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EREDMÉNY OLDAL

oxygenated organic material with ester-like carbonyl and C-O bands, plausibly polyester-like

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Eredmény száma: 20250505154440448522469 Tulajdonos: Kamila Hozzászólások: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250505154440448522469 Date: 2025-05-06 03:28:34 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

oxygenated organic material with ester-like carbonyl and C-O bands, plausibly polyester-like

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Conclusion
  1. 1725 cm-1 is consistent with an ester-like carbonyl absorption.
  2. 1274-1281 cm-1 and 1122-1036 cm-1 are consistent with multiple C-O stretching bands expected for oxygenated ester-containing materials.
  3. The library top name is POLYESTER, and another leading candidate is Polyethylene Teraphalate, supporting a polyester-like direction at a broad level.
Evidence & interpretation
Evidence

Key evidence

Könyvtár vezető egyezés
POLYESTER #29721
Limitations

Evidence that limits the conclusion

  • The library match quality is very weak: reported similarities are 0.000, S-O the retrieval does not provide a reliable specific identification.
  • The Top-15 candidate pattern is chemically mixed and includes unrelated materials, S-O its consensus is not strong enough to support a narrow assignment.
  • The sample evidence does not provide clear support for sulfur-oxide or chlorine-containing chemistry despite those groups appearing in parts of the library feature list.
  • A broad band at 3415 cm-1 is not a defining feature of many common dry polyesters and may indicate moisture, hydroxyl-containing additives, degradation, or contamination.
  • The current peak list supports ester-containing organic chemistry, but it does not securely distinguish among polyester, oxidized coating/binder material, or a mixed oxygenated organic sample.
Recommendation

Suggested next verification

  • Recollect the FTIR spectrum with improved signal quality and full baseline control, especially in the carbonyl and fingerprint regions, to test whether the ester pattern is reproducible.
  • Inspect the sample for moisture or surface contamination and, if feasible, dry or clean the sample before rerunning FTIR to assess whether the 3415 cm-1 band decreases.
  • Compare the sample directly against authenticated spectra of common polyester materials relevant to the sample context, including PET and other ester-containing binders or coatings.
  • If the application allows, use complementary methods such as Raman spectroscopy, DSC, or pyrolysis-GC/MS to determine whether the sample is truly a polyester polymer or a broader oxygenated organic mixture.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

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Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1409 1.00 - - - -
2 · 870 0.76 - - - -
3 · 1274 0.50 - - - -
4 · 1281 0.50 - - - -
5 · 1122 0.48 - - - -
6 · 956 0.47 - - - -
7 · 704 0.47 - - - -
8 · 1072 0.46 - - - -
9 · 737 0.43 - - - -
10 · 1036 0.39 - - - -
11 · 1725 0.23 - - - -
12 · 2927 0.19 - - - -
13 · 3415 0.13 - - - -
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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
Megbeszélés

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