Abstract
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 O-H groups and PPC C=O 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 C=O groups were nearly equal. The fraction of H-bonded C=O 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 C=O 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.
Original language | English |
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Pages (from-to) | 2092-2098 |
Number of pages | 7 |
Journal | Polymer International |
Volume | 53 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Dec 2004 |
Externally published | Yes |
Keywords
- Blends
- Degradation
- FTIR
- Poly(propylene carbonate)
ASJC Scopus subject areas
- Polymers and Plastics