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Determining the Antioxidant Activities of Organic Sulfides by Rotary Bomb Oxidation Test and Pressurized Differential Scanning Calorimetry by Chao Qiu; Sheng Han; Xingguo Cheng; Tianhui Ren is a Materials Science article available to read on EtoBox.

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Several typical sulfides were selected and dissolved in hydrotreated base oil, and the antioxidant activities of sulfides studied by rotary bomb oxidation test (RBOT), isothermal pressurized differential scanning calorimetry (PDSC) and non-isothermal PDSC. Four characteristic indexes of constant heating-rate PDSC were chosen and normalized to a comprehensive index by a new method. The sequence determined by the comprehensive index accords partly to the sequence determined by RBOT and accords well with the results reported. The antioxidant activity of sulfide increases with the number of sulfur atoms. Sulfide with long chain has good antioxidant activity, and the antioxidant activity of cyclic sulfides is poor. The method of normalizing the data is useful to determine the oxidation performances of samples, especially when the antioxidant activities vary greatly.

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Author

Chao Qiu; Sheng Han; Xingguo Cheng; Tianhui Ren

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0040-6031)

Published

2006

Language

EN

Field

Materials Science (Physical Sciences)