FTIR and Raman – Composition and Contamination Analysis
FTIR and Raman are spectroscopy techniques that provide molecular information from various types of materials.
Polymer Case Study: Blistering Paint
What causes blistering or bubbling within a coating or paint film? These unsightly spots can stem from several factors including moisture entrapment or permeation, contamination, excessive application of coating and more. Blistering paint indicates that the coating is failing, and investigation is needed.
Case Study
Blisters were observed in paint applied to steel plates that had undergone treatment with a corrosion inhibitor. An investigation was performed to determine if there was evidence of contamination on the inside of the blister.
Analysis
Paint from a smooth area was removed with a scalpel to serve as a control. A comparison of the elemental profile of the underside of the blister was made with the control paint section. Elements commonly associated with salts (potassium, sodium, and chlorine) were detected by SEM-EDS only on the blistered samples. The blistered area also exhibited a brown color, whereas the control counterpart was green.
Result
The brown coloration and the presence of salts were indicative of corrosion, suggesting the steel surface had not been properly cleaned prior to paint application.
Failure Analysis of Polymers
For more than 50 years, scientists and engineers at Eurofins EAG have investigated and resolved product failures for clients. Our team of experts identify key failure indicators and follow them to the root cause.
Polymeric Materials Evaluated at EAG
Failure analysis of plastics, thermosets, and rubber materials is commonly performed on finished products and typically involve comparative analysis between failed and non-failed samples. Once the potential root cause is identified, experiments can be designed and conducted to test the hypothesis and recreate the failure in the laboratory. Eurofins EAG can evaluate a variety of polymer types, including:
- Raw materials in polymer formulations
- Adhesives (heat/moisture/UV-cured, silicones, epoxies, acrylates)
- Coatings (functional or decorative)
- Thermoplastics, thermosets, thermoplastic elastomers, composites
- Molded, extruded, cast components
Eurofins EAG Laboratories offers a full suite of analytical techniques to evaluate the identity, composition, morphology, topography, and rheology of polymeric materials and components.
- Chromatography: GC, GC-MS, HPLC, IC, LC-MS, Pyrolysis GC-MS, HS/TD/SPME GC-MS
- Inorganic Identification and Quantification: ICP-MS, ICP-OES, SEM-EDS, XRD, XRF
- Physical Testing: Contact Angle, Mechanical Testing, Rheometry, Viscometry
- Spectroscopy: Ellipsometry, FTIR, NIR, NMR, Raman, UV-Vis
- Surface Analysis: Auger, SEM, TOF-SIMS, XPS
- Surface Metrology: AFM, Nanoindentation, Profilometry
- Thermal Analysis: DMA, DSC, RGA, TGA, TGA-IR, TGA-MS, TMA
Contact Our Team
Call +1 800-366-3867 or email us.
Related Resources
- Webinar: Analytical Investigations of Plastics and Polymers
- Webinar: Characterization of Plasma Altered Polymer Surfaces
- Application Note: XPS Analysis of Surface Modified Polymers
- Blog: Polymer Case Study: Cracking of Molded Components
- Blog: Polymer Case Study: Curing Issues with Silicone Adhesive
- Blog: Polymer Case Study: Delamination of Food Packaging
- Blog: Polymer Case Study: Environmental Stress Cracking of a Polycarbonate Part
- Blog: Polymer Case Study: Incompatible Contaminant
- Blog: Polymer Case Study: Molded In Stresses
- Blog: Polymer Case Study: Off-Odor Memory Foam
- Blog: Polymer Case Study: Weathering Polymeric Films
- Service: Polymer Chemistry
- Technique: Smart Chart
- Industry: Chemical Testing
- Industry: Consumer Electronics Testing
- Industry: Medical Devices
- Brochure: Failure Analysis of Polymers
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