Structural heterogeneity and its influence on the tensile fracture of PAN-based carbon fibers

Cellulose‐Derived Carbon Fibers Produced via a Continuous Carbonization Process: Investigating Precursor Choice and Carbonization Conditions

“…Commonly, PAN is known to exhibit skin core problems where the skin shows a higher modulus than the core. Skin core problems are assumed to be largely related to the processing parameters . It is likely that the spinning method also contributes to skin core effects.…”

Role of Nitrogen‐Doped Carbon Nanofibers Inside Polymer Membranes for Enhancing Fuel Cell Performance

“…TheN -CNF matrix showed approximately 8 mmt hickness,w hichi sc learly isolated from the Aquivion polymer sandwich-like structure.I n the thermogravimetric analysis (TGA) in Figure 2a,t hree stageso fw eightl oss appeared;e vaporation of water in the membrane,d ecompositiono fs ulfonated groups,a nd break- down of the backbone and sidec hains. [21] Here,t he same behavior of both membranes in the TGA curve below 100 8C suggests that the N-CNFi nt he membraned oes not affect humidification for the membrane,d epending on the hydroscopic properties.…”

Efficient reclamation of carbon fibers from epoxy composite waste through catalytic pyrolysis in molten ZnCl2

“…The degree of graphitization and the integrity of a graphite structure can be judged by the relative intensity ratio of the D band, which is caused by disordered structures, and the G band, which is caused by graphite crystal (R ¼ I D /I G ). 35 The smaller the R value, the higher the graphitization degree of the carbon Fig. 9 The general XPS spectra and deconvolution of the C 1s XPS spectra of (a) the virgin fibers and the fibers reclaimed (b) in air and (c) with ZnCl 2 .…”