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 |
Externí odkaz: |