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United States Department of Agriculture

Agricultural Research Service

Title: Acid Catalyzed Synthesis of Hyperbranched Poly(glycerol-Diacid) Oligomers

Authors
item Wyatt, Victor
item Nunez, Alberto
item Foglia, Thomas
item Marmer, William

Submitted to: American Chemical Society National Meeting
Publication Type: Abstract Only
Publication Acceptance Date: December 22, 2005
Publication Date: N/A

Technical Abstract: Novel oligomeric prepolymers were synthesized by acid-catalyzed condensation of glycerol with iminodiacetic, azelaic, or succinic acid. The prepolymers were obtained, on average, in 62% yield and were characterized by 13C NMR, 1H NMR, MALDI-TOF mass spectrometry, and GPC. The synthesized oligomers had an average molecular weight of 1543 daltons (average PDI=1.34, average DOP= 5.5). Hyperbranching was evident in the products that employed azelaic acid and succinic acid as co-monomers with glycerol whereas the reaction between iminodiacetic acid and glycerol resulted in linear products bearing cyclic urethanes.

Last Modified: 9/10/2014
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