Thermal polymerisation and autoxidation of technical grade linoleic acid

P. Tolvanen; P. Mäki-Arvela; K. Eränen; J. Wärnå; B. Holmbom; T. Salmi; D. Yu. Murzin

doi:10.1007/s11746-008-1229-7

Thermal polymerisation and autoxidation of technical grade linoleic acid

P. Tolvanen, P. Mäki-Arvela, K. Eränen, J. Wärnå, B. Holmbom, T. Salmi, D. Yu. Murzin

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

Abstract

Oligomerisation of technical grade linoleic acid was studied over a broad temperature range. Effects of water and air were specifically addressed. The products were analysed by size-exclusion chromatography to give directly the concentrations of dimers and trimers. Oligomerisation of technical grade linoleic acid was seen to be dependent on temperature and the activation energy for monomer disappearance was 109 kJ/mol. A phenomenological kinetic model was proposed for the linoleic acid oligomerisation giving good model predictions. The presence of water inhibited the oligomerisation reaction. Extensive dimerisation and trimerisation occurred under a continuous air flow, whereas introduction of air pulses resulted in only a minor enhancement of trimerisation.

Original language	English
Pages (from-to)	567-572
Number of pages	6
Journal	JAOCS, Journal of the American Oil Chemists' Society
Volume	85
Issue number	6
DOIs	https://doi.org/10.1007/s11746-008-1229-7
Publication status	Published - 2008
MoE publication type	A1 Journal article-refereed

Keywords

Autoxidation
Linoleic acid
Polymerisation

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abstract = "Oligomerisation of technical grade linoleic acid was studied over a broad temperature range. Effects of water and air were specifically addressed. The products were analysed by size-exclusion chromatography to give directly the concentrations of dimers and trimers. Oligomerisation of technical grade linoleic acid was seen to be dependent on temperature and the activation energy for monomer disappearance was 109 kJ/mol. A phenomenological kinetic model was proposed for the linoleic acid oligomerisation giving good model predictions. The presence of water inhibited the oligomerisation reaction. Extensive dimerisation and trimerisation occurred under a continuous air flow, whereas introduction of air pulses resulted in only a minor enhancement of trimerisation.",

keywords = "Autoxidation, Linoleic acid, Polymerisation",

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T1 - Thermal polymerisation and autoxidation of technical grade linoleic acid

AU - Tolvanen, P.

AU - Mäki-Arvela, P.

AU - Eränen, K.

AU - Wärnå, J.

AU - Holmbom, B.

AU - Salmi, T.

AU - Murzin, D. Yu.

PY - 2008

Y1 - 2008

N2 - Oligomerisation of technical grade linoleic acid was studied over a broad temperature range. Effects of water and air were specifically addressed. The products were analysed by size-exclusion chromatography to give directly the concentrations of dimers and trimers. Oligomerisation of technical grade linoleic acid was seen to be dependent on temperature and the activation energy for monomer disappearance was 109 kJ/mol. A phenomenological kinetic model was proposed for the linoleic acid oligomerisation giving good model predictions. The presence of water inhibited the oligomerisation reaction. Extensive dimerisation and trimerisation occurred under a continuous air flow, whereas introduction of air pulses resulted in only a minor enhancement of trimerisation.

AB - Oligomerisation of technical grade linoleic acid was studied over a broad temperature range. Effects of water and air were specifically addressed. The products were analysed by size-exclusion chromatography to give directly the concentrations of dimers and trimers. Oligomerisation of technical grade linoleic acid was seen to be dependent on temperature and the activation energy for monomer disappearance was 109 kJ/mol. A phenomenological kinetic model was proposed for the linoleic acid oligomerisation giving good model predictions. The presence of water inhibited the oligomerisation reaction. Extensive dimerisation and trimerisation occurred under a continuous air flow, whereas introduction of air pulses resulted in only a minor enhancement of trimerisation.

KW - Autoxidation

KW - Linoleic acid

KW - Polymerisation

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JF - JAOCS, Journal of the American Oil Chemists' Society

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Thermal polymerisation and autoxidation of technical grade linoleic acid

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Keywords

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