Vibratory Ball Milling of Solid‐State Flame‐Retardant Polyelectrolyte Complex for Use in Polymer Emulsions

Vibratory ball milling reduces the particle size of a polyallylamine, poly(sodium phosphate) containing polyelectrolyte complex (PEC) by an order of magnitude for use as a flame‐retardant additive in a polymer emulsion to achieve self‐extinguishing behavior and a V‐0 rating with UL 94 flame testing. This demonstrates a new approach for using solid PECs as flame‐retardant additives.