Effect of the catalyst‐monomer ratio on the molar mass and glass transition temperature of poly(oxy‐2,6‐dimethoxy‐1,4‐phenylene)

Abstract

Abstract2,6‐Dimethoxyphenol was polymerized using Ag2O‐triethylamine complex as catalyst and a study made of the effect of the catalyst‐monomer ratio on the yield, molar mass and polydispersity of poly(oxy‐2,6‐dimethoxy‐1,4‐phenylene). The glass transition temperatures Tg were measured with a computerized differential scanning calorimeter. The effect of the molar mass on Tg of poly(oxy‐2,6‐dimethoxy‐1,4‐phenylene) is discussed. The equation, Tg = Tg, ∞ − K/M, describes well the dependence of Tg on the viscosity‐average molar mass Mv from 1900 to 176000 g/mol. Some poly(oxy‐2,6‐dimethyl‐1,4‐phenylene) samples were studied as reference material.