How can you identify CMC from FTIR?
This page summarizes the recurring FTIR evidence reported for CMC, including the most frequent peaks, supporting functional groups, and literature-backed interpretation patterns. It is a structured evidence page, not a claim of automatic single-spectrum certainty.
Backed by 10 cited sources
Quick answer
CMC is usually reported with a recurring pattern of peaks and functional-group evidence. The most useful approach is to cross-check at least two characteristic peaks before treating it as a match, then verify whether the full spectrum still fits the same material family.
Peak interpretation
Possible materials / groups
| Funktionel gruppe | Bevis |
|---|---|
| Hydroxyl (O-H) | 19 |
| Alkyl C-H | 11 |
| Amide | 7 |
| Carbonyl (C=O) | 6 |
| Carboxyl (COOH) | 6 |
| C-O single bond | 3 |
| Water (H2O) | 3 |
| Secondary amine | 3 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of CMC, repeated peak positions, and repeated functional-group associations. A strong material hypothesis should still be supported by multiple peaks that agree with each other, not by one headline band alone.
Real-world usage
This page is designed for polymer identification, incoming-material QC, unknown plastic analysis, recycled-content review, and literature-backed interpretation of reference spectra.
Common mistakes
- Calling a material match too early because one famous peak is present.
- Ignoring sample prep, fillers, oxidation, water, or additives that can change the apparent pattern.
- Using literature evidence without checking whether your own sampling mode and spectrum quality are comparable.
Verification advice
Use DSC, GC-MS, or TGA to validate the material hypothesis when the peak pattern is ambiguous or mixed.
Literature behind this page
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Investigation on optical, structural and electrical properties of solid-state polymer nanocomposites electrolyte incorporated with Ag nanoparticles DOI: 10.1038/s41598-022-25304-0 -
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Polymeric/Dextran Wafer Dressings as Promising Long-Acting Delivery Systems for Curcumin Topical Delivery and Enhancing Wound Healing in Male Wistar Albino Rats DOI: 10.3390/ph16010038 -
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Preparation, characterization and in vitro release study of drug-loaded sodium carboxy-methylcellulose/chitosan composite sponge DOI: 10.1371/journal.pone.0206275 -
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Ruiz-Recasens 等 - 2017 - Identification of cellulose ethers in cultural her DOI: 10.1016/j.culher.2016.11.008 -
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REMOVAL OF METAL IONS FROM AQUEOUS SOLUTIONS USING CARBOXYMETHYL CELLULOSE/SODIUM STYRENE SULFONATE GELS PREPARED BY RADIATION GRAFTING DOI: 10.1016/j.carbpol.2016.09.049 -
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Azrak 等 - 2021 - Controlled Dispersion and Setting of Cellulose Nan DOI: 10.21203/rs.3.rs-376512/v1 -
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Hydrogel Films Based on Chitosan and Oxidized Carboxymethylcellulose Optimized for the Controlled Release of Curcumin with Applications in Treating Dermatological Conditions DOI: 10.3390/molecules26082185 -
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Eliza 等 - 2015 - Carboxymethyl Cellulose (CMC) from Oil Palm Empty DOI: 10.1088/1742-6596/622/1/012026 -
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Assessing the Carboxymethylcellulose Copper-Montmorillonite Nanocomposite for Controlling the Infection of Erwinia carotovora in Potato (Solanum tuberosum L.) DOI: 10.3390/nano11030802 -
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Ma 等 - 2013 - An investigation of flavor encapsulation comprisin DOI: 10.1007/s13726-013-0167-x
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