Pahina ng Resulta

methacrylate / carboxyl

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Resulta Blg.: 20250731025017256224800 May-ari: publicuser Mga Komento: 1
Ulat ng Pagsusuri ng FTIR Kumpiyansa ng LLM

methacrylate / carboxyl

Mga Parameter ng Sample at Pagsukat

Ulat Blg. 20250731025017256224800
Petsa
Spectral Range (cm⁻¹) N/A
Baseline Pagwawasto ng baseline ng AsLS
Tugma sa library 29%

Resulta ng Pagkilala

29%

Ang FTIR spectrum ng sample ay pare-pareho sa isang methacrylate-based polymer o isang kaugnay na aliphatic ester material, na nagpapakita ng mga katangiang banda ng ester carbonyl (C=O) stretching, C-O stretching, aliphatic C-H stretching, at methyl deformation. Hindi napili ang FTIR In-Depth Interpretation para sa gawaing ito, kaya ang seksyong ito ay nagpapakita lamang ng resulta ng paghahanap sa aklatan at walang malalim na AI interpretation na pinatakbo.

Detalyadong interpretasyon

  • Nangungunang tugma ng aklatan: 2-Fluorophenol #19
  • The library search returned 2-Fluorophenol as the nearest match, but the extremely low similarity (0.0) and the lack of fluorine-characteristic bands indicate this is not the actual material; the chemical direction derived from the library consensus (methacrylate/carboxyl) is more reliable.
  • Some direct literature assignments, such as the asymmetric vibration at 1155 cm⁻¹ originally interpreted for PTFE [6], are not chemically compatible with the dominant ester pattern and are excluded from the final interpretation.
  • Without a definitive library match, the exact chemical identity cannot be determined; the material could be poly(methyl methacrylate) (PMMA), a related methacrylate copolymer, or a mixture of aliphatic esters.
  • The presence of minor amounts of other functional groups (e.g., residual acid, additives) cannot be ruled out based solely on these six peaks.
  • The direct evidence for the 1155 cm⁻¹ band remains ambiguous, with some sources attributing it to non-ester vibrations; its assignment to ester C-O is based on the overall spectral pattern rather than a single unequivocal reference.

Inirerekomendang susunod na hakbang: Compare the spectrum with a reference spectrum of poly(methyl methacrylate) (PMMA) to verify the backbone structure. Perform complementary analysis by pyrolysis-GC/MS to identify the monomer composition and confirm the methacrylate character. If quantification of ester content is needed, use the carbonyl band intensity with appropriate calibration.

Paghahambing ng Library

Ang spectrum ng Aklatan ay lalabas dito.

Mga Resulta ng Paghahanap sa Library — Nangungunang 15 na Kandidato

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Pagsusuri ng Peak

★ = Takdang suportado ng literatura
# Bilang ng alon (cm⁻¹) Absorbans Assignment Pagsipi Katayuan ng pagtatalaga
1 · 2993 1.00 - - -
2 · 2976 0.96 - - -
3 · 1749 0.56 - - -
4 · 1367 0.20 - - -
5 · 1168 0.15 - - -
6 · 1155 0.13 - - -

Appendix — Hilaw na Spectrum

Spektrum ng hilaw na sample
Binubuo ng FTIR.fun — Iulat #20250731025017256224800
Talakayan

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The above shows the FTIR analysis results of a png file uploaded by a user from Papua New Guinea. The original image and extracted CSV file are displayed below.1 - 副本.pngtem.csv

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