Post consumer pet depolymerization by acid hydrolysis

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Data

2007-02-01

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Coorientador

Pós-graduação

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Editor

Taylor & Francis Inc

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Artigo

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Resumo

The reaction of post-consumer poly(ethylene terephthalate) with aqueous solutions of sulfuric acid 7.5M was investigated in terms of temperature, time and particle size. The reaction extent reached 80% in four days at 100 degrees C and 90% in 5 hours at 135 degrees C. TPA obtained was purified and considered in the same level of quality of the commercial one after tests of elemental analysis, particle size and color. It was concluded that the hydrolysis occurred preferentially at the chain ends and superficially, having as controller mechanism the acid diffusion into the polymer structure. The shrinking-core model can explain the reaction kinetics.

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Inglês

Como citar

Polymer-plastics Technology and Engineering. Philadelphia: Taylor & Francis Inc., v. 46, n. 2, p. 135-144, 2007.

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