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Corak FTIR paling konsisten dengan polimer hidrokarbon aromatik stirenik, dengan Polistirena sebagai padanan perpustakaan terdekat. Arah ini disokong oleh regangan C-H aromatik berhampiran 3031-3081 cm-1, jalur gelang aromatik pada 1604 dan 1493 cm-1, jalur C-H aromatik luar satah yang kuat pada 701, 751, dan 758 cm-1, dan regangan C-H alifatik pada 2926 dan 2857 cm-1, yang bersama-sama merupakan ciri polimer hidrokarbon yang digantikan fenil. Walau bagaimanapun, keyakinan perpustakaan sangat rendah dan tiada rujukan langsung atau bukti literatur berkaitan secara bebas mengesahkan tugasan entiti tertentu, jadi kesimpulan yang paling dipertahankan ialah arah polimer hidrokarbon aromatik stirenik dan bukannya pengenalan entiti yang kukuh
Langkah seterusnya yang disyorkan: Compare the sample directly against a verified Polystyrene reference spectrum collected under the same ATR or transmission conditions, focusing on the relative intensities and exact positions of the 1604, 1493, 758, and 701 cm-1 bands. Inspect the full spectrum for the typical styrenic fingerprint-region pattern and for any weak heteroatom-associated bands that could indicate additives, oxidation, or copolymerization. If a firmer identification is needed, use complementary methods such as Raman spectroscopy, DSC or TGA, or pyrolysis-GC/MS to distinguish Polystyrene from other styrenic polymers or blends. If the sample is a manufactured article, analyze a cleaned interior cross-section to reduce interference from surface coatings, weathering, or contamination.
| Kedudukan | Padanan % | Sebatian | SMILES | No. Spektrum | Tindakan |
|---|---|---|---|---|---|
| Memuatkan calon perpustakaan... | |||||
| # | Nombor gelombang (cm⁻¹) | Absorbans | Tugasan | Petikan | Status penetapan | |
|---|---|---|---|---|---|---|
| 1 | · | 701 | 1.00 | - | - | - |
| 2 | · | 2926 | 0.92 | - | - | - |
| 3 | · | 1450 | 0.91 | - | - | - |
| 4 | · | 3031 | 0.91 | - | - | - |
| 5 | · | 751 | 0.83 | - | - | - |
| 6 | · | 758 | 0.71 | - | - | - |
| 7 | · | 1493 | 0.41 | - | - | - |
| 8 | · | 3071 | 0.37 | - | - | - |
| 9 | · | 3081 | 0.33 | - | - | - |
| 10 | · | 2857 | 0.31 | - | - | - |
| 11 | · | 1604 | 0.28 | - | - | - |
| 12 | · | 1025 | 0.20 | - | - | - |
| 13 | · | 903 | 0.14 | - | - | - |
| 14 | · | 1070 | 0.13 | - | - | - |
| 15 | · | 1360 | 0.11 | - | - | - |
| 16 | · | 1376 | 0.11 | - | - | - |
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FTIR.fun
The user from Taiwan (IP: 2407::) uploaded a DOCX file containing three IR spectra. Swipe up to view the qualitative analysis of the first spectrum. The user also expressed intent to calculate sample thickness using interference peaks. Based on the spectra, the analysis was performed at wave numbers 2501 and 2563, yielding an interference peak difference (V₁ - V₂) of 62 cm-1 and ΔN = 1. By inputting the film's refractive index(n), the sample thickness (d) was determined.Here is the original spectrum of the sample extracted from the DOCX file.
en&2