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Enhancing mechanical and shape memory properties of polylactide/polyamide elastomer blends via reactive blending with a chain extender.
- Source :
- Journal of Applied Polymer Science; Apr2024, Vol. 141 Issue 15, p1-11, 11p
- Publication Year :
- 2024
-
Abstract
- The structure and properties of incompatible polylactide (PLA)/polyamide elastomer (PAE) blends were tailored by a chain extender specifically the styrene–glycidyl acrylate copolymer Joncryl ADR4368 (ADR). Various PLA/PAE/ADR blends with different compositions were prepared by melt blending, and their morphology, crystallization behavior, and mechanical and the shape memory properties were systematically investigated. The results showed a uniform dispersion of PAE particles in the PLA matrix for the PLA blends with a reduction in particle size upon the addition of ADR. The crystallization of PLA was retarded, which was confirmed by a decrease in the melt crystallization temperature and an increase in cold crystallization temperature in the PLA/PAE/ADR blends. Rheological analysis showed an improvement in the melt elasticity of the PLA/PAE binary blend due to the presence of ADR, possibly attributed to the formation of long‐chain‐branched copolymers at the interface. Notably, the PLA/PAE/ADR blend exhibited superior toughness, featuring an elongation at break of 288% and a notched impact strength of 37 kJ·m−2, along with a high shape memory fixation rate and recovery rate when the ADR content was 1 wt%. Furthermore, the underlying toughening mechanism was elucidated. This work may offer an industrially scalable relevant model to fabricate high‐performance PLA materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218995
- Volume :
- 141
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Journal of Applied Polymer Science
- Publication Type :
- Academic Journal
- Accession number :
- 175947537
- Full Text :
- https://doi.org/10.1002/app.55229