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oxygenated organic polymer or polymeric coating with hydroxyl and carbonyl functionality

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結果編號: 20250505153334342219483 擁有者: Kamila 評論: 0
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FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250505153334342219483 Date: 2025-05-06 03:10:26 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 polymer or polymeric coating with hydroxyl and carbonyl functionality

General assessment
-
#30928 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. The sample directly supports hydroxyl-containing chemistry through the broad 3389-3405 cm-1 band.
  2. The 1723 cm-1 band directly supports a carbonyl-bearing component.
  3. The dense C-O fingerprint region supports an oxygenated polymeric or coating-like material.
Main limitation

The nearest library hit has zero reported similarity and therefore does not provide strong match confidence.

Evidence & interpretation
Evidence

Key evidence

資料庫主要匹配
Poly(vinyl alcohol) #30928 | match 0.0%
材料方向
oxygenated organic polymer or polymeric coating with hydroxyl and carbonyl functionality The FTIR pattern supports an oxygen-containing organic polymeric material rather than a secure assignment to a single named library compound. The sample shows a broad O-H band at 3389-3405 cm-1, aliphatic C-H stretching at 2852, 2919, and 2953 cm-1, a strong carbonyl band at 1723 cm-1, and multiple C-O region bands at 1002, 1027, 1068, 1112, and 1268 cm-1. Together these features are consistent with a hydroxyl- and carbonyl-containing polymer or coating. Although the nearest library name is Poly(vinyl alcohol), the evidence does not securely support that specific material because the observed 1723 cm-1 carbonyl band is not expected to dominate a simple poly(vinyl alcohol) spectrum.
Support

Evidence supporting the conclusion

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

  1. The FTIR pattern supports an oxygen-containing organic polymeric material rather than a secure assignment to a single named library compound. The sample shows a broad O-H band at 3389-3405 cm-1, aliphatic C-H stretching at 2852, 2919, and 2953 cm-1, a strong carbonyl band at 1723 cm-1, and multiple C-O region bands at 1002, 1027, 1068, 1112, and 1268 cm-1. Together these features are consistent with a hydroxyl- and carbonyl-containing polymer or coating. Although the nearest library name is Poly(vinyl alcohol), the evidence does not securely support that specific material because the observed 1723 cm-1 carbonyl band is not expected to dominate a simple poly(vinyl alcohol) spectrum.
  2. The sample directly supports hydroxyl-containing chemistry through the broad 3389-3405 cm-1 band.
  3. The 1723 cm-1 band directly supports a carbonyl-bearing component.
  4. The dense C-O fingerprint region supports an oxygenated polymeric or coating-like material.
  5. Several leading library candidates are oxygen-rich polymers or polymer additives, which is consistent with the observed O-H, C=O, and C-O bands.
  6. Broad absorption at 3389-3405 cm-1 supports hydrogen-bonded hydroxyl groups.
  7. Bands at 2852, 2919, and 2953 cm-1 indicate aliphatic C-H stretching from an organic backbone or side chains.
  8. A prominent band at 1723 cm-1 supports carbonyl functionality such as ester, acid, aldehyde, ketone, or oxidized polymer segments.
  9. Bands at 1002, 1027, 1068, 1112, and 1268 cm-1 are consistent with C-O stretching in alcohols, ethers, esters, or related oxygenated polymers.
  10. The lower-wavenumber pattern at 681, 737, 776, 869, and 947 cm-1 is not by itself sufficient here to define a unique polymer identity.
  11. The Top-15 library pattern is chemically mixed, but many candidates share oxygenated polymer functionality, including hydroxyl, carbonyl, and C-O linkages.
Limitations

Evidence that limits the conclusion

  • The nearest library hit has zero reported similarity and therefore does not provide strong match confidence.
  • A simple assignment to Poly(vinyl alcohol) is limited by the strong 1723 cm-1 carbonyl band, which suggests additional chemistry not required for that polymer.
  • The Top-15 library candidates are chemically diverse, including chlorinated, acidic, acetal, sulfonated, and other polymer types, so the retrieval does not converge on one specific structure.
  • No direct reference match or related literature match was recovered to narrow the assignment.
  • The current spectrum cannot distinguish whether the carbonyl arises from an ester-containing polymer, partially oxidized/polymer-blended material, plasticizer, or surface coating component.
  • The available evidence does not securely establish whether the sample is a single polymer, a copolymer, or a formulated mixture.
  • Bands below 1000 cm-1 are not sufficiently characteristic here to confirm halogenation, aromatic substitution pattern, or a specific repeat unit.
Recommendation

Suggested next verification

  • Compare the sample specifically against authenticated FTIR references for Poly(vinyl alcohol), poly(vinyl butyral), poly(acrylic acid), and ester-containing oxygenated polymers, focusing on the 1723 cm-1 carbonyl intensity and the 1000-1300 cm-1 C-O pattern.
  • If the sample is a coating, adhesive, or formulated film, examine extraction or separation of additives/plasticizers before repeat FTIR measurement to determine whether the carbonyl band comes from a secondary component.
  • Acquire complementary data such as Raman spectroscopy, DSC, or pyrolysis-GC/MS to determine whether the material is a single oxygenated polymer or a blend.
  • If practical, collect ATR-FTIR from multiple spots and, if possible, a transmission spectrum from a thin section to test whether the carbonyl-containing component is concentrated at the surface.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1002 1.00 - - - -
2 · 681 0.99 - - - -
3 · 737 0.97 - - - -
4 · 947 0.96 - - - -
5 · 1027 0.92 - - - -
6 · 869 0.91 - - - -
7 · 1419 0.85 - - - -
8 · 1112 0.82 - - - -
9 · 776 0.80 - - - -
10 · 1068 0.78 - - - -
11 · 1268 0.67 - - - -
12 · 2919 0.59 - - - -
13 · 1723 0.52 - - - -
14 · 2953 0.42 - - - -
15 · 2852 0.38 - - - -
16 · 3389 0.22 - - - -
17 · 3405 0.22 - - - -
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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