In this chapter, we will present the precursors and manufacturing of carbon fibers. Among the precursors used for the production of carbon fibers, polyacrylonitrile (PAN)-based and pitch-based precursors are the most important. A significant amount of work has been done on relating the fiber structure to the properties and translating that relationship into production for either reducing cost o...

Recently, wearable electronics for health monitoring have been demonstrated with considerable benefits early-stage disease detection. This article reports a flexible, bending-insensitive, bio-compatible and lightweight respiration sensor. The sensor consists of highly oriented carbon nanotube (HO-CNT) films embedded between electro-spun polyacrylonitrile (PAN) layers. By aligning nanotubes the ...

Polyacrylonitrile-based carbon nanofibers (PAN-based CNFs) have great potential to be used for dioxide (CO2) capture due their excellent CO2 adsorption properties. The porous structure of PAN-based CNFs originates from turbostratic structure, which is composed numerous disordered stacks graphitic layers. During the carbonization process, internal arranged toward ordered significantly influences...

Recent studies clearly indicate that the modification of synthetic polymers with enzymes is an environmentally friendly alternative to traditional chemical methods requiring harsh conditions. Some work already performed on polyamide 6.6 (nylon 6.6), polyethyleneterephthalate (PET) and polyacrylonitrile (PAN) revealed that surface functionalization of these materials is a key requirement for an ...

Polyacrylonitrile (PAN)-oxime-nano Fe2O3 was used as an adsorbent for the removal of fluoride from water. The influences of contact time, initial fluoride concentration, and adsorbent dosage were investigated by batch equilibrium studies. The rate of adsorption was rapid with equilibrium being attained after 100min. The Langmuir isotherm model was found to represent the measured adsorption data...

Starch-coated polyethylene (PE) films were prepared by immersing PE in a hot, jet cooked solution of starch. They were allowed to react with acrylonitrile (AN) in the presence of ceric ammonium nitrate initiator, and the graft polymerization that occurred produced starch-g-polyacrylonitrile (PAN) coatings that contained about 25 wt % grafted PAN. The starch-g-PAN coatings tightly adhered to the...

Electrospun nanofiber membranes have been extensively studied as separators in Li-ion batteries due to their large porosity, unique pore structure, and high electrolyte uptake. However, the electrospinning process has some serious drawbacks, such as low spinning rate and high production cost. The centrifugal spinning technique can be used as a fast, cost-effective and safe technique to fabricat...

Blends of polyacrylonitrile (PAN) and lignin were prepared with three different lignin types by solution blending and solution casting. Among three types of lignin, one type was chosen and different blend concentrations were prepared and casted. The casted blend films were characterized chemically with fourier transform infrared spectroscopy (FTIR), and thermally with thermogravimetric analysis...

Blends of polyacrylonitrile (PAN) with three different sacrificial polymers: poly (acrylic acid) (PAA), (methyl methacrylate) (PMMA), and (styrene-co-acrylonitrile) (SAN), were gel spun, oriented through the drawing process, stabilized carbonized to obtain porous carbon fibers. Carbon fibers an average pore diameter 15 nm, 31 37 nm 115 have been obtained from PAN-PAA (90/10), PAN-PMMA PAN-SAN (...

The diaphragm is a key component of the lithium-ion battery and largely determines its performance. Currently, commercial diaphragms suffer from poor thermal stability, low porosity, liquid absorption rate. In this study, we prepared polyurethane/polyacrylonitrile (PU/PAN) using centrifugal spinning method with PU as main substrate PAN additive. results showed that PU/PAN nanofiber by had 3D po...