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Effect of chain extender on the morphological, rheological and mechanical properties of biodegradable blends from PBAT and P34HB.
- Source :
-
Journal of Polymer Research . Oct2023, Vol. 30 Issue 10, p1-16. 16p. - Publication Year :
- 2023
-
Abstract
- The inherent shortcomings of fully biodegradable poly(butylene adipate-co-terephthalate) (PBAT) copolyesters including low strength, modulus, and melt viscoelasticity were addressed by melt blending of PBAT with high-stiffness and biological poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P34HB). An epoxy-based chain extender was used to increase interfacial adhesion of partially miscible PBAT/P34HB (70wt/30wt) blends. The addition of chain extender refined phase-separated morphology of blends from SEM and decreased the degree of crystallinity by DSC. Compared with neat PBAT, PBAT/P34HB blends with chain extender showed much higher melt viscosity and elasticity, as indicated by rheological properties analyses. Compared with the PBAT/P34HB blend without chain extender, the breaking strength and elongation at break of PBAT/P34HB blend with incorporation of 1 wt% ADR were increased by 91.8% and 58.7%, respectively. It could be concluded that the combination of blending and chain-extension reaction simultaneously improved the strength, elongation at break, and melt viscoelasticity, which contributed to the suitability of biodegradable polymer blends for a wider range of end-use applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RHEOLOGY
*POLYBUTENES
*POLYMER blends
*VISCOELASTICITY
*ELASTICITY
*VISCOSITY
*BUTENE
Subjects
Details
- Language :
- English
- ISSN :
- 10229760
- Volume :
- 30
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of Polymer Research
- Publication Type :
- Academic Journal
- Accession number :
- 173152862
- Full Text :
- https://doi.org/10.1007/s10965-023-03775-7