mass and heat transport phenomena, the results cannot be directly transferred to a continuous conversion of fibres . Additionally, process investigations have been performed partly for batch and partly for continuous processes . This kind of process control leads to varying processes differing for instance in stabilisation (stepwise temperature treatment in continuous processes and linear change of temperature in batch processes) and can therefore hardly be compared.…”

Section: Process‐structure‐relations and Their Technical Potentialsmentioning

confidence: 99%

Influence of processing parameters on the properties of carbon fibres – an overview

Jäger

Cherif

Kirsten

et al. 2016

Materialwissenschaft Werkst

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Several studies have shown the importance of carbon fibres (CF) for different high technology markets. In recent years, different fibre types with improved properties have been developed for those markets. Polyacrylonitrile (PAN) copolymers are the basic raw material (precursor) for these fibres in the predominant case. Improvements of the mechanical fibre properties have mainly been achieved by defect reduction during the manufacturing process. Thus, commercial carbon fibres with tensile strengths up to approx. 7000 MPa are currently available. It can be shown that the strengths can be further increased (in the direction of graphene properties) when the relationship between process conditions and defects due to manufacturing of the fibres is better understood. In this context, novel processes like electron beam crosslinking or UV‐activation have proven to be very promising. The article gives an overview about the current situation in the field of carbon fibres development and particularly shows recent shortcomings with respect to novel applications.

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Section: Process‐structure‐relations and Their Technical Potentialsmentioning

confidence: 99%

Influence of processing parameters on the properties of carbon fibres – an overview

Jäger

Cherif

Kirsten

et al. 2016

Materialwissenschaft Werkst

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“…The silica-activated electrospun fibers were thermally treated at 523 K with a heating rate of 1 K min − 1 and were stabilized at 523 K for 8 h in an air atmosphere [17]. Because the electrospun fibers cannot keep their fiber form and can be melted at high temperatures, oxidation is necessary before heat treatment (carbonization) to change the thermoplastic character into a thermosetting character.…”

Section: Heat Treatmentmentioning

confidence: 99%

Effects of carbon structure orientation on the performance of glucose sensors fabricated from electrospun carbon fibers

Bae

Shin

Im³

et al. 2012

Journal of Non-Crystalline Solids

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“…It is very difficult to track instantaneously the small changes in the polymer structure and properties along with the small changes in the experimental conditions. 7 There are many differences between the experimental conditions and polyacrylonitrile precursor thermal stabilization. 8 To our knowledge, there is almost no report on acrylic acid (AA) as a comonomer.…”

Section: Introductionmentioning

confidence: 99%

Determination of the degradation apparent activation energy of acrylonitrile/acrylic acid copolymers

Hou

Liu

et al. 2006

J of Applied Polymer Sci

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Acrylonitrile/acrylic acid copolymers were prepared by H 2 O/dimethyl formamide suspension polymerization technique. Differential scanning calorimetry was used to investigate the degradation of acrylonitrile/acrylic acid copolymers in air. The apparent activation energy of degradation of the copolymer was calculated with the Kissinger method. Effects of copolymerization conditions on the apparent activation energy of copolymer were studied. It has been found that increasing the dimethyl formamide concentration in the solvent mixture led to a gradual increase (97.3-149.4 kJ mol Ϫ1 ) in the apparent activation energy of degradation of the acrylonitrile/acrylic acid copolymers. The apparent activation energy decreases with increase in acrylic acid concentration, and this change became less prominent as the acrylic acid/acrylonitrile weight ratio is more than 5/95.

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Oxidation behavior of polyacrylonitrile fibers evaluated by new stabilization index

Cited by 80 publications

References 8 publications

Influence of processing parameters on the properties of carbon fibres – an overview

Influence of processing parameters on the properties of carbon fibres – an overview

Effects of carbon structure orientation on the performance of glucose sensors fabricated from electrospun carbon fibers

Determination of the degradation apparent activation energy of acrylonitrile/acrylic acid copolymers

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