Chitosan — FTIR absorption peaks and assignments
These are the characteristic FTIR wavenumbers where Chitosan tends to absorb, compiled from published literature and ranked by supporting evidence. Each assignment is traceable to a source (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Schnelle Antwort
Chitosan is usually assigned by looking for a recurring cluster of characteristic peaks rather than one exact textbook number. The table below shows where the literature most often places this group in FTIR, ranked by accumulated evidence.
Characteristic FTIR peaks for Chitosan
| Wellenzahl (cm⁻¹) | Unterstützende Fakten | Zitierte Quellen | Höchstes Vertrauen |
|---|---|---|---|
| 1655 | 4 | 4 | 1,0 |
| 1080 | 3 | 3 | 1,0 |
| 1642 | 3 | 2 | 1,0 |
| 1630 | 3 | 2 | 1,0 |
| 1062 | 2 | 2 | 1,0 |
| 1151 | 2 | 2 | 1,0 |
| 1610 | 2 | 2 | 1,0 |
| 1650 | 2 | 2 | 1,0 |
| 2800 | 2 | 2 | 1,0 |
| 3354 | 2 | 2 | 1,0 |
| 3000 | 2 | 2 | 1,0 |
| 1654 | 2 | 1 | 1,0 |
| 1452 | 1 | 1 | 1,0 |
| 2928 | 1 | 1 | 1,0 |
| 1012 | 1 | 1 | 1,0 |
| 1195 | 1 | 1 | 1,0 |
| 1106 | 1 | 1 | 1,0 |
| 1375 | 1 | 1 | 1,0 |
| 1705 | 1 | 1 | 1,0 |
| 2850 | 1 | 1 | 1,0 |
| 1633 | 1 | 1 | 1,0 |
| 1064 | 1 | 1 | 1,0 |
| 2874 | 1 | 1 | 1,0 |
| 1071 | 1 | 1 | 1,0 |
| 1148 | 1 | 1 | 1,0 |
| 3846 | 1 | 1 | 1,0 |
| 1230 | 1 | 1 | 1,0 |
| 3448 | 1 | 1 | 1,0 |
| 1000 | 1 | 1 | 1,0 |
| 520 | 1 | 1 | 1,0 |
Showing the 30 best-supported peaks of 149 total for Chitosan.
Spektrumslogik
Eine Funktionsgruppenzuordnung wird zuverlässiger, wenn mehrere erwartete Banden gemeinsam auftreten. Verwenden Sie diese Seite, um die am stärksten gestützten Peaks zu finden, und bestätigen Sie dann, dass dieselbe Probe ein kohärentes Muster und nicht einen einzelnen isolierten Treffer aufweist.
Praktische Anwendung
Diese Seiten sind nützlich für die Analyse unbekannter Materialien, die Erklärung von Peaks in Berichten, die Fehlerbehebung bei Polymeren und die Überprüfung, ob eine in Frage kommende Materialfamilie chemisch plausibel ist.
Häufige Fehler
- Verwendung einer Seite für funktionelle Gruppen als vollständiges Materialurteil, ohne den Rest des Spektrums zu überprüfen.
- Annahme, dass die stärkste Bande immer die diagnostischste ist.
- Vergessen, dass Verarbeitung, Zusatzstoffe, Alterung und Mischungen erwartete Peaks verschieben oder verbreitern können.
Beratung zur Verifizierung
Verwenden Sie DSC, GC-MS oder TGA, wenn mehrere Materialfamilien ähnliche Banden aufweisen oder wenn Mischeffekte die FTIR-Zuordnung unsicher machen.
Literatur hinter diesen Zuweisungen
-
2361 cm⁻¹ Vertrauen 1,0
“A signal at 1737 on chitosan spectrum was attributed to the carboxylic (C=O) groups T 2361cm-1 overlapped by MPEO incorporation.”
Mentha piperita essential oils loaded in a chitosan nanogel with inhibitory effect on biofilm formation against S. mutans on the dental surface DOI: 10.1016/j.carbpol.2019.02.018 -
2071 cm⁻¹ Vertrauen 1,0
“3(b) that the introcm-1 the contact ion-pairs, the band at 2071 is attributed to the duction of the phthalimido group into the chitosan backbone has 2033cm-1 reflection triple ion aggregates and the band at is assigned to the disrupted the”
Synthesis and characterizations of phthaloyl chitosan-based polymer electrolytes DOI: 10.1016/j.jnoncrysol.2012.04.019 -
2908 cm⁻¹ Vertrauen 1,0
“The peak at 2908.04 corresponded to cm(cid:2)1 Chitosan film CeH the stretching, while the band at 1335.74 was OeH the of water.”
Bourtoom 和 Chinnan - 2008 - Preparation and properties of rice starch-chitosan DOI: 10.1016/j.lwt.2007.10.014 -
2878 cm⁻¹ Vertrauen 1,0
“The band at cm(cid:1)1 gelthestraincurvedisplaysajumpofthestrainvalueinresponse of chitosan corresponding to the C-H vibration, is 2878 OF cm(cid:1)1”
Chakraborty 等 - 2012 - Improved mechanical and photophysical properties o DOI: 10.1039/c2jm33995a -
3000 cm⁻¹ Vertrauen 1,0
“Because the concentrated acids clean samples from any bands above 3000 are related to the overlap of the stretching impurity, which give chitosan more opportunities for recrystallization vibration of the OH and NH bonds [35, 36].”
A comparison of chitosan properties after extraction from shrimp shells by diluted and concentrated acids DOI: 10.1016/j.heliyon.2020.e03486 -
3438 cm⁻¹ Vertrauen 1,0
“Figure 1C, for the hybrid brid chitosan-CuO nanocomposite, showed the noisy shape with the presence of the broad chitosan-CuO nanocomposite, showed the noisy shape with the presence of the broad band at 3438 cm-1 and the two characteristic”
Chitosan Capped Copper Oxide Nanocomposite: Efficient, Recyclable, Heterogeneous Base Catalyst for Synthesis of Nitroolefins DOI: 10.3390/catal12090964 -
3426 cm⁻¹ Vertrauen 1,0
“Based on the FTIR spectra of the cm-1 chitosan membrane in Figure 2 showed that it has a wide absorption at 3425.58 that indicates the cm-1 vibration stretching -OH group.”
Hastuti 和 Assya'adha - 2020 - Synthesis and Characterization of Chitosan Membran DOI: 10.1088/1757-899X/833/1/012068 -
3621 cm⁻¹ Vertrauen 1,0
“FTIR spectrum presented significant peaks at 3621 1013 was attributed to chitosan, Accepted: 11October2022 cm-1 29Si, 27Al, 13H and 787 signified the stretching of Si-O-Si on HNT.”
Synthesis and Optimization of Superhydrophilic-Superoleophobic Chitosan–Silica/HNT Nanocomposite Coating for Oil–Water Separation Using Response Surface Methodology DOI: 10.3390/nano12203673
See Chitosan in your own spectrum
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