How can you identify polyaniline from FTIR?

Quick answer

polyaniline 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 polyaniline, 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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  Dey Sadhu 等 - 2020 - Preparation and characterization of polyanilinea DOI: 10.1002/pc.25738
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  Conversion of Sewage Water into H2 Gas Fuel Using Hexagonal Nanosheets of the Polyaniline-Assisted Deposition of PbI2 as a Nanocomposite Photocathode with the Theoretical Qualitative Ab-Initio Calculation of the H2O Splitting DOI: 10.3390/polym14112148
• достоверность 1,0

  polyaniline

  Synthesis of Uniform Polyaniline Nanofibers through Interfacial Polymerization DOI: 10.3390/ma5081487
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  Polyaniline

  Investigation of the binding of dioxin selective pentapeptides to a polyaniline matrix DOI: 10.1016/j.synthmet.2012.04.012.
• достоверность 0,9

  Polyaniline

  Revisiting the Redox Transitions of Polyaniline. Semiquantitative Interpretation of Electrochemically Induced IR Bands DOI: 10.1016/j.jelechem.2021.115593
• достоверность 0,9

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  Enhanced conductivity and fluorescence of polyaniline doped with Eu3+, Tb3+, and Y3+ ions DOI: 10.1002/app.36516
• достоверность 0,9

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  Conductive Polyaniline Patterns on Electrospun Polycaprolactone/Hydroxyapatite Scaffolds for Bone Tissue Engineering DOI: 10.3390/ma14174837
• достоверность 0,8

  polyaniline

  Effect of ultrasonication on particle size and magnetic properties of polyaniline NiCoFe2O4 nanocomposites DOI: 10.1016/j.jmmm.2014.04.024
• достоверность 0,8

  polyaniline

  Stopband attenuation of silica spheres by attaching aniline and polyaniline DOI: 10.1016/j.synthmet.2013.03.007
• достоверность 0,8

  polyaniline

  Preparation of Electrospun Nanocomposite Nanofibers of Polyaniline/Poly(methyl methacrylate) with Amino-Functionalized Graphene DOI: 10.3390/polym9090453