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譜庫最高匹配為聚(乙烯亞胺),環氧氯丙烷修飾,但整體匹配強度非常弱,且無直接或相關文獻證據獨立確認該特定材料。觀察到的FTIR圖樣更安全地描述為含氮脂肪族聚合物材料,顯示在3294 cm⁻¹ 附近的N-H/O-H伸縮帶、2922和2853 cm⁻¹ 的脂肪族C-H譜帶、1645 cm⁻¹ 附近與胺相關彎曲和/或結合水貢獻一致的譜帶,以及在1226和1034 cm⁻¹ 的強指紋區吸收,可對應C-N和/或C-O單鍵振動。由於頂級譜庫模式也包括聚乙烯醇、聚環氧乙烷和環氧氯丙烷/環氧乙烷相關聚合物,可防禦的結論是較廣泛的含胺脂肪族聚合物方向,而非對命名譜庫化合物的確定歸屬。
建議的下一步: Re-run the FTIR spectrum with improved background correction and drying of the sample to assess whether the 3294 and 1645 cm-1 bands decrease, which would help separate true N-H/O-H functionality from moisture effects. Inspect the 1200-900 cm-1 region at higher spectral quality, since resolving the relative strengths and shapes of the 1226 and 1034 cm-1 bands may help distinguish C-N-rich from C-O-rich polymers. If available, compare against authenticated spectra of Poly(ethylenimine),epichlorohydrin modified, poly(vinyl alcohol), and poly(ethylene oxide) measured under the same conditions. Use a complementary method such as elemental analysis or XPS to test for nitrogen; confirmation of nitrogen would strongly favor the amine-containing polymer direction over oxygen-only candidates such as poly(vinyl alcohol) or poly(ethylene oxide).
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