Aromatic, oxygenated polymer with ester/carboxylic acid and amine/hydroxyl groups
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Aromatic, oxygenated polymer with ester/carboxylic acid and amine/hydroxyl groups
Sample & Measurement Parameters
Identification Result
75%The FTIR spectrum indicates an aromatic, oxygenated polymer exhibiting strong ester/carboxylic acid carbonyl near 1734 cm-1, C-O-C ether stretching at 1096 cm-1, aromatic ring vibrations at 1557 and out-of-plane bending at 669, 730, 802 cm-1, aliphatic C-H stretches in the 2846–2978 cm-1 region, and a broad O-H/N-H envelope centered around 3397 cm-1. While the spectral library best matches Poly(methyl vinyl ether:maleic acid), the clear aromatic absorption pattern suggests a more complex aromatic-containing structure FTIR In-Depth Interpretation was not selected for this task, so this section shows the library-search result only and no deep AI interpretation was run.
Detailed interpretation
- Top library match: Poly(methyl vinyl ether:maleic acid) #16203
- The top library match, Poly(methyl vinyl ether:maleic acid), lacks aromatic rings, which are clearly present in the spectrum; this mismatch suggests the sample may be a blend or a different aromatic copolymer not represented in the library.
- The exact structure remains uncertain; the broad O-H/N-H region could originate from acid, phenol, or amine/amide groups, and the specific types of aromatic substitution cannot be identified solely from FTIR.
Library Comparison
Library Search Results — Top 15 Candidates
| Rank | Match % | Compound | SMILES | Spectrum No. | Action |
|---|---|---|---|---|---|
| Loading library candidates... | |||||
Peak Analysis
★ = Literature-supported assignment| # | Wavenumber (cm⁻¹) | Absorbance | Assignment | Citation | Assignment status | |
|---|---|---|---|---|---|---|
| 1 | · | 1096 | 1.00 | - | - | - |
| 2 | · | 1180 | 0.99 | - | - | - |
| 3 | · | 1132 | 0.91 | - | - | - |
| 4 | · | 802 | 0.73 | - | - | - |
| 5 | · | 669 | 0.71 | - | - | - |
| 6 | · | 1734 | 0.65 | - | - | - |
| 7 | · | 1257 | 0.65 | - | - | - |
| 8 | · | 956 | 0.62 | - | - | - |
| 9 | · | 730 | 0.62 | - | - | - |
| 10 | · | 1557 | 0.59 | - | - | - |
| 11 | · | 1416 | 0.51 | - | - | - |
| 12 | · | 1367 | 0.47 | - | - | - |
| 13 | · | 1472 | 0.44 | - | - | - |
| 14 | · | 1290 | 0.44 | - | - | - |
| 15 | · | 1637 | 0.41 | - | - | - |
| 16 | · | 2846 | 0.34 | - | - | - |
| 17 | · | 2913 | 0.27 | - | - | - |
| 18 | · | 2372 | 0.24 | - | - | - |
| 19 | · | 3279 | 0.22 | - | - | - |
| 20 | · | 3296 | 0.22 | - | - | - |
| 21 | · | 2503 | 0.21 | - | - | - |
| 22 | · | 3429 | 0.21 | - | - | - |
| 23 | · | 3316 | 0.21 | - | - | - |
| 24 | · | 2760 | 0.21 | - | - | - |
| 25 | · | 3540 | 0.21 | - | - | - |
| 26 | · | 3190 | 0.21 | - | - | - |
| 27 | · | 2738 | 0.20 | - | - | - |
| 28 | · | 3136 | 0.20 | - | - | - |
| 29 | · | 3465 | 0.20 | - | - | - |
| 30 | · | 3238 | 0.20 | - | - | - |
| 31 | · | 3747 | 0.20 | - | - | - |
| 32 | · | 3397 | 0.20 | - | - | - |
| 33 | · | 3562 | 0.20 | - | - | - |
| 34 | · | 3172 | 0.19 | - | - | - |
| 35 | · | 3671 | 0.19 | - | - | - |
| 36 | · | 3031 | 0.19 | - | - | - |
| 37 | · | 3604 | 0.18 | - | - | - |
| 38 | · | 2978 | 0.18 | - | - | - |
| 39 | · | 3864 | 0.18 | - | - | - |
| 40 | · | 3798 | 0.17 | - | - | - |
| 41 | · | 3821 | 0.17 | - | - | - |
| 42 | · | 3655 | 0.17 | - | - | - |
| 43 | · | 3763 | 0.17 | - | - | - |
| 44 | · | 3703 | 0.17 | - | - | - |
| 45 | · | 2944 | 0.12 | - | - | - |
Appendix — Raw Spectrum
Comments and follow-up evidence
Use this area to continue the interpretation, ask questions, or add extra verification evidence.