Polymer Types and Blends

Understanding the base polymer (or polymer backbone) of a compound is an important step towards evaluating options for end use applications or for competitive benchmarking.

The composition of rubber in cured, compounded products can give researchers a view at the predicted life of the material. While certain polymers may have superior elasticity, for example, they may have inadequate ozone resistance in a given application.  Through polymer type identification, researchers can compare performance criteria before specifying a material for use.

Some common techniques used determine the polymer type present in a compound include:

Other common methods are noted in ASTM D3677.  Smithers experts can recommend the proper testing technique based on the investigation that is required.

Please contact us to discuss your needs, for more information or to request a quote.


Common Test Protocols

ASTM D297

Standard Test Methods for Rubber Products—Chemical Analysis

ASTM D1513

Standard Test Method for Carbon Black, Pelleted—Pour Density

ASTM D2000

Standard Classification System for Rubber Products in Automotive applications

ASTM D2983

Standard Test Method for Low-Temperature Viscosity of Automatic Transmission Fluids, Hydraulic Fluids, and Lubricants using a Rotational Viscometer

ASTM D3418

Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry

ASTM E1131 — Standard Test Method for Compositional Analysis by Thermogravimetry

ASTM D3566

Standard Practice for Rubber—Determination of Bromine in the Presence of Chlorine by Oxygen Combustion

ASTM D3677

Standard Test Methods for Rubber – Identification by Infrared Spectrophotometry

ASTM E1252 — Standard Practice for General Techniques for Obtaining Infrared Spectra for Qualitative Analysis

ASTM D3849

Standard Test Method for Carbon Black—Morphological Characterization of Carbon Black Using Electron Microscopy

ASTM D4004

Standard Test Methods for Rubber—Determination of Metal Content by Flame Atomic Absorption (AAS) Analysis

ASTM D4574

Standard Test Methods for Rubber Compounding Materials—Determination of Ash Content

ASTM D5667

Standard Test Method for Rubber From Synthetic Sources—Total and Water Soluble Ash

ASTM D6869

Standard Test Method for Coulometric and Volumetric Determination of Moisture in Plastics Using the Karl Fischer Reaction (the Reaction of Iodine with Water)

ASTM F3188

Standard Specification for Extractable Hazardous Metals in Synthetic Turf Infill Materials

ISO 11357

Plastics -- Differential scanning calorimetry (DSC)