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The Solid State Postcondensation of PET, 1

✍ Scribed by Barbara Gantillon; Roger Spitz; Timothy F. McKenna

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
234 KB
Volume
289
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Summary: A review of the processes underlying the solid state postcondensation of poly(ethylene terephthalate) (PET) is presented. Fundamental aspects of the reactions are treated, and it is shown that the rate of polycondensation in the solid state depends on the relative rates of two types of diffusion. On the one hand, the diffusion of reaction by‐products (physical diffusion) controls the rate of the forward reactions. And on the other hand the diffusion of end‐groups (chemical diffusion) allows the reaction to proceed.

The transesterification of BHET to form PET.

magnified imageThe transesterification of BHET to form PET.

πŸ“œ SIMILAR VOLUMES

The Solid State Postcondensation of PET,
The Solid State Postcondensation of PET, 2
✍ Barbara Gantillon; Roger Spitz; Timothy F. McKenna πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 English βš– 151 KB

## Abstract **Summary:** A process for the solid state polycondensation of PET is proposed. It is shown that by correctly choosing the prepolymerisation conditions it is possible to crystallise the product and to directly polymerise it in a dispersed phase. This process is significantly faster than

The Solid State Postcondensation of PET,
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✍ Barbara Gantillon; Roger Spitz; Timothy F. McKenna πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 English βš– 194 KB

## Abstract **Summary:** It was demonstrated that it is possible to produce prepolymers with a number‐average degree of polymerisation on the order of 5–40 directly in a liquid‐liquid dispersion in less than three hours. It was also shown that prepolymers made via this route and rapidly crystallise

The Solid State Postcondensation of PET,
The Solid State Postcondensation of PET, 4
✍ Barbara Gantillon; Roger Spitz; Jean-Luc Lepage; Timothy F. McKenna πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 English βš– 287 KB

## Abstract **Summary:** A new method of polymerising PET in the solid state is proposed in either a gas phase reactor, or in hydrocarbon dispersion. It is shown that the reaction can be carried out efficiently at temperatures on the order of 200–240 °C directly from a prepolymer without the need f