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普通FTIR证据不支持将顶部谱库匹配确认为具体材料。该谱图更安全地描述为含氧有机聚合物或涂层,显示宽羟基谱带、强脂肪族C-H伸缩、清晰羰基吸收和多个C-O区域谱带,仅对含胺化学有微弱间接支持。这种模式在化学上比领先的谱库名称更广泛,是当前证据中最可辩护的用户导向方向。
推荐的后续步骤: Verify whether the 1723 cm-1 band is intrinsic by repeating FTIR after careful cleaning and, if possible, collecting spectra from both surface and interior regions. Inspect the 1500-1600 cm-1 region and 3200-3500 cm-1 band shape at higher spectral quality to test for stronger amine or amide contributions. Compare against authenticated spectra of Poly(ethylenimine),epichlorohydrin modified, poly(vinyl alcohol), and poly(dimethylamine:epichlorohydrin) specifically, focusing on whether the carbonyl band persists. If composition certainty is important, use complementary methods such as ATR-FTIR replicate measurements, Raman spectroscopy, or elemental analysis for nitrogen and chlorine to evaluate amine/epichlorohydrin-related polymer chemistry.
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