Meaning
Analytical platform combining liquid chromatography with high-resolution mass spectrometry separates and identifies polar, non-volatile or thermally labile compounds in polymer formulations. In plastic sourcing, lc-hrms allows for the screening of complex mixtures of plasticisers, light stabilisers and degradation products. It provides the exact molecular weight and chemical formula of unknown compounds, which is crucial for verifying the purity of virgin resins and the safety of recycled plastics.
Extractable Analysis
Plastics used in food packaging or medical devices must not release harmful substances into their contents. Using lc-hrms, laboratories can identify trace levels of extractable and leachable compounds that migrate from the moulded part during storage or sterilization. This analysis ensures that the material meets strict safety standards before the product is approved for commercial distribution.
Defect Resolution
Surface blooming or discolouration on moulded parts often stems from the migration of incompatible additives. When these cosmetic defects appear, this analytical technique helps engineers isolate and identify the specific additive or slip agent that is separating from the polymer matrix. Once identified, the processor can adjust the blend ratio or change the compounder to restore the surface finish of the parts.
Regrind Sourcing
Recycled resins are increasingly used to meet corporate sustainability goals and reduce raw material costs. Utilising this high-resolution mass spectrometry technique prevents the inadvertent introduction of banned or hazardous compounds from the regrind supply into the production stream.
