Benzoyl peroxide (BPO) can be used as a catalyst for styrene

LURIEL SHEN HIEN GROUP Is a professional manufacturer of benzoyl peroxide (BPO). Our BPO products are widely used not only in the medical industry, but also in the chemical industry, for example, as catalysts for styrene.

Benzoyl peroxide (BPO) can be used as a catalyst to form polystyrene polymerization molecules such as styrene and polystyrene, which are widely used, and can be used to make plastic products from cups to various packaging materials for everyone in our daily life.

The polymerization of polystyrene is a free radical chain reaction, but unless extreme conditions are adopted, it is difficult to form initial free radicals from stable styrene molecules.

An initiator such as benzoyl peroxide is added here. Benzoyl peroxide (BPO) can break the weak O-O bond (fission is because two oxygen atoms have the same electronegativity), producing two benzoyl radicals.

Benzoyl peroxide (BPO) can be used as a catalyst for styrene

The "dots" next to the atoms indicate the presence of unpaired electrons, which is why free radicals are so active. They try to find another free radical to pair with to form a covalent bond. These benzoyl groups then eliminate the carbon dioxide that forms the phenyl group. Because stable molecules become reactive free radicals, this is called the starting step, which triggers the formation of free radicals.

Although benzoyl peroxide (BPO) only produces a small amount of phenyl in the reaction process, once formed, they can interact with styrene monomer in the propagation process. One free radical disappears but is replaced by another, so the free radicals "multiply" in the chain reaction.