Spectroscopic studies and electronic properties of heat treated calcium sulphonate

Autor: B. Deroide, B. Bertheville, J. V. Zanchetta, T. Palermo
Rok vydání: 1994
Předmět:
Zdroj: Lubrication Science. 6:229-245
ISSN: 1557-6833
0954-0075
DOI: 10.1002/ls.3010060303
Popis: Overbased calcium sulphonate and its derivatives have been characterised by means of thermogravimetric analysis, X-ray and IR spectroscopy. The study was carried out after thermal treatment up to 900°C. Different phases appeared, showing a transition from an amorphous system to a crystallised medium. Electrical measurements showed electron behaviour for compounds obtained at low temperatures. ESR experiments produced classical results connected with the decomposition of organic chains.
Databáze: OpenAIRE