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

Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review

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Sammanfattning

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.

Originalspråk	Engelska
Sidor (från-till)	567-572
Antal sidor	6
Tidskrift	JAOCS, Journal of the American Oil Chemists' Society
Volym	85
Nummer	6
DOI	https://doi.org/10.1007/s11746-008-1229-7
Status	Publicerad - 2008
MoE-publikationstyp	A1 Tidskriftsartikel-refererad

Finansiering

Acknowledgments This work is part of the activities at the Åbo Akademi Process Chemistry Centre (ÅA-PCC) within the Finnish Centre of Excellence Programme (2000–2011) appointed by the Academy of Finland. The authors acknowledge J. Hemming for his help in performing SEC-analyses.

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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.",

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AU - Tolvanen, P.

AU - Mäki-Arvela, P.

AU - Eränen, K.

AU - Wärnå, J.

AU - Holmbom, B.

AU - Salmi, T.

AU - Murzin, D. Yu.

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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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JO - 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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