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Evaluation of thermal and oxidative stability of three generations of phenolic based novel dendritic fuel and lubricant additives

Higgins, C. L., Filip, S. V., Afsar, A. and Hayes, W. (2019) Evaluation of thermal and oxidative stability of three generations of phenolic based novel dendritic fuel and lubricant additives. Reactive and Functional Polymers, 142. pp. 119-127. ISSN 1381-5148

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To link to this item DOI: 10.1016/j.reactfunctpolym.2019.06.009

Abstract/Summary

Antioxidants, particularly those designed for use in hydrocarbon media, suffer from a variety of limitations including high volatility and poor solubility. Using 2,2-bis(hydroxymethyl)propionic acid as the branching unit, a series of novel dendrons featuring 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic ester chain ends have been synthesised to provide improved solubility of such hindered phenolic antioxidants. The thermal stability, assessed by thermogravimetric analysis, revealed that all the functionalised dendrons have enhanced thermal stability when compared to commercial antioxidants (BHT, Irganox L135 and Irganox L57). Antioxidant ability was evaluated using pressurised differential scanning calorimetry and when blended with a lubricant base oil, at 0.5% w/w, an increase in antioxidant performance was observed when compared to the commercial antioxidants.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Chemical Analysis Facility (CAF)
Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:84345
Publisher:Elsevier

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