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P. Wei, S. Bocchini, G. Camino

Flame retardant and thermal behavior of polylactide/expandable graphite

composites (in English)

Polimery 2013, No 5, 361


DOI: dx.doi.org/10.14314/polimery.2013.361

Summary

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.


Key words: expandable graphite, polylactide, flame retardant, thermal stability

e-mail: sergio.bocchini@iit.it

P. Wei, S. Bocchini, G. Camino (1.31 MB)
Flame retardant and thermal behavior of polylactide/expandable graphite composites (in English)