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FTIR模式最符合含芳香酯的材料,并可能朝向对苯二甲酸型聚酯方向,而不是确定的单一化合物鉴定。样品在1714 cm-1处显示强酯羰基谱带,同时有1270、1115、1102和1015 cm-1处的多个C-O伸缩谱带,以及2943和2856 cm-1处的脂肪族C-H伸缩。725 cm-1处的谱带也与芳香酯系统中观察到的芳香环面外模式兼容。这与前15个谱库模式一致,该模式主要由聚(1,4-丁二醇对苯二甲酸酯)、对苯/间苯二甲酸聚酯和苯甲酸酯类酯构成。然而,谱库匹配置信度明显较低,所有列出的相似度均为0.000,并且没有直接参考或相关文献证据来确认该样品的特定命名聚合物。
推荐的后续步骤: Re-measure the FTIR spectrum with full spectral review, especially the 1600-1500 cm-1 aromatic ring region and the 1300-700 cm-1 fingerprint region, to look for terephthalate-specific band patterning. Compare the sample directly against authenticated spectra of Poly(1,4-butylene terephthalate), PET-type terephthalate polyesters, and isophthalate-containing polyesters. If the sample is a bulk solid or plastic, DSC can help test for a polyester such as PBT by checking for characteristic melting and crystallization behavior. If compositional confirmation is needed, pyrolysis-GC/MS or complementary Raman analysis would help distinguish a specific terephthalate polyester from other aromatic ester materials.
| 排名 | 匹配% | 化合物 | SMILES | 光谱编号 | 操作 |
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