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In this work, a phosphorous-based compound(DOPO-ICN) was obtained by a two-step process. 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide(DOPO) reacted with formaldehyde firstly, followed with reacting with 1,6-hexane diisocyanate(HDI). The chemical structure of DOPO-ICN was confirmed by Fourier transform infrared spectroscopy(FTIR) and 1 H NMR.The influence of DOPO-ICN on the mechanical and flammability properties of jute/PLA composites was studied. Compared to DOPO, DOPO-ICN improved the tensile, flexural and impact strength of the flame retardant jute/PLA composites. Moreover,the flammability of jute/PLA composites with different DOPO and DOPO-MA loading was investigated by thermogravimetric analysis(TGA), UL 94 test and limiting oxygen index(LOI) measurements. The results showed that DOPO-ICN imparted the flame retardancy to the jute/PLA composites.
9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) reacted with formaldehyde first, followed by The chemical structure of DOPO-ICN was confirmed by Fourier transform infrared spectroscopy (FTIR) and 1 H NMR. The influence of DOPO-ICN on the mechanical and flammability properties of jute / PLA composites were studied. Compared to DOPO, DOPO-ICN improved the tensile, flexural and impact strength of the flame retardant jute / PLA composites. Moreover, the flammability of jute / PLA composites with different DOPO and DOPO-MA loading was investigated by thermogravimetric analysis (TGA), UL 94 test and limiting oxygen index (LOI) measurements. The results was that DOPO-ICN imparted the flame retardancy to the jute / PLA composites.