Synthesis of Aromatic Polyesters Bearing Pendant Carboxyl Groups by Phase Transfer Catalysis |
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| Authors: | Dae-Won Park Dong-Heon Ha Joo-Young Park Jeong-Yeul Moon and Hwa-Soo Lee |
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| Institution: | (1) Department of Chemical Engineering, College of Engineering, Pusan National University, Janjun-Dong, Kumjung-Ku, Pusan, 609-735, South Korea |
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| Abstract: | Aromatic polyester (PEA) and copolyesters having pendant carboxyl groups aredirectly synthesized from isophthaloyl chloride, diphenolic acid and diols byaqueous/organic two-phase interfacial polycondensation, using phase transfercatalysts. The yield and molecular weight of the polyester were remarkablyaffected by the structure of quaternary ammonium salts and crown ether catalysts.The phase transfer reaction steps are suggested to explain this phenomena. Theproperties of copolyesters were dependent on the original structure of diols. |
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| Keywords: | Polyester phase transfer catalyst copolyester isophthaloylchloride diphenolic acid quaternary ammonium salt crown ether |
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