A new insight into morphological, thermal, and mechanical properties of melt-processed polylactide/poly( ε -caprolactone) blends
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PLA and PCL are inherently immiscible due to differences in polarity and crystallinity, which results in phase-separated morphologies.
“PLA, characterized by high stiffness and brittleness, and PCL, known for its flexibility and toughness, are inherently immiscible due to differences in polarity and crystallinity, which results in phase-separated morphologies [26,27,88,89].”
The stiffness and tensile strength of PLA/PCL blends tend to decrease proportionally with increasing PCL content.
“while the stiffness and tensile strength tend to decrease proportionally with increasing PCL content [89].”
The addition of PCL generally improves the elongation at break and impact strength of PLA, mitigating its brittleness.
“The literature reports that the addition of PCL generally improves the elongation at break and impact strength of PLA, mitigating its brittleness”
At higher PCL loadings (>30 wt.%), co-continuous morphologies can form, resulting in balanced stiffness and toughness.
“At higher PCL loadings (>30 wt.%), co-continuous morphologies can form (Figure 4), resulting in balanced stiffness and toughness [89].”
PLA/PCL blends maintain biodegradability and have been investigated for applications in packaging and biomedical devices.
“Furthermore, PLA/PCL blends maintain biodegradability and have been investigated for applications in packaging and biomedical devices [27,89].”
Reinforcement strategies improve interfacial adhesion, dispersion, and composite functionality in PLA/PCL-based composites.
“The literature shows that reinforcement strategies improve interfacial adhesion, dispersion, and composite functionality [24,27,31,32,33,34,89].”
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- Authors
- Botlhoko, O. J., Ramontja, J., & Ray, S. S.
- Affiliations
- Council for Scientific and Industrial Research (ZA)
- University of Johannesburg (ZA)
- Corresponding author
- Ray, Suprakas Sinha
- Venue
- Polymer Degradation and Stability
- Publisher
- Elsevier BV
- Published
- 2018-08
- Volume
- 154
- Pages
- 84-95
- ISSN
- 0141-3910 (ISSN-L)
- OpenAlex
- W2804085111
- Cited by
- 81
- References
- 40
- Citations by year
- 2026: 5 · 2025: 21 · 2024: 13 · 2023: 14 · 2022: 3 · 2021: 4 · 2020: 9 · 2019: 10 · 2018: 2
- FWCI
- 2.02
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Polymer Degradation and Stability (publishedVersion)
- Funders
- National Research Foundation, South Africa (111266)
- Department of Science and Technology (HGERA8X)
- Council for Scientific and Industrial Research (HGERA54S)
- Topics
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
- Keywords
- polylactic acid, polycaprolactone, immiscible polymer blends, melt blending, dispersed phase morphology, thermal stability, degradation mechanism, activation energy, crystallization kinetics, nucleating agents, spherulite morphology, mechanical properties, storage modulus, biodegradable polymers
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