Synthesis and characterization by infrared spectroscopy of hydantoin-based bonding agents, used in composite propellants
doi: 10.5028/jatm.2009.0102177184

Darci C. Pires
Institute of Aeronautics and Space
São José dos Campos - Brazil
cortes@iae.cta.br

Denise V. B. Stockler-Pinto
Institute of Aeronautics and Space
São José dos Campos - Brazil
denisestockler@iae.cta.br

Jairo Sciamareli
Institute of Aeronautics and Space
São José dos Campos - Brazil
sciamareli@iae.cta.br

Jorge Roberto da Costa
Institute of Aeronautics and Space
São José dos Campos - Brazil
jorge.costa@iae.cta.br

Milton Faria Diniz
Institute of Aeronautics and Space
São José dos Campos - Brazil
miltond@iae.cta.br

Koshun Iha
Technological Institute of Aeronautics
São José dos Campos - Brazil
Koshun@ita.br

Rita de Cássia L. Dutra*
Institute of Aeronautics and Space
São José dos Campos - Brazil
chefia.aqi@iae.cta.br

*author for correspondence

Abstract:

Reactions to obtain hydantoin derivatives were carried out with 5,5-dimethylhydantoin and short-chain aldehydes. Monitoring of the reactions was performed using qualitative mid-infrared spectroscopy (MIR) through the formation of new bands characteristic of the desired product. MIR analysis showed that these spectrometric alterations occur only in the reaction with the formaldehyde, indicating the formation of the desired product, 1,3-bis (hydroxymethyl) 5,5-dimethylhydantoin, in the presence of water. The absorption bands that confirmed the reaction were observed at 3334 cmˉ¹ (Ʋ OH), 1770 and 1710 cmˉ¹ (Ʋ C=O) and 1056 cmˉ¹ (Ʋ C-O), the last of which is assigned to the group containing primary hydroxyl.

Keywords:

Hydantoin, Synthesis, Characterization, MIR, Composite propellant.