Small angle X-ray scattering studies on carbons derived from polyfurfuryl alcohol and polyfurfuryl alcohol-ferrocene copolymers
✍ Scribed by R.G. Jenkins; P.L. Walker Jr.
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 488 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0008-6223
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✦ Synopsis
Shctract-Small
angle X-ray scattering technique, have been uaed to characterize the porous nature of glar)
carbon<, drrivcd from polyfurfuryl alcohol (PFA) and from PFA-ferrocene derivative copolymers. Sample\ were prepared under controlled heating condition5 within the temperature range Y70-2500°C. For carbons produced only from PFA it i\ shown that each contains micropores of a narrow size distribution. '4s heat treatment temperature Increase, there I, a progressive development of both pore structure and of order within the carbon matrix. A comparison i\ made of specific surface area result\ for PFA carbons as measured by small angle X-ray procedures and b> CO. at 7X-C. The small angle X-ray results for the materials produced from the iron-containing precursor\ indicate the presence of two distinct regions of heterogeneity in the carbon matrix. One is microporous and the other is of larger pore, of a much wider size distribution. It i\ also suggested that these larger pores account for the\c carbon\ ha\ing iowcr ten4e strength and higher electrical resistivity than a corresponding PFA carbon.