Abstract
In this article expandable graphitewas used to produce fire retardant biobased poly- lactide. For this purpose,PLAblends with addition of 1, 5 or 10 wt.%of expandable graphite inter- calated 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 UL94 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
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