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Bisphenol-A polycarbonate–poly(butylene terephthalate) transesterification. II. Structure analysis of the reaction products by IR and 1H and 13C NMR

✍ Scribed by Devaux, J. ;Godard, P. ;Mercier, J. P. ;Touillaux, R. ;Dereppe, J. M.

Book ID
105334219
Publisher
Wiley (John Wiley & Sons)
Year
1982
Tongue
English
Weight
580 KB
Volume
20
Category
Article
ISSN
0098-1273

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✦ Synopsis

Abstract

The structure of the four‐component copolyester resulting from the exchange reaction between molten bisphenol‐A polycarbonate and poly(butylene terephthalate) is analyzed as a function of the reaction time by infrared and nuclear magnetic resonance spectroscopy. By applying a statistical method developed earlier, the mean chain length of the various sequences as well as the degree of randomness is computed. The exchange reaction leads initially to the formation of a block copolyester with reduced solubility. As the reaction proceeds, a soluble random copolycondensate is progressively formed.

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