FTIR study of poly(propylene carbonate)/bisphenol A blends
A systematic investigation by FTIR spectroscopy was undertaken on blends of poly(propylene carbonate) (PPC) and bisphenol A (BPA). It provided direct evidence of the hydrogen bond (H‐bond) between BPA OH groups and PPC CO groups. Using a curve‐fitting method, qualitative as well as quantitative in...
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Veröffentlicht in: | Polymer international 2004-12, Vol.53 (12), p.2092-2098 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A systematic investigation by FTIR spectroscopy was undertaken on blends of poly(propylene carbonate) (PPC) and bisphenol A (BPA). It provided direct evidence of the hydrogen bond (H‐bond) between BPA OH groups and PPC CO groups. Using a curve‐fitting method, qualitative as well as quantitative information concerning this H‐bond interaction was obtained. The inter‐H‐bond in PPC/BPA blends was weaker than the self‐H‐bond in BPA. The absorptivities of the free and the H‐bonded CO groups were nearly equal. The fraction of H‐bonded CO in the blends increased with BPA content and leveled off at a value close to 40 %. Finally, FTIR–temperature measurements of pure PPC and a representative blend were reported: by monitoring the peak areas of CO absorptions, the dissociation of the inter‐H‐bonds and the thermal degradation of PPC were observed. It revealed that the presence of BPA clearly retarded the thermal degradation of PPC. Copyright © 2004 Society of Chemical Industry |
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ISSN: | 0959-8103 1097-0126 |
DOI: | 10.1002/pi.1633 |