Preparative
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Stimulated by the sustainability agenda, the polymer industry is actively engaged in developing new materials that combine excellent performance with low carbon footprint. Molecular weight is a defining characteristic of all polymers and often is one of the parameters manipulated to achieve desired performance. Gel permeation chromatography (GPC) is the method of choice for molecular weight characterisation. This paper provides an introduction to GPC and examines how it is evolving to meet the changing needs of this dynamic industry.