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International Journal of Analytical Chemistry
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International Journal of Analytical Chemistry
/
2011
/
Article
/
Tab 1
/
Research Article
Analysing the Temperature Effect on the Competitiveness of the Amine Addition versus the Amidation Reaction in the Epoxidized Oil/Amine System by MCR-ALS of FTIR Data
Table 1
Assignment of the absorption bands in the FTIR-ATR spectra (see Figure
1
).
Origin
Wavenumber (cm
−1
)
Assignment
C–O–
1276
Epoxy and oxirane ring
C–N
1310
Aromatic tertiary amine, CN stretching
C–N
1364
Aromatic tertiary amine, CN stretching
N–H
1500–1600
Secondary amine, NH bending
N–H
1624
Primary amine, NH bending
C=O
1650–1700
Amide, CO stretching
C=O
1740
Ester, CO stretching
CH
2
–
2800–3050
Methylene, CH stretching
N–H
3370
Primary amine, NH stretching
N–H
3460
Primary amine, NH stretching
O–H
3500–3650
Hydroxy group, OH stretching