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carbonyl-containing ester material, plausibly an acrylate- or polyester-type composition

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№ результата: 20250722000900659368613 Владелец: publicuser Комментарии: 1
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250722000900659368613 Date: 2025-07-23 02:14:16 Reported by: FTIR.fun Contact: [email protected]

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Top15

Similarity-ranked Top-15 library comparison

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Top 15 candidates

Reference library candidates

Rank Match % Compound Name Formula / SMILES Library preview Action
Reference candidates load with this Top-15 workbench.

Based on the library matches and evidence above.

Conclusion

carbonyl-containing ester material, plausibly an acrylate- or polyester-type composition

General assessment
-
#347 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. 1719-1727 cm⁻¹ supports the presence of a carbonyl group in an ester-like region.
  2. 1113 cm⁻¹ is consistent with ester C-O stretching.
  3. 2844 cm⁻¹ is compatible with aliphatic hydrocarbon content.
Main limitation

The library confidence is low, with no meaningful separation among candidates.

Evidence & interpretation
Evidence

Key evidence

Основное совпадение из библиотеки
Poly(ethyl acrylate) #347 | match 0.0%
Направление материала
carbonyl-containing ester material, plausibly an acrylate- or polyester-type composition The spectrum is most consistent with a carbonyl-containing ester material, with the library placing Poly(ethyl acrylate) as the nearest named candidate. However, the overall match strength is very weak and there is no direct reference or related-literature support to justify a firm material assignment. The observed bands support a broad ester-containing organic composition, plausibly within an acrylate- or polyester-like direction, but the present evidence is not sufficient to confirm Poly(ethyl acrylate) specifically.
Support

Evidence supporting the conclusion

Only sample-relevant statements that support the present conclusion are shown here.

  1. The spectrum is most consistent with a carbonyl-containing ester material, with the library placing Poly(ethyl acrylate) as the nearest named candidate. However, the overall match strength is very weak and there is no direct reference or related-literature support to justify a firm material assignment. The observed bands support a broad ester-containing organic composition, plausibly within an acrylate- or polyester-like direction, but the present evidence is not sufficient to confirm Poly(ethyl acrylate) specifically.
  2. 1719-1727 cm⁻¹ supports the presence of a carbonyl group in an ester-like region.
  3. 1113 cm⁻¹ is consistent with ester C-O stretching.
  4. 2844 cm⁻¹ is compatible with aliphatic hydrocarbon content.
  5. The leading library names include Poly(ethyl acrylate), Poly(1,4-butylene adipate), acrylic polymer, and other ester-bearing compounds, indicating a recurring ester/carbonyl pattern.
  6. A strong band pair at 1719-1727 cm⁻¹ is characteristic of an ester-like carbonyl stretching region.
  7. The band at 1113 cm⁻¹ supports C-O stretching expected in ester-containing materials.
  8. Bands at 2844 and 2740 cm⁻¹ indicate aliphatic C-H stretching, consistent with an organic ester framework.
  9. The Top-15 library pattern is dominated by ester, carbonyl, acrylate-polymer, and polyester entries, which broadly supports an ester-rich material direction.
  10. Although Poly(ethyl acrylate) is the top library name, all listed similarities are effectively non-discriminating, S-O the retrieval does not securely distinguish that polymer from other ester-containing candidates.
Limitations

Evidence that limits the conclusion

  • The library confidence is low, with no meaningful separation among candidates.
  • No related-literature match was recovered to support a specific polymer or small-molecule identity.
  • The limited peak set does not provide distinctive bands needed to securely identify Poly(ethyl acrylate) over other ester-containing materials.
  • It remains unclear whether the sample is specifically Poly(ethyl acrylate), another acrylic polymer, a polyester, or a lower-molecular-weight ester-containing substance.
  • The feature at 2740 cm⁻¹ is not by itself sufficient to define a unique structure in the absence of stronger corroborating bands.
  • Additional characteristic fingerprint-region information would be needed to separate acrylate polymers from other ester-rich materials.
Recommendation

Suggested next verification

  • Recollect or inspect the full FTIR spectrum, especially the 1500-600 cm⁻¹ fingerprint region, to verify ester C-O-C band patterning and look for polymer-specific backbone features.
  • Compare the sample directly against authenticated spectra of Poly(ethyl acrylate), a generic acrylic polymer, and representative aliphatic polyesters such as poly(butylene adipate).
  • If the sample is a coating, adhesive, or extractable residue, run complementary analysis such as ATR-FTIR repeat measurement, DSC, or Py-GC/MS to distinguish an acrylate polymer from a polyester or small-molecule ester.
  • Check for repeatable carbonyl peak shape and position across replicate measurements, since ester subclass assignment often depends on the detailed carbonyl and C-O band profile.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1727 1.00 - - - -
2 · 1719 0.70 - - - -
3 · 1350 0.27 - - - -
4 · 1113 0.22 - - - -
5 · 1427 0.20 - - - -
6 · 2844 0.16 - - - -
7 · 2740 0.15 - - - -
Appendix

Sample information and raw spectrum

Original uploaded spectrum for reference and verification.

Baseline correction method: Asymmetric Least Squares Smoothing

The wavelength range for analysis(cm-1): [(650, 4000)]

Raw spectrum without baseline correction or other processing:

Sample spectrum image
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  • 23 Июл '25

The above shows the FTIR analysis results of a doc file uploaded by a user from CANADA. The original image and extracted CSV file are displayed below.20250723091131.pngtem.csv

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