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ARS Home » Midwest Area » Peoria, Illinois » National Center for Agricultural Utilization Research » Bio-oils Research » Research » Publications at this Location » Publication #358911

Research Project: Replacement of Petroleum Products Utilizing Off-Season Rotational Crops

Location: Bio-oils Research

Title: Thermal behavior of polyformates of milkweed and soybean oils

item Harry O Kuru, Rogers
item Biresaw, Girma
item Xu, Jingyuan - James

Submitted to: Society of Tribologists and Lubrication Engineers
Publication Type: Abstract Only
Publication Acceptance Date: 5/19/2019
Publication Date: 5/19/2019
Citation: Harry O Kuru, R.E., Biresaw, G., Xu, J. 2019. Thermal behavior of polyformates of milkweed and soybean oils [abstract]. Society of Tribologists and Lubrication Engineers Annual Meeting & Exhibition.

Interpretive Summary:

Technical Abstract: Reprocessing of neat vicinal polyformate esters of milkweed and soybean triglycerides in a silica drying column with mild heating resulted in a light reddish-orange gel formation of the column eluate on cooling. Analysis of the gel by 1H- and 13C-NMR showed products of possible elimination which include olefinic/aromatic moieties following possible elimination and rearrangement. A free carboxyl moiety in the gel matrix was observed. FT-IR of the gel suggested formation of olefinic species. Trial runs to reproduce the column results by heating aliquots of the neat vicinal polyformate under N2 with and without silica gel generated a gas that discharged basic phenolphthalein solution. Further heating gave a tacky off-white polymer that was chloroform insoluble. In contrast, the vicinal polyacetate derivatives of milkweed and soybean oils were stable under similar reaction conditions. From the rheological similarity of their power law exponents, 0.63 and 0.70, respectively, MWF gel and SoyF gel can have similar behavior during processing.