Quantitative Determination of PA6 and/or PA66 Content in Polyamide-Containing Wastes

• DOI: 10.1021/acssuschemeng.0c04190
• Publication Date: 2020-07-14T17:52:55Z
• Authors: Ema Žagar; Urška Češarek; Ana Drinčić; Simona Sitar; Igor M. Shlyapnikov; David Pahovnik
• Keywords: polyamide content; info:eu-repo/classification/udc/54; kemija; odpadki polimerov; kromatografija; 01 natural sciences; microwave chemistry; 0104 chemical sciences; liquid chromatography; chemical recycling; polymer waste; kemična reciklaža

A fast, robust, and convenient method for quantitative determination of polyamide-6 (PA6) polyamide-66 (PA66) in plastic wastes is presented. The includes a straightforward procedure complete hydrolysis polyamides (PAs) into the constituent monomers their hydrolyzates by high-performance liquid chromatography on mixed-mode column, from which contents particular PA are determined. was developed neat PA6 PA66 as well mixture further utilized PA-based composites postconsumer (carpet fishing net wastes) containing different amounts. information content type important because it determines maximum recovery monomer(s) chemical recycling consequently suitability waste feedstock. Moreover, proposed allows differentiation between mixtures, difficult to assess with precision conventional characterization techniques.