Acetyl — Puncak serapan FTIR dan tugasan
Ini adalah nombor gelombang FTIR ciri di mana Acetyl cenderung menyerap, disusun dari literatur yang diterbitkan dan disusun berdasarkan bukti sokongan. Setiap tugasan dapat dikesan ke sumber (DOI) dan disahkan silang terhadap 130,000+ spektrum rujukan dan graf pengetahuan kami.
Backed by 8 cited sources
Jawapan pantas
Acetyl biasanya ditetapkan dengan mencari kelompok berulang puncak ciri dan bukan satu nombor tepat buku teks. Jadual di bawah menunjukkan di mana literatur paling kerap meletakkan kumpulan ini dalam FTIR, yang disusun mengikut bukti terkumpul.
Puncak FTIR ciri untuk Acetyl
| Nombor gelombang (cm⁻¹) | Fakta sokongan | Sumber dipetik | Keyakinan tertinggi |
|---|---|---|---|
| 1730 | 9 | 9 | 1.0 |
| 1735 | 8 | 7 | 1.0 |
| 1740 | 6 | 6 | 1.0 |
| 1734 | 5 | 5 | 1.0 |
| 1737 | 3 | 3 | 1.0 |
| 1720 | 3 | 3 | 1.0 |
| 1739 | 3 | 3 | 1.0 |
| 1733 | 3 | 3 | 1.0 |
| 1240 | 3 | 3 | 1.0 |
| 1728 | 3 | 2 | 1.0 |
| 1633 | 3 | 2 | 1.0 |
| 1238 | 2 | 2 | 1.0 |
| 1738 | 2 | 2 | 1.0 |
| 1731 | 2 | 2 | 1.0 |
| 1234 | 2 | 2 | 1.0 |
| 1320 | 2 | 2 | 1.0 |
| 1727 | 2 | 1 | 1.0 |
| 1424 | 1 | 1 | 1.0 |
| 1579 | 1 | 1 | 1.0 |
| 1718 | 1 | 1 | 1.0 |
| 1375 | 1 | 1 | 1.0 |
| 1366 | 1 | 1 | 1.0 |
| 1729 | 1 | 1 | 1.0 |
| 1222 | 1 | 1 | 1.0 |
| 1420 | 1 | 1 | 1.0 |
| 1255 | 1 | 1 | 1.0 |
| 1408 | 1 | 1 | 1.0 |
| 1642 | 1 | 1 | 1.0 |
| 1736 | 1 | 1 | 1.0 |
| 1123 | 1 | 1 | 1.0 |
Menunjukkan 30 puncak terbaik disokong daripada 73 jumlah untuk Acetyl.
Logik spektrum
Tugasan kumpulan berfungsi menjadi lebih yakin apabila beberapa jalur yang dijangkakan muncul bersama. Gunakan halaman ini untuk mencari puncak yang paling disokong, kemudian sahkan bahawa sampel yang sama menunjukkan corak yang koheren dan bukannya satu hit terpencil.
Penggunaan dunia sebenar
Halaman-halaman ini berguna untuk analisis bahan yang tidak diketahui, penjelasan puncak dalam laporan, penyelesaian masalah polimer, dan mengesahkan sama ada keluarga bahan calon adalah boleh dipercayai secara kimia.
Kesilapan biasa
- Menggunakan satu halaman kumpulan berfungsi sebagai keputusan bahan lengkap tanpa memeriksa spektrum yang lain.
- Dengan menganggap jalur yang paling kuat sentiasa menjadi yang paling diagnostik.
- Melupakan bahawa pemprosesan, bahan tambahan, penuaan, dan campuran boleh mengalihkan atau melebarkan puncak yang dijangkakan.
Nasihat pengesahan
Gunakan DSC, GC-MS, atau TGA apabila beberapa keluarga bahan berkongsi jalur yang serupa atau apabila kesan campuran menyebabkan tugasan FTIR tidak pasti.
Literatur di sebalik penetapan ini
-
2886 cm⁻¹ keyakinan 1.0
“The peak component in the composite fibers, therefore the absorption intensity of modified wood pulp was appeared at cm-1 peak at 2886 and 1459 which corresponds to the cm-1 1746 due to grafting of acetyl groups.”
Awal 等 - 2012 - Thermal analysis and spectroscopic studies of elec DOI: 10.1007/s10973-011-1875-0 -
1089 cm⁻¹ keyakinan 1.0
“The sharp band at 1089 corresponds The PVA used in this work were obtained in powder form to C-O stretching of acetyl group present on the PVA back from M/s.”
Bhajantri 等 - 2006 - Microstructural studies on BaCl2 doped poly(vinyl DOI: 10.1016/j.polymer.2006.03.054 -
1030 cm⁻¹ keyakinan 1.0
“The band at 1518 is generally ascribed to cm-1 C-H bending vibration and the band at 1030 assigned to C-O stretching of acetyl groups present in PVA.”
Devi 等 - 2019 - Structural and optical studies on PVA capped SnS f DOI: 10.1088/1674-4926/40/5/052101 -
1730 cm⁻¹ keyakinan 1.0
“Hemicelluloses were the first to degrade as proved by the initial decrease cm-1 of the 1730 peak due to the breaking of acetyl groups in xylan.”
Esteves 等 - 2013 - CHEMICAL CHANGES OF HEAT TREATED PINE AND EUCALYPT DOI: 10.4067/S0718-221X2013005000020 -
3300 cm⁻¹ keyakinan 1.0
“It is possible (NS, LAS, and HAS), which can be confirmed by the that HAS sample has a more electronegative surface cm-1 peak at 3300 which is commonly attributed to than LAS sample, as more acetyl groups were incorstretching of -OH groups”
Felipe Tirado 等 - 2017 - EVALUATION OF THE COAGULANT CAPACITY OF STARCH OBT DOI: 10.20937/RICA.2017.33.esp01.11 -
1149 cm⁻¹ keyakinan 1.0
“At 1149.37 the sharp band was observed which corresponded to the C-O stretching of acetyl group present on the back bone of PVA.”
Gopinath 等 - 2023 - Mechanical, structural and optical properties of p DOI: 10.15251/JOR.2023.191.23 -
1435 cm⁻¹ keyakinan 1.0
“In contrast, the paramecompletely cm-1 introduction of acetyl groups weakens the formation of interand ters including peaks associated with the C O at 1733 and cm-1, hydrogen bonds and gives rise to the disruption of intramolecular 1435 and”
Synthesis, optimization and characterization of acetylated corn starch with the high degree of substitution DOI: 10.1016/j.ijbiomac.2013.04.080 -
1242 cm⁻¹ keyakinan 1.0
“cm-1 The peak at 1242 of raw spectrum was EFB The moisture content (2-5%) seems to be necessary for attributed to a waxy acetyl group of hemicellulose ester the best reaction.”
Jahi 等 - 2020 - Empty Fruit Bunch Cellulose based Sorbent for Oil DOI: 10.17576/jsm-2020-4909-29
Lihat Acetyl dalam spektrum anda sendiri
Muat naik spektrum FTIR anda dan dapatkan laporan tafsiran penuh — tugasan puncak dengan petikan literatur, padanan perpustakaan, dan analisis berasaskan literatur — dalam beberapa saat.