Location: Bio-oils ResearchTitle: Thermal behavior of polyformates of milkweed and soybean oils
|Harry O Kuru, Rogers|
|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.
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.