Uncontrolled catalyst activity and volatile byproduct accumulation lead to material degradation and storage instability. Neutralizing these factors prevents polymer breakdown and explosive pressure buildup.

Crude pyrolysis oil contains impurities that prevent direct downstream processing or long-term stability. Removing these contaminants prevents catalyst poisoning and equipment fouling in chemical recycling.

Unreacted monomers and catalyst residues remain in the polymer matrix after synthesis. Removing these impurities prevents premature degradation and ensures regulatory compliance for food-contact applications.

Presence of co-extracted impurities and unwanted oil components. Removing these contaminants increases the bio-availability and industrial utility of phytosterols.