ENSCL Villeneuve d’Ascq
Maude Jimenez, ENSCL Villeneuve d’Ascq, France, presented studies of PIN flame retardants in bio-sourced PLA (poly lactic acid). Combinations of melamine, ammonium polyphosphates and organo-modified montmorillonite clay showed to improve fire performance of PLA (e.g. peak heat release rate PHHR reduced by nearly 90%).
However, important issues with polymer ageing and humidity uptake were shown, related to impacts on breakdown of the polymer molecules.