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FTIR圖譜最符合以C-O鍵結為主的含氧脂肪族材料,大致趨向聚醚類或二醇醚類組成,而非特定命名化合物的明確鑑定。主要譜庫命中為聚(乙二醇甲醚),且排名最高的譜庫模式主要由富含醚的含氧分子組成,但整體匹配強度極弱,且無直接文獻確認此樣品。觀察到的1093和1247 cm-1波段支持顯著的C-O單鍵特性,而2867和1450 cm-1與脂肪族C-H相容。然而,1728 cm-1波段指示含羰基成分,不能以簡單的聚乙二醇甲醚歸屬充分解釋,因此最安全的結論是更廣泛的含氧醚類材料方向。
建議的下一步: Recollect the FTIR spectrum over the full range with improved signal quality, especially to confirm the carbonyl region near 1728 cm-1 and the C-O fingerprint region from about 1000 to 1300 cm-1. Check for the presence or absence of a broad O-H band in the 3200-3600 cm-1 region to distinguish hydroxylated glycol ethers from capped polyethers. Compare the sample against authenticated spectra of Poly(ethylene glycol methyl ether), Poly(ethylene oxide), and representative glycol ethers under the same measurement conditions. If available, use complementary GC-MS or LC-MS for lower-mass glycol ethers, or NMR and SEC/GPC if a polymeric polyether is suspected.
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