Flash thermolysis of dibenzyl and diphenyl disulphides

Flash thermolysis of dibenzyl and diphenyl disulphides at 500 degrees C and 1000 degrees C we investigated. Experiments were conducted under reduced p ressure (1.5 X 10(-3) Torr) in a heated horizontal quartz tube. The decompo sition products were identified by gas chromatography fitted with a mass sp ectrophotometer. Dibenzyl disulphide decomposes mainly to elemental sulphur , dibenzyl and stilbene. Diphenyl disulphide decomposes mainly to diphenyl sulphide, phenyl thiol and hydrocarbons. In addition, small amounts of dibe nzothiophene, diphenyl trisulphide, elemental sulphur and a few phenyl ring thioethers are formed. Possible explanations the relationship between pyro lysis results of tested disulphides and their load-carrying performance are given. (C) 2000 Published by Elsevier Science S.A. All rights reserved.