Intrinsic flame retardancy of poly(lactic acid) bead foams

Linear economy models are no longer acceptable for the plastic industry and a change to sustainable circular must take place. In field of thermoplastic foams, biopolymer poly(lactic acid) (PLA) is suitable alternative fossil based foams like polystyrene. However, production PLA bead still challenge. regards products, reduction needed polymer additives aspired simplify union end-of-life streams. Flame retardants (FR) required in many applications often largest proportion additives. It turns out that removal FRs, example REACh registered FR hexabromocyclododecane polystyrene requires great effort. This paper shows require achieve class E classification construction products. Therefore, nine types analyzed by differential scanning calorimetry, thermogravimetric analysis, gel permeation chromatography, rheotens measurements. From five types, could be produced with two different densities. addition, containing 1.5 wt% alkoxy amine were produced. The flammability was investigated LOI, DIN-4102-1-B2, cone calorimeter tests.