Catalysts are crucial in the production of PPO as they determine the rate of reaction and the molecular structure of the polymer. For example, using anionic catalysts often results in a more controlled polymerization process, leading to PPO with a narrow molecular weight distribution. On the other hand, cationic catalysts can produce polymers with different microstructures and branching, affecting the material's mechanical and thermal properties. The catalyst also impacts the degree of polymerization and the presence of any side reactions, which can further modify the final product.
