Identification and quantitation of antioxidants in polymeric materials
Impact Analytical has more than 20 years of experience providing analytical analyses for antioxidants. Our laboratories are equipped with the most advanced instrumentation to perform your analysis.
Antioxidant components are added to polymers to absorb oxidation and to shield the polymer material from degradation. Antioxidant packages can vary depending on the manufacturer, molder, application, or identity of the polymer material. Degradation can be caused by weathering and can lead to brittleness and yellowing of the product. As a result, being able to quantitate antioxidants and corresponding oxidation products in a polymer will provide information on the rate of degration for the antioxidant. Common antioxidants include, but are not limited to:
- Irganox 1010
- Irganox 1076
- Irgafos 168
- Butylated hydroxytoluene (BHT)
The identification of an additive package may also be required for reverse engineering or deformulation of a competitor’s product.
The Impact Analytical work process
When you work with us, our experts will first consult with you to discuss the objectives for the project and gather any available information about the product. Background information about the product can greatly aid in the identification of antioxidants as well as reduce the time required for the project. Our experts will work you and will work internally to develop the most efficient analysis plan and to select the most appropriate techniques for the project.
Techniques used for the process
Most antioxidant analyses will require some separation of components within the sample. Impact Analytical has the most advanced instrumentation to perform additive analyses after achieving some separation of components. Impact Analytical routinely analyzes for antioxidants using LC-MS, GC-MS, and HPLC-UV instruments. Our LC-MS can provide accurate mass information on components in the sample, which leads to timely identification of the antioxidants in the product. The LC-MS can also detect compounds without UV chromophores that would not be detected by HPLC-UV. GC-MS can detect more volatile components in the additive package. HPLC-UV may be used for quantitation of compounds in the additive package that have good UV chromophores. Only the most appropriated techniques will be used for the project helping you to manage the cost of the project.
Impact Analytical will communicate with you during your antioxidant analysis to ensure that your project objectives are met. Throughout the project you will be able to determine whether or not your needs have been satisfied and to determine if additional testing is required to satisfy your needs. A quality analysis for antioxidants will be the end product of our testing.