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Single step room temperature oxidation of poly(ethylene glycol) to poly(oxyethylene)‐dicarboxylic acid
Author(s) -
Lele B. S.,
Kulkarni M. G.
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19981031)70:5<883::aid-app7>3.0.co;2-p
Subject(s) - dicarboxylic acid , ethylene glycol , oxidizing agent , polymer chemistry , reagent , materials science , chemistry , organic chemistry
Poly(oxyethylene)‐dicarboxylic acids were obtained in high yields by room temperature oxidation of poly(ethylene glycol)s of molecular weights in the 4000–100,000 range using Jone's reagent (CrO 3 and H 2 SO 4 ) as the oxidizing agent. Oxidation by‐products from the reaction mixture were eliminated by adsorbing chromium salts onto activated charcoal. The acid values of poly(oxyethylene)‐dicarboxylic acids so synthesized were in agreement with the theoretical values. Poly(oxyethylene)‐dicarboxylic acids were characterized by 1 H‐NMR, IR spectroscopy. Spectral data were in agreement with the proposed structures of products. In summary, a convenient, one pot method for the synthesis of a wide range of poly(oxyethylene)‐dicarboxylic acids was developed. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 883–890, 1998