The characterization of ultrafine carbon powders by SAXS and Raman spectra

Well‐Defined Carbon Nanoparticles Prepared from Water‐Soluble Shell Cross‐linked Micelles that Contain Polyacrylonitrile Cores

“…Chemie nearly as sharp and distinct as those typically reported for PAN-derived carbon fibers [41,42] or even as in nanostructured carbons derived from "bulk" block copolymers that contain PAN, as described in our earlier work. [14] The less-ordered nature of the graphitic species formed upon pyrolysis of SCKs can be explained by very high surface-to-volume ratio of this system, which leads inevitably to a more frequent occurrence of structural defects.…”

Small angle X-ray scattering studies of poly(3-octylthiophene) and poly(3,3ʺ-dioctyl-2,2ʺ,5′2ʺ-terthiophene) polymer thin films

“…The surface fractal dimension value of 2 indicates a very smooth surface, while 3 indicates irregular surface. The value of a can be estimated (3 < a < 4) with the help of a linear equation ln(I( Q)) = ln(I o ) À aln( Q) [2,10,11]. A linear relation over a substantial range was observed in ln(I( Q)) À ln( Q) plot in Fig.…”

“…I( Q) = 2p(Dq) 2 S/Q 4 [9]. Considering this into account, the specific surface area S s can be calculated from the Mittelbatch -Porod formula [10] S=V…”

Characterization of the nanopore structures of PAN-based carbon fiber precursors by small angle X-ray scattering

“…There have been some open-door reports about the research of carbon fiber precursors [1][2][3]. A great number of papers have reported the importance of using small angle scattering (SAS) for this purpose [4][5][6][7][8][9][10][11]. Small angle X-ray scattering (SAXS) technique is a powerful tool for characterizing the porosity of materials with pore size ranging from a few Å to about 2000 Å.…”