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Custom Polymer Synthesis Chromatography

Physical Testing

Thermal Analysis

Dilute Solution Viscosity Extractions & Digestions

Size Exclusion Chromatography (SEC) / Gel Permeation Chromatography (GPC) High-Performance Liquid Chromatography (HPLC) Gas Chromatography Gas Chromatography / Mass Spectrometry (GC/MS) Headspace Gas Chromatography / Mass Spectrometry (Headspace GC/MS)

Scanning Electron Microscopy / Energy Dispersive Xray Spectroscopy (SEM/EDS) Optical Microscopy Optical Birefringence Atomic Force Microscopy (AFM) Transmission Electron Microscopy (TEM) Image Analysis

Fourier Transform Infrared Spectroscopy (FTIR) Nuclear Magnetic Resonance Spectroscopy (NMR) X-ray Photoelectron Spectroscopy (XPS) Auger Electron Spectroscopy (AES)

Durometer Specific Gravity & Density Determination Tensile (Film, Plastic, Rubber) Flex (3 & 4 Point Bend) Compression Custom Fixture Development Melt Flow Index (MFI)

Differential Scanning Calorimetry (DSC) Thermogravimetric Analysis (TGA) Dynamic Mechanical Analysis (DMA) Rheology

Solvent Extractions Chemical and Thermal Digestion

Potentiometric Karl Fischer Halide Analysis

Research & Development Medical Product Testing Deformulation & Competitor Product Analysis Failure Analysis Custom Method Development & Testing Contamination Analysis Quality Control Assurance Routine Testing Services Polymer Structure Analysis Comparative Analysis Molecular Weight Analysis Additives Analysis Extractables & Leachables Analysis Material Certification & Qualification Aging & Chemical Resistance Testing Compounded Polymer Analysis Depth Profiling and Surface Analysis

Litigation Support Expertise

Additives Analysis Counterfeit Plastic Defect Identification Stolen Formulations

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Extractions & Digestions

Solvent Extractions

Washes samples with hot solvent to remove soluble portion.

Applications:

Determination of percent extractables

Filler content determination

Additive removal for further analysis

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Work We've Done

Silicone Tubing

A client had several samples of silicone tubing. The tubing needed to be tested to ensure that no undesired chemical compounds would move out of the tubing during standard use conditions. The tubing samples were extracted in Soxhlet extractors with three different solvents to remove any leachable compounds. The solvent extracts were then analyzed with Nuclear Magnetic Resonance Spectroscopy (NMR), Fourier Transform Infrared Spectroscopy (FTIR), and Gas Chromotography/Mass Spectrometry (GC/MS) to identify the leached compounds.

Semiquantitative analysis was also performed by comparing the intensity of the GC/MS signals from the sample with an internal standard. The primary compounds extracted were silicone oligomers, with a small amount of plasticizer.

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