ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary This paper describes a novel mechanism for the depolymerization of poly(2,6-dimethyl-1,4-phenylene oxide). This radical-anion mechanism is responsible for liquid (organic solvent)-liquid (aqueous inorganic base) phase transfer catalyzed depolymerization of poly(2,6-dimethyl-1,4-phenylene oxide). This depolymerization occurs through the addition of an aryloxy radical to the terminal phenolate anion of the polymer. The particular example discussed in this paper refers to the depolymerization of poly(2,6-dimethyl-1,4-phenylene oxide) in the presence of either 2,4,6-trimethylphenol or 4-tert-butyl-2,6-dimethylphenol. The similarities and differences between the phase transfer catalyzed polymerization of 4-bromo-2,6-dimethylphenol in the presence of 2,4,6-trimethylphenol and 4-tert-butyl-2,6-dimethylphenol and the phase transfer catalyzed depolymerization of poly(2,6-dimethyl-1,4-phenylene oxide) in the presence of the same two phenols are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00298323
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