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该光谱与富含酯的脂肪族材料最一致,而不是有确定性的单一化合物。最强的观测特征是1743 cm-1处的羰基谱带,伴有1257、1179、1119和1066 cm-1处的多个C-O伸缩谱带以及2963和2873 cm-1处的脂肪族C-H谱带。这种模式支持脂肪族酯组成。谱库首要匹配是Poly(2-ethylhexyl acrylate),更广泛的前15模式也偏向酯、丙烯酸材料和聚酯类物质,但所有列出的相似度实际上为零,且没有独立的直接参考或相关文献证据确认该特定分配。因此,更广泛的酯基材料方向在化学上比明确实体鉴定更可支持。
推荐的后续步骤: Re-examine the full FTIR spectrum, especially band shapes and relative intensities in the 1800-900 cm-1 region, against authenticated acrylic ester polymer and polyester references. Check for additional features outside the current peak list, such as O-H, aromatic, or unsaturation-related bands, to determine whether the sample is a simple aliphatic ester polymer or a more complex formulation. If available, run ATR-FTIR with improved signal-to-noise and compare directly to reference spectra for Poly(2-ethylhexyl acrylate), butyl acrylate-containing copolymers, PMMA-acrylate copolymers, and polyester coating materials. Use complementary analysis such as pyrolysis-GC/MS, GC/MS of extractables, or DSC/TGA to distinguish a specific acrylic polymer from other ester-based coating or binder materials.
| 排名 | 匹配% | 化合物 | SMILES | 光谱编号 | 操作 |
|---|---|---|---|---|---|
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