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Spectroscopic studies and electronic properties of heat treated calcium sulphonate
Author(s) -
Bertheville B.,
Deroide B.,
Zanchetta J. V.,
Palermo T.
Publication year - 1994
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010060303
Subject(s) - thermogravimetric analysis , calcium , decomposition , thermal decomposition , amorphous solid , chemistry , calcium compounds , spectroscopy , infrared spectroscopy , thermal analysis , inorganic chemistry , thermal , materials science , analytical chemistry (journal) , nuclear chemistry , organic chemistry , thermodynamics , physics , quantum mechanics
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.