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Aliphatic Semidiones; Application of Electron Spin Resonance to Problems of Conformation

✍ Scribed by G. A. Russell

Publisher
John Wiley and Sons
Year
1966
Tongue
English
Weight
120 KB
Volume
5
Category
Article
ISSN
0044-8249

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✦ Synopsis

Pyrolysis of cross-linked polymers, e.g. furan resins, leads to impermeable carbons with He densities of 1.55 g/cm3. Smallangle scattering showed the presence of uniform pores of 20-30 A diameter.

Cellulose can be thermally degraded to flexible graphite fibers and it was shown by wide-and small-angle X-ray diffraction that the fibrillar structure of the cellulose is retained in the carbon residue. If flexible products are to be obtained it is necessary to avoid formation of tarry byproducts by instant removal of pyrolysis gases.

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