How can you identify MWCNTs from FTIR?

Quick answer

MWCNTs 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

Spectrum logic

The logic here is evidence aggregation: repeated literature mentions of MWCNTs, 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

• confidence 7.2

  MWCNTs

  Misra 等 - 2006 - FTIR studies of nitrogen doped carbon nanotubes DOI: 10.1016/j.diamond.2005.08.013
• confidence 7.2

  MWCNTs

  Morphological: Optical, and Mechanical Characterizations of Non-Activated and Activated Nanocomposites of SG and MWCNTs DOI: 10.3390/cryst11111280
• confidence 7.2

  MWCNTs

  Li Yan-Yan 等 - 2013 - Electrooxidation of Ethanol on Platinum Nanocubes DOI: 10.7503/cjcu20120468
• confidence 6.0

  MWCNTs

  The synthesis and microwave absorbing properties of MWCNTs and MWCNTs/ferromagnet composites DOI: 10.1007/s00339-016-9598-5
• confidence 6.0

  MWCNTs

  In vitro targeting and selective killing of mcf-7 and colo320dm cells by 5-fluorouracil anchored to carboxylated SWCNTs and MWCNTs DOI: 10.1007/s10856-021-06540-8
• confidence 6.0

  MWCNTs

  Improved Strength and Toughness of Carbon Woven Fabric Composites with Functionalized MWCNTs DOI: 10.3390/ma7064640
• confidence 5.2

  MWCNTs

  Carboxylation treatment of multiwalled carbon nanotubes monitored by infrared and ultraviolet spectroscopies and scanning probe microscopy DOI: 10.1016/j.diamond.2006.08.021
• confidence 5.2

  MWCNTs

  Heterogeneous Fenton-like discoloration of methyl orange using Fe3O4/MWCNTs as catalyst: process optimization by response surface methodology DOI: 10.1007/s11706-016-0326-z
• confidence 5.2

  MWCNTs

  Composite Polymer Electrolytes Based on (PEO)4CF3COOLi and Multi-Walled Carbon Nanotube (MWCNT) DOI: 10.3390/polym15010049
• confidence 5.2

  MWCNTs

  A Multi-Attribute Decision-Making Model for the Selection of Polymer-Based Biomaterial for Orthopedic Industrial Applications DOI: 10.3390/polym14051020