Modification of Hardwood Tall Oil

Complete text of the article:

Download article (pdf, 0.8MB )

UDС

668.473

DOI:

Abstract

One of the ways to modify tallow products is dimerization (polymerization). We have studied dimerization of linoleic acid – key component of hardwood tall oil – and the oil itself with zinc chloride at the temperature of 120–140 °C. The products obtained were analyzed using high resolution mass spectrometer Bruker microTOF HR MS (ESI) and 1H-NMR spectroscopy. The mathematical model of linoleic acid dimerization by the action of zinc chloride was developed using tri-factorial second-order B-design. Under optimal conditions at the temperature of 140 °C, heating time of 5 hours and addition of 10 % zinc chloride, unsaturated tall oil fatty acids converted into dimers by 91–97 %.

Authors

H.P. Trinh, Postgraduate Student; G.I. Tsarev, Agsociate Professor; V.I. Roshchin, Doctor of Chemistry, Professor

Affiliation

St. Petersburg State Forest Technical University named after S.M. Kirov

Keywords

tall oil, tall oil fatty acids, dimerization, linoleic acid.

References

1. Bogomolov B.D. Pererabotka sul'fatnogo i sul'fitnogo shcheloka [Sulfate and Sulfite Lye Processing]. Moscow: Lesnaja Promyshlennost 1989. 360 p. 2. Pizhurin A.A. Osnovy nauchnykh issledovaniy v derevoobrabotke [Fundamentals of Research in Woodworking]. Moscow: MGUL, 2005. 305 p. 3. Smid V.A., Dil'man A.D. Osnovy sovremennogo organicheskogo sinteza [Fundamentals of Modern Organic Synthesis]. Moscow: BINOM. Laboratorija znanij, 2009. 750 p. 4. Tsarev G.I., Nekrasova V.B. Pobochnye produkty proizvodstva sul'fatnoy tsellyulozy i ikh ispol'zovanie pri poluchenii drevesnykh plit: obzor. inform. [By-Products of Sulfate Pulp Production and Their Use for Wood Boards: Overview Information]. Moscow: VNIPIEIlesprom, 1985. 40 p. 5. Breuer T.E. Dimer Acids. Van Nostrand's Encyclopedia of Chemistry. New York, 2005. 1856 p.