RESULT PAGE
aromatic polyester, likely a copolyester such as poly(ethylene terephthalate) (PET) with possible methacrylate/acetate comonomer or plasticizer residues
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FTIR Analysis Report
Low confidence
aromatic polyester, likely a copolyester such as poly(ethylene terephthalate) (PET) with possible methacrylate/acetate comonomer or plasticizer residues
Sample & Measurement Parameters
Report No.
20251106110224654830981
Date
Spectral Range (cm⁻¹)
N/A
Baseline
ALS
Confidence
29%
Identification Result
29%The sample exhibits spectral features characteristic of an aromatic polyester, with strong evidence for terephthalate ester and aliphatic chain components. The pattern closely matches published assignments for copolyester films, supporting an aromatic polyester material, though the presence of minor nitrogen‑related absorptions suggests the material is not a pure homopolymer 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.
Library Comparison
Library spectrum will appear here.
Library Search Results — Top 15 Candidates
| Rank | Match % | Compound | Formula / SMILES | Library Preview | Action |
|---|---|---|---|---|---|
| Loading library candidates... | |||||
Peak Analysis
★ = Literature-supported assignment| # | Wavenumber (cm⁻¹) | Absorbance | Assignment | Citation | Confidence | |
|---|---|---|---|---|---|---|
| 1 | · | 2925 | 1.00 | - | - | - |
| 2 | · | 1383 | 0.94 | - | - | - |
| 3 | · | 1174 | 0.87 | - | - | - |
| 4 | · | 1272 | 0.79 | - | - | - |
| 5 | · | 720 | 0.78 | - | - | - |
| 6 | · | 1459 | 0.73 | - | - | - |
| 7 | · | 1599 | 0.72 | - | - | - |
| 8 | · | 2858 | 0.71 | - | - | - |
| 9 | · | 822 | 0.66 | - | - | - |
| 10 | · | 1551 | 0.66 | - | - | - |
| 11 | · | 1021 | 0.65 | - | - | - |
| 12 | · | 962 | 0.65 | - | - | - |
| 13 | · | 1730 | 0.60 | - | - | - |
| 14 | · | 1699 | 0.56 | - | - | - |
| 15 | · | 2163 | 0.11 | - | - | - |
Appendix — Raw Spectrum
Discussion
Comments and follow-up evidence
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