2006•Journal of Northwest UniversityRequires access

Degradation and product characterization of polypropylene in supercritical water

Zhao Si-zhen

Abstract

Aim To investigate the degradation of polypropylene in supercritical water and the degradation products.Methods The reactions were carried out in a batch tube reactor at 430~500℃ and 25~45MPa in 30~120min.Results The products include oil phase,aqueous phase and gases.The chief products,characterized by GC/MS,were aromatic compounds and methane.Conclusion Polypropylene can be degraded completely in supercritical water.A new way for plastic recycle is provided.

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Key concepts: Supercritical fluid, Polypropylene, Degradation (telecommunications), Chemical engineering, Methane, Aqueous solution, Phase (matter), Materials science