Intercalation of perfluorobutane sulfonate into layered double hydroxides

ZnMgAl–layered double hydroxides (ZnMgAl–NO3–LDH) intercalated with perfluorobutane sulfonate (PFBS) were investigated as a new flame retardant for acrylonitrile-butadiene-styrene (ABS) resins. Powder X-ray diffraction and FT-IR spectra confirmed the intercalation of PFBS by exchange of nitrate ions. The enhanced performance of the ZnMgAl–PFBS–LDH/ABS composites was possibly due to the high char residue of ZnMgAl–PFBS–LDH. Preliminary combustion tests showed that the ZnMgAl–PFBS–LDH/ABS composites exhibited higher fire retardance and smoke suppression properties compared to ZnMgAl–NO3–LDH/ABS, ABS containing a physical mixture of ZnMgAl–NO3–LDH and PPFBS, PPFBS/ABS, and pristine ABS.