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.
YU TaoDING DingSHENG CongTUERHONGJIANG TuerdiLI Yan
