13 C NMR spectroscopical sequence analysis of poly(ethylene terephthalate‐ co ‐oxybenzoate)s
1989; Wiley; Volume: 190; Issue: 12 Linguagem: Inglês
10.1002/macp.1989.021901215
ISSN0025-116X
AutoresHarald Jancke, Frank Böhme, Karin Graßhoff, Manfred Rätzsch, G. Rafler,
Tópico(s)Advanced Polymer Synthesis and Characterization
ResumoAbstract The sequence distribution of liquid‐crystalline poly(ethylene terephthalate‐ co ‐oxybenzoate)s was determined by 13 C NMR spectroscopical investigations of samples with different compositions. All possible oxybenzoate‐ and terephthalate‐centered triads could be identified and assigned. The analysis of NMR substituent effects confirms the assignment. The comparison of the calculated statistical with the experimentally determined triad distribution shows a tendency for the formation of oxybenzoate blocks in the polymer chain.
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