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Synthesis and chemical modification of new functional aromatic polyethers by phase transfer catalysis

In the field of functional polymers, new aromatic polyethers were obtained with good yields by interfacial polycondensation of (EBr2)n and bisphenol A (bis(4-hydroxyphenylether) or catechol (2-hydroxyphenol) with various catalysts (Aliquat, TBAB, and TDA1).The structure of all aromatic polyethers was determined by means of 1H and 13C NMR, and infrared spectra. All polyethers had good solubilities and could be soluble in usual solvents such as acetone, chloroform, and dichloromethane. Average molecular weight ranged from 1000 to 11000 g mol−1. Their thermal characteristics were also studied by differential scanning calorimetry. The hydrolysis of these aromatic polyethers esters gives aromatic polyethers acids.