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Plastics & Polymers Testing and Analysis

Problems with polymer product failure?

Researching new additives?

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 Plastic and polymer testing

Chemir offers a complete range of analyses for polymers, plastics and composites. We can provide analytical services from basic characterization of materials to investigations of complex problems. Plastic materials can be found in a wide variety of industries, including medical devices, packaging, sporting goods, toys, industrial products, construction materials, consumer goods and more.

In our plastic testing labs, we use analytical instrumentation such as FTIR, GC/MS, GPC, LC/MS, Optical Microscopy, NMR, SEM/EDS, mDSC, XPS, ToF-SIMS and Pyrolysis-GC/MS. Our experts have years of experience interpreting this data to investigate challenges such as:

  • Contaminant or impurity identification
  • Analysis of raw materials
  • Comparison analysis
  • Compositional analysis
  • Deformulation (reverse engineering)
  • Suspected failures
  • Identification of suspect materials
  • Off-odor, off-color problems
  • Product failures
  • Good vs. bad lot sample investigations

We have extensive experience in plastic and polymer analysis and processing. Our polymer and plastic testing experts have investigated a wide range of polymeric materials, including:

Our polymer analysis and materials science capabilities range from obtaining basic information to more detailed and structurally specific results. Depending on our clients' needs, we can offer a strategic combination of physical and chemical testing to answer specific questions. Physical properties analyzed have included:

  • Tensile properties
  • Adhesive strength
  • Compressibility
  • Cross-sectional multiple layer-film thickness
  • Thermal properties (including glass transition, melting point, thermal expansion and crystallinity)

Services for testing plastics and polymer materials for chemical properties include:

  • Molecular weight distribution
  • Total molecular weight
  • End group analysis
  • Co-polymer backbone chemistry, comonomer contents/ratios, polymer blends
  • Additive and resin identification
  • Testing plastics for tensile, modulus and elongation
  • Chemical family, including base polymer characterization

Our facility is ISO 9001:2008 certified, FDA registered and DEA licensed, and is centrally located in suburban St. Louis, Missouri.

Plastic bottlesPlastic and Polymer Testing Services:

Case Study:

Determining the Reason for Heat Seal Adhesive Failure

A manufacturer’s heat seal polymer adhesive failed to maintain an airtight seal after several days. The client contacted CHEMIR, as their production line was halted and their new product could not ship. Our client’s new adhesive formula, a polyurethane-acrylic hot melt adhesive, was suspected to be the culprit. After deformulating the new and old formulas, the data showed important differences in the molecular weight and molecular weight distribution, as well as the urethane-acrylic ratio. We determined that these variations were the reason why the adhesive failed. We suggested several formula changes, and the new formula resulted in successful hermetic seal. 

View more case studies

Chemir is a member of SPI- The Plastics Industry Trade Association.  Members of our team are also affiliated with SPE-The Society of Plastic Engineers.

Other Resources for the Plastics & Polymers Industry: