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Bisphenol-A polycarbonate–poly(butylene terephthalate) transesterification. I. Theoretical study of the structure and of the degree of randomness in four-component copolycondensates

✍ Scribed by Devaux, J. ;Godard, P. ;Mercier, J. P.

Book ID
105334218
Publisher
Wiley (John Wiley & Sons)
Year
1982
Tongue
English
Weight
294 KB
Volume
20
Category
Article
ISSN
0098-1273

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✦ Synopsis

Abstract

This article is the first of a series devoted to various aspects of exchange reactions in molten bisphenol‐A polycarbonate–poly(butylene terephthalate) mixtures. The statistical aspects of exchange reactions between two polycondensates of different chemical structure are considered. This theoretical approach enables us to calculate the mean lengths of the various sequences as well as several expressions for the degree of randomness in four‐component copolycondensates from triad or dyad concentrations as determined by NMR spectroscopy.

📜 SIMILAR VOLUMES

Bisphenol-A polycarbonate–poly(butylene
Bisphenol-A polycarbonate–poly(butylene terephthalate) transesterification. IV. Kinetics and mechanism of the exchange reaction
✍ Devaux, J. ;Godard, P. ;Mercier, J. P. 📂 Article 📅 1982 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 309 KB

## Abstract The kinetic aspects of the bisphenol‐A polycarbonate–polybutylene terephthalate exchange reaction are considered as a function of temperature and of the PC/PBTP ratio. The most likely mechanism is a direct reversible ester‐ester interchange reaction catalyzed by titanium residues presen

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## Abstract The transesterification behavior of a poly(butylene terephthalate) (PBT)/polycarbonate (PC) blend with the addition of di‐__n__‐dodecyl phosphate was studied with differential scanning calorimetry (DSC) and infrared spectroscopy. The effects of triphenyl phosphate (TPP) and di‐__n__‐dod

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## Abstract **Summary:** Analysis was made of the crystallization of the PET blocks in PET/PC copolymers as a function of the block length, varying from $\overline M \_{\rm n}$ = 5300 to 17100 g · mol^−1^ (__X__~n PET~ = 28–89, PET monomeric sequences). Analysis was also made of a series of PET hom