Abstract
Properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were significantly modified by a hydrogen bonding (H-bond) monomer-bisphenol A (BPA). BPA lowered the Tmof PHBV and widened the heat-processing window of PHBV. At the same time, a dynamic H-bond network in the blends was observed indicating that BPA acted as a physical cross-link agent. BPA enhanced the Tgof PHBV and reduced the crystallization rate of PHBV. It resulted in larger crystallites in PHBV/BPA blends showed by WAXD. However, the crystallinity of PHBV was hardly reduced. SAXS results suggested that BPA molecules distributed in the inter-lamellar region of PHBV. Finally, a desired tension property was obtained, which had an elongation at break of 370% and a yield stress of 16 MPa. By comparing the tension properties of PHBV/BPA and PHBV/tert-butyl phenol blends, it was concluded that the H-bond network is essential to the improvement of ductility.
Original language | English |
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Pages (from-to) | 6275-6284 |
Number of pages | 10 |
Journal | Polymer |
Volume | 45 |
Issue number | 18 |
DOIs | |
Publication status | Published - 19 Aug 2004 |
Keywords
- Bisphenol A
- Hydrogen bond network
- PHBV
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry