Combination of corn pith fiber and biobased flame retardant: a novel method toward flame retardancy, thermal stability, and mechanical properties of polylactide
PublisherMultidisciplinary Digital Publishing Institute (MDPI)
Rights accessOpen Access
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 3.0 Spain
Some crop by-products are considered to be promising materials for the development of novel biobased products for industrial applications. The flammability of these alternatives to conventional materials is a constraint to expanded applications. Polylactide (PLA) composites containing a combination of oxidized corn pith fiber (OCC) and a biobased flame retardant (PA-THAM) have been prepared via an in situ modification method. SEM/EDS, FTIR and TGA were performed to establish that PA-THAM was coated onto the surface of OCC. The mechanical properties, thermal stability and fire behavior of PLA-based biocomposites were investigated. The incorporation of 5 phr PA-THAM imparted biocomposite good interfacial adhesion and increased decomposition temperature at 10% mass loss by 50 °C. The flame retardant properties were also improved, as reflected by an increased LOI value, a UL-94 V-2 rating, reduction of PHRR, and increased formation of char residue. Therefore, the introduction of 5 phr PA-THAM can maintain a good balance between flame retardancy and mechanical properties of this PLA/OCC system.
CitationYang, Y. [et al.]. Combination of corn pith fiber and biobased flame retardant: a novel method toward flame retardancy, thermal stability, and mechanical properties of polylactide. "Polymers", 1 Maig 2021, vol. 13, núm. 10, p. e1562.