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- W2026873248 abstract "Poly(2,6-dimethyl-1,4-phenylene ether) (PPE) was synthesized using or CuCl catalyst with various amounts of ligand and base in several different solvent systems. CuCl/1-methylimidazole/ammonium hydroxide was found to be an effective catalyst system which showed the highest polymer yield and molecular weight. The effects of catalyst/monomer ratio, different amine ligands, and the content of mono-functional reagent 2,4,6-trimethylphenol (TMP) additive on the polymer yield and molecular weight were investigated. Among the co-solvent systems used in this polymerization, chloroform/methanol 9/1(v/v) gave the highest polymer yield and molecular weight ( 55 K, 92 K, PDI 1.7). The catalytic activity between CuCl and CuI was compared by oxygen-uptake experiments and the formation of sideproduct, 5,5'-tetramethyl-4,4'-diphenoquinone (DPQ), was analyzed by ultraviolet spectroscopy." @default.
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- W2026873248 date "2012-01-25" @default.
- W2026873248 modified "2023-09-24" @default.
- W2026873248 title "The Effects of Polymerization Catalyst Systems on the Synthesis of Poly(2,6-dimethyl-1,4-phenylene ether)" @default.
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- W2026873248 doi "https://doi.org/10.7317/pk.2012.36.1.098" @default.
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