TY - CONF A1 - Dasgupta, Sunanda A1 - Ay, Peter T1 - In-situ monitoring and induction time measurements during melt crystallization of plant based fatty acid mixtures in V-form reactor T2 - 6th Workshop on Fats and Oils as Renewable Feedstock for the Chemical Industry Karlsruhe, March 17–19, 2013 N2 - Enriched plant based unsaturated fatty acid mixtures are increasingly finding applications in various fields like those of production of bio-fuels and polymerization of epoxy resins. In the case of production of epoxy resins, they are highly advantageous due to the presence of multiple double bonds in the fatty acids which provide opportunities for cross linking by substitution. On the other hand, bio-fuels need raw materials with very low crystallization temperatures. This special property can also be attributed to these enriched unsaturated fractions due to their weak inter-molecular interactions owing to the kink in their structures. Melt crystallization has long been established as an optimal method for purification and enrichment of fractions from mixtures [1,2]. Previous studies have shown promising results with regard to enrichment of unsaturated fractions by melt crystallization processes [1]. Melt crystallization kinetics of two plant based poly-unsaturated fatty acid mixtures have been investigated in this study [3]. A high oleic and a high linoleic fatty acid mixture were chosen for comparison purposes. A V-form reactor was developed for optimal in-situ analysis with the help of the focused beam reflectance measurement (FBRM®, Mettler Toledo Ltd., Switzerland) instrument [3]. Enhanced heat transfer especially to deal with the heat given out during crystallization was enabled through minimal volume of sample, optimized mixing and the special shape of the reactor. Important parameters like induction time, mixing speed, etc have been determined and compared as functions of degree of supercooling and composition of PUFA mixtures. In accordance to theory, the induction times in both the cases decreased with increasing supercooling and mixer speed. On the other hand, the high linoleic fatty acid mixture required much higher supercooling (4.4K to 5.4K) than the high oleic mixture (2.2K to 3.2K) for favorable induction times. KW - FBRM, PUFA Y1 - 2015 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/14546 UR - https://www.researchgate.net/publication/265109649_In-situ_monitoring_and_induction_time_measurements_during_melt_crystallization_of_plant_based_fatty_acid_mixtures_in_V-form_reactor PB - abiosus e.V. Conferences CY - Karlsruhe, Germany ER -