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

## TL;DR

Vibratory ball milling makes a flame-retardant material more effective by reducing its particle size, allowing it to be used in polymer emulsions.

## Contribution

A new method using vibratory ball milling to enhance the performance of solid polyelectrolyte complexes as flame-retardant additives.

## Key findings

- Vibratory ball milling reduces the particle size of the polyelectrolyte complex by an order of magnitude.
- The processed material achieves self-extinguishing behavior and a V-0 rating in UL 94 flame testing.

## Abstract

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.

Vibratory ball milling reduces the particle size of a solid polyelectrolyte complex (PEC) by an order of magnitude, enabling its use as a flame‐retardant additive in a polymer emulsion to achieve self‐extinguishing behavior. This work demonstrates a new approach for using solid PECs as flame‐retardant additives.