Poly(methyl vinyl ether:maleic acid)
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Poly(methyl vinyl ether:maleic acid)
Material direction: acid-functional copolymer of methyl vinyl ether and maleic acid
Sample & Measurement Parameters
Identification Result
75%The sample is identified as poly(methyl vinyl ether:maleic acid), a copolymer containing pendant carboxylic acid groups and vinyl ether backbone linkages. A strong carbonyl stretch and broad hydroxyl envelope confirm the acid functionality, while prominent C-O-C bands are consistent with the vinyl ether structure. The overall spectral pattern matches the library reference with moderate confidence 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 library direction label suggests an aromatic/amide character; however, the dominant spectral features (strong acid carbonyl, ether bands, aliphatic C–H) do not require an aromatic/amide contribution, and the top‑1 candidate itself is non‑aromatic.
- The 956 cm−1 band indicative of trans alkene C–H may originate from a minor unsaturated impurity or cross‑linking, which is not expected in the nominal polymer structure; its exact origin remains uncertain.
- The broad O–H absorption may include contributions from absorbed water, slightly complicating the quantification of carboxylic acid content.
- Library confidence is moderate (75%), and a few high‑rank library entries contain boron or aromatic structures, though these are not supported by the dominant spectral evidence.
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 | · | 3562 | 0.20 | - | - | - |
| 32 | · | 3747 | 0.20 | - | - | - |
| 33 | · | 3397 | 0.20 | - | - | - |
| 34 | · | 3172 | 0.19 | - | - | - |
| 35 | · | 3671 | 0.19 | - | - | - |
| 36 | · | 3031 | 0.19 | - | - | - |
| 37 | · | 3604 | 0.18 | - | - | - |
| 38 | · | 3988 | 0.18 | - | - | - |
| 39 | · | 2978 | 0.18 | - | - | - |
| 40 | · | 3864 | 0.18 | - | - | - |
| 41 | · | 3798 | 0.17 | - | - | - |
| 42 | · | 3821 | 0.17 | - | - | - |
| 43 | · | 3655 | 0.17 | - | - | - |
| 44 | · | 3898 | 0.17 | - | - | - |
| 45 | · | 3941 | 0.17 | - | - | - |
| 46 | · | 3763 | 0.17 | - | - | - |
| 47 | · | 3703 | 0.17 | - | - | - |
| 48 | · | 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.