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EREDMÉNY OLDAL

oxygenated organic polymer or coating with hydroxyl-containing aliphatic structure and possible amine functionality

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Eredmény száma: 20250505153422695772192 Tulajdonos: Kamila Hozzászólások: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250505153422695772192 Date: 2025-05-06 03:23:54 Reported by: FTIR.fun Contact: [email protected]

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Top15

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Top 15 candidates

Reference library candidates

Rank Match % Compound Name Formula / SMILES Library preview Action
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Based on the library matches and evidence above.

Conclusion

oxygenated organic polymer or coating with hydroxyl-containing aliphatic structure and possible amine functionality

General assessment
-
#7725 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. The measured peaks directly support hydroxyl-rich and oxygenated organic functionality through the 3402, 1278, 1122, and 1076 cm-1 bands.
  2. The 2925 and 2855 cm-1 pair supports an aliphatic polymeric or coating-like organic backbone.
  3. The library shortlist includes oxygenated and amine-containing polymers such as poly(vinyl alcohol), poly(ethylenimine), and epichlorohydrin-modified amine polymers, which is broadly consistent with an oxygenated polymer direction.
Main limitation

The library match quality is extremely weak, with the leading candidates all reported at 0.000 similarity, so the top hit cannot be treated as a reliable material identification.

Evidence & interpretation
Evidence

Key evidence

Könyvtár vezető egyezés
Poly(ethylenimine),epichlorohydrin modified #7725 | match 0.0%
Anyag iránya
oxygenated organic polymer or coating with hydroxyl-containing aliphatic structure and possible amine functionality The ordinary FTIR evidence does not support a firm assignment to the top library hit as a specific material. The spectrum is more safely described as an oxygenated organic polymer or coating showing a broad hydroxyl band, strong aliphatic C-H stretching, a clear carbonyl absorption, and multiple C-O region bands, with only weak indirect support for amine-containing chemistry. This pattern is chemically broader than the leading library name and is the most defensible user-facing direction from the present evidence.
Support

Evidence supporting the conclusion

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

  1. The ordinary FTIR evidence does not support a firm assignment to the top library hit as a specific material. The spectrum is more safely described as an oxygenated organic polymer or coating showing a broad hydroxyl band, strong aliphatic C-H stretching, a clear carbonyl absorption, and multiple C-O region bands, with only weak indirect support for amine-containing chemistry. This pattern is chemically broader than the leading library name and is the most defensible user-facing direction from the present evidence.
  2. The measured peaks directly support hydroxyl-rich and oxygenated organic functionality through the 3402, 1278, 1122, and 1076 cm-1 bands.
  3. The 2925 and 2855 cm-1 pair supports an aliphatic polymeric or coating-like organic backbone.
  4. The library shortlist includes oxygenated and amine-containing polymers such as poly(vinyl alcohol), poly(ethylenimine), and epichlorohydrin-modified amine polymers, which is broadly consistent with an oxygenated polymer direction.
  5. Possible amine functionality remains plausible because the leading library candidates include amine-rich polymers and the broad 3402 cm-1 band could include N-H contribution.
  6. A broad band near 3402 cm-1 supports hydroxyl and/or hydrogen-bonded N-H containing functionality.
  7. Bands at 2925 and 2855 cm-1 indicate aliphatic C-H stretching from saturated carbon chains or polymer backbones.
  8. A strong absorption at 1723 cm-1 supports a carbonyl-containing component, which is an important feature of the sample.
  9. Bands at 1278, 1122, and 1076 cm-1 are consistent with C-O stretching in alcohol, ether, ester, or related oxygenated polymer functionality.
  10. Lower-wavenumber features at 958, 875, 744, and 686 cm-1 are not by themselves specific enough to secure the top library identity.
  11. The Top-15 library pattern contains several oxygenated and/or nitrogen-containing polymer candidates, so the broader direction of an oxygenated polymer matrix is more consistent than a single specific named polymer.
Limitations

Evidence that limits the conclusion

  • The library match quality is extremely weak, with the leading candidates all reported at 0.000 similarity, so the top hit cannot be treated as a reliable material identification.
  • The clear carbonyl band at 1723 cm-1 limits confidence in assigning the sample specifically to Poly(ethylenimine),epichlorohydrin modified, because the present evidence set does not show a stronger direct basis for that exact named material.
  • The suggested library consensus of methyl / nitrogen heterocycle is not strongly secured by the observed peak list, which more clearly supports oxygenated functionality than a distinct nitrogen heterocycle.
  • It remains uncertain whether the carbonyl belongs to an ester, urethane, oxidized additive, residual processing aid, or a mixed-material surface layer.
  • The broad 3402 cm-1 band cannot presently distinguish cleanly between predominantly hydroxyl absorption and overlapping hydroxyl/N-H absorption.
  • The low-wavenumber bands do not uniquely establish aromatic substitution, halogenation, or a specific ring system from the present data alone.
  • The sample may be a blend, modified polymer, coating, or contaminated surface rather than a single pure material.
Recommendation

Suggested next verification

  • Verify whether the 1723 cm-1 band is intrinsic by repeating FTIR after careful cleaning and, if possible, collecting spectra from both surface and interior regions.
  • Inspect the 1500-1600 cm-1 region and 3200-3500 cm-1 band shape at higher spectral quality to test for stronger amine or amide contributions.
  • Compare against authenticated spectra of Poly(ethylenimine),epichlorohydrin modified, poly(vinyl alcohol), and poly(dimethylamine:epichlorohydrin) specifically, focusing on whether the carbonyl band persists.
  • If composition certainty is important, use complementary methods such as ATR-FTIR replicate measurements, Raman spectroscopy, or elemental analysis for nitrogen and chlorine to evaluate amine/epichlorohydrin-related polymer chemistry.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 958 0.99 - - - -
2 · 1421 0.98 - - - -
3 · 875 0.87 - - - -
4 · 1122 0.87 - - - -
5 · 686 0.86 - - - -
6 · 1076 0.81 - - - -
7 · 744 0.80 - - - -
8 · 1278 0.76 - - - -
9 · 1723 0.47 - - - -
10 · 2925 0.38 - - - -
11 · 2855 0.27 - - - -
12 · 3402 0.27 - - - -
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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