The microstructure of poly(butylene terephthalate) copolymers via 13C NMR sequence distribution analysis: Solid-state copolymerization versus melt copolymerization

M.A.G. Jansen, J.G.P. Goossens, G. Wit, de, C.M.E. Bailly, C.E. Koning

Research output: Contribution to journalArticleAcademicpeer-review

21 Citations (Scopus)
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Abstract

Two diols, 2,2-bis(4-[hydroxyethoxy]phenyl)propane (Dianol 220 (R)) and bis(2-hydroxyethyl)terephthalate (BHET), were incorporated into poly(butylene terephthalate) (PBT) by solid-state polymerization (SSP) and melt polymerization (MP). Different PBT/diol ratios were used to obtain copolymers with different compositions. C-13 NMR spectroscopy was used to analyze the sequence distribution and the data analysis was discussed in detail. Both Dianol and BHET were randomly incorporated in the MP copolymers. For both PBT-Dianol and PBT-BHET copolymers obtained via SSP, a non-random, blocky microstructure was obtained. For the PBT-Dianol copolymers, the randomness increased for increased fractions of incorporated Dianol. For the PBT-BHET copolymers, the randomness continuously decreased with increased fractions of incorporated BHET.
Original languageEnglish
Pages (from-to)19-30
Number of pages12
JournalAnalytica Chimica Acta
Volume557
Issue number1-2
DOIs
Publication statusPublished - 2006

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