What absorbs at 2862 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 2862 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.

可能性のある官能基アサイン

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可能性のある材料

同じ文献プールがこのバンドと少なくとも1つの追加の特性ピークをサポートする場合にのみ、材料が表示されます。

スペクトルロジック

This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 2862 cm⁻¹ is usually not enough for material identification by itself.

実使用例

この種のクエリは、ポリマー識別、未知のプラスチックスクリーニング、QCトラブルシューティング、リサイクル材料の検証、および文献に基づいたピーク帰属のレビューで一般的です。

よくある間違い

• 少なくとも1～2つの支持ピークを確認せずに、1つの孤立したバンドを材料の証拠として扱うこと。
• 重複を無視: 複数の官能基が同じ波数付近に寄与することがあります。
• 添加剤、ブレンド、酸化、または汚染がスペクトルを歪める可能性がある場合に検証を省略すること。

検証アドバイス

曖昧さが残る場合は、特にブレンド、劣化サンプル、充填ポリマーについて、DSC、GC-MS、またはTGAで仮説を検証してください。

これらのアサインの根拠となる文献

• Alkyl C-H 信頼度 1.0

  “LLM confirmed rule peak-group candidate”

  Synthesis, Characterization, Drug Delivery, and Splinting Activity of Folic Acid Bridged Poly(E-caprolactone-co-tetrahydrofuran) DOI: 10.1080/00914037.2014.996711
• Alkyl C-H 信頼度 1.0

  “MCM-PS-TDI-C4S , which correspond to the phenyl and MCM-PS-TDI-C4 -CH2-., respectively, and methyl (CH3) methylene bridges 20 asymmetric stretching and symmetric vibrations at 2969 and 2862cm-1”

  Alahmadi 等 - 2013 - Preparation of Organic-Inorganic Hybrid Materials DOI: 10.1155/2013/634863
• Alkyl C-H 信頼度 1.0

  “- - - 2851-2860 CH methylene symmetric stretching 2859 2862 2859 C]O - 1632-1660 stretching amide I 1633 1633 1633 1633 1631 3.0 C-N”

  Facile synthesis of novel calcium silicate hydrated-nylon 6/66 nanocomposites by solution mixing method DOI: 10.1039/c8ra07116k
• Hydroxyl (O-H) 信頼度 1.0

  “Magnesium oxide and hydroxide are evicm-1 cm-1 2862 [29,30,32,33], 2839 and 2311 (Mg-O) [29,30,32,33], and 1447, 1026, 896, and denced by the bands at 3674 cm-1 (OH stretching in Mg-OH or Mg-O) [29,30,32,33], 2862 cm-1, 561 which are also i”

  Saharan Dust Storm Aerosol Characterization of the Event (9 to 13 May 2020) over European AERONET Sites DOI: 10.3390/atmos13030493
• Alkyl C-H 信頼度 1.0

  “In addition, these bands were 2926 cm-1 (asymmetrical C-H stretching vibration), 2862 cm-1 (CH2 stretching vibration), slightly shifted compared to glycerol, and their intensity decreased significantly.”

  Morphology and Selected Properties of Modified Potato Thermoplastic Starch DOI: 10.3390/polym15071762
• Acetate 信頼度 1.0

  “The The spectrum revealed that the polymers had five major common peaks: -NH stretching vibration peak spectrum revealed that the polymers had five major common peaks: -NH stretching vibration peak cm-1), cm-1), cm-1), (3333 CH stretching v”

  Synthesis and Properties of Novel Polyurethanes Containing Long-Segment Fluorinated Chain Extenders DOI: 10.3390/polym10111292
• Alkyl C-H 信頼度 1.0

  “The absorption band at 2862 cm-1 was ascribed to the C-H stretching cm-1 The spectrum of pure NaCMC shows a broad spectrum at 3345 due to the presence of -OH”

  Chitosan–Carboxymethylcellulose-Based Polyelectrolyte Complexation and Microcapsule Shell Formulation DOI: 10.3390/ijms19092521
• Alkyl C-H 信頼度 0.9

  “Explicit assignment: absorption peak at 2862 due to C-H stretching vibration.”

  Synthesis and Characterization of Tea Polyphenol–Coated Magnetite Nanoparticles for Hyperthermia Application DOI: 10.1007/s10948-019-05189-3