Raman spectroscopy provides a method to study many chemical bonds but it is particularly sensitive to the study of both homonuclear bonds and backbone vibrations.  This sensitivity is especially useful for the study of monomers and polymers. 

Application Areas Include Reaction
Monitoring for:
  • Chemical Composition
  • Control of Polymerization Reactions
  • Block and Co-polymer Formation

Raman microscopy or in situ Raman may be used to evaluate and control the level of crystallinity in a polymer during processes, or identify different phases within a polymer blend.  Physical properties including density can, in some cases, also be predicted during manufacturing.

In situ measurement is possible using Kaiser’s comprehensive range of sampling interfaces.

Sampling Interfaces Include:
  • Polymerization (extent and chemical ID)
  • Film or Fiber Crystallinity
  • Cross-linking (degree of)
  • Hydrogenation (extent, end-point)
  • Extrusion ("in die" extrusion measurements with high pressure probe)
  • Blending

Have an application that requires further investigation? Complete our Application Feasibility form to determine if Raman is a suitable technique.

Further information on polymers and Raman applications can be found in Handbook of Raman Spectroscopy:  From Laboratory to Process Line by Ian R. Lewis and Howell G. M. Edwards, Marcel Dekker, New York, New York (2001)

Application Resources
Title Category Format ID#  
Inline Monitoring of Ethylene Vinyl Acetate Copolymer with Raman Spectroscopy Raman Application Notes PDF AN404
Microstructural Analysis of Polybutadienes Raman Application Notes PDF AN403
Monitoring Emulsion Polymerization Reactions Raman Application Notes PDF AN400
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