How can you identify PDMS from FTIR?

Quick answer

PDMS 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 PDMS, 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 7.1

  PDMS

  Slaughter 和 Stevens - 2014 - A cost-effective two-step method for enhancing the DOI: 10.1007/s13206-014-8105-3
• confidence 7.1

  PDMS

  Structural and Thermoanalytical Characterization of 3D Porous PDMS Foam Materials: The Effect of Impurities Derived from a Sugar Templating Process DOI: 10.3390/polym10060616
• confidence 7.1

  PDMS

  Pousti 等 - 2018 - Linear Scanning ATR-FTIR for Chemical Mapping and DOI: 10.1002/celc.201800968R1.
• confidence 5.9

  PDMS

  Kim 和 Jeong - 2011 - PDMS surface modification using atmospheric pressu DOI: 10.1016/j.mee.2011.02.084
• confidence 5.9

  PDMS

  Particles that slide over the water surface: Synthesis and characterization of iron oxides particles coated with PDMS, with hydrophobic and magnetic properties DOI: 10.1016/j.matchemphys.2015.05.014
• confidence 5.9

  PDMS

  Glycidyl and Methyl Methacrylate UV-Grafted PDMS Membrane Modification toward Tramadol Membrane Selectivity DOI: 10.3390/membranes11100752
• confidence 5.9

  PDMS

  Bonding antimicrobial rhamnolipids onto medical grade PDMS: A strategy to overcome multispecies vascular catheter-related infections DOI: 10.1016/j.colsurfb.2022.112679
• confidence 5.9

  PDMS

  Long-term hydrophilization of polydimethylsiloxane (PDMS) for capillary filling microfluidic chips DOI: 10.1007/s10404-019-2302-2
• confidence 5.9

  PDMS

  Green silicone elastomer obtained from a counterintuitively stable mixture of glycerol and PDMS DOI: 10.1016/j.polymer.2016.01.070
• confidence 5.1

  PDMS

  Poly(dimethylsiloxane) Surface Modification by Plasma Treatment for DNA Hybridization Applications DOI: 10.1166/jnn.2010.2826