Microwave‐assisted ring‐opening polymerization of p‐dioxanone

Abstract

The ring-opening polymerization (ROP) of p-dioxanone (PDO) under microwave irradiation with triethylaluminum (AlEt 3) or tin powder as catalyst was investigated. When the ROP of PDO was catalyzed by AlEt 3 , the viscosity-average molecular weight (M v) of poly(p-dioxanone) (PPDO) reached 317,000 g mol À1 only in 30 min, and the yield of PPDO achieved 96.0% at 80 8C. Tin powder was successfully used as catalyst for synthesizing PPDO by microwave heating, and PPDO with M v of 106,000 g mol À1 was obtained at 100 8C in 210 min. Microwave heating accelerated the ROP of PDO catalyzed by AlEt 3 or tin powder, compared with the conventional heating method. V

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