Phosphate-containing flame-retardant polymers with good compatibility to polypropylene. II. Effect of the flame-retardant polymers on polypropylene

Two kinds of flame-retardant polymers prepared from the phosphorylation of poly(vinyl acetate) were employed to reduce the flammability of polypropyle ne (PP). The two flame-retardant polymers had very different effects becaus e of the differences in their chemical structure. Effects on flame retardan cy, thermal properties, mechanical properties, and phase morphology were in vestigated. Under a certain molecular design, the flame-retardant polymers were able to offer good flame retardancy, good mechanical properties, and g ood PP matrix compatibility. (C) 2001 John Wiley & Sons, Inc.