Flame retardant and thermal behavior of polylactide/expandable graphite
composites (in English)
Polimery 2013, No 5, 361
In this article expandable graphite was used to produce fire retardant biobased polylactide. For this purpose, PLA blends with addition of 1, 5 or 10 wt. % of expandable graphite intercalated with sulphuric acid (GR) were obtained using co-rotating twin screw extruder. Thermal stability and flammability of prepared samples were examined by thermogravimetric analysis (TGA), cone calorimeter measurements and UL 94 test. Flammability UL-94 test shows the highest V-0 ranking from 5 % graphite loading, whereas 10 % is required for sensible decrease of rate of combustion in cone calorimeter forced combustion test.