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Fabrication of biodegradable poly (lactic acid)/carbon nanotube nanocomposite foams: Significant improvement on rheological property and foamability
Abstract
Recently, biodegradable macromolecules have been highly desired as a promising alternative for traditional oil-based plastics to work out the eco crisis and biological health problems triggered by microplastics. Herein, we presented a simple, effective, environmentally friendly and CO 2-based foaming methodology for fabricating ultra-low-density poly (lactic acid)/carbon nanotube (PLA/CNTs) nanocomposite foam. By the gradual incorporation of CNTs, three kinds of networks generated in PLA/CNTs nanocomposites and had a distinct reinforcement influence on their melt viscoelasticity, which testified by transmission electron microscope, electrical conductivity and rheological property measurements, severally. Specifically, the storage modulus of PLA/CNTs nanocomposites were 3 orders of magnitude higher in contrast to pure PLA. Interestingly, relative to that under regular differential scanning calorimetry (DSC), a double melting peak phenomenon appeared in the high-pressure DSC curves of diverse PLA specimens. Biodegradable PLA/CNTs nanocomposite foam was successfully fabricated with a super-high volume expansion ratio (VER) of 49.6 times, which could offer a promising strategy for developing other thermoplastic polyester foams with ultra-high VER to obtain some unique functional attributes.
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“ScCO₂ method eliminates the need for organic solvents and involves low processing temperatures [116].”
From Application of PLCL as a biodegradable polymer in biomedical engineering (2026) · cites this paper as [116]
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Sorted by citations
Application of PLCL as a biodegradable polymer in biomedical engineering
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Metadata
- Authors
- Li, Y., Yin, D., Liu, W., Zhou, H., Zhang, Y., & Wang, X.
- Affiliations
- Beijing Technology and Business University (CN)
- Guizhou Institute of Technology (CN)
- Corresponding author
- Zhou, Hongfu
- Venue
- International Journal of Biological Macromolecules
- Publisher
- Elsevier BV
- Published
- 2020-11
- Volume
- 163
- Pages
- 1175-1186
- ISSN
- 0141-8130 (ISSN-L)
- OpenAlex
- W3042221342
- Cited by
- 91
- References
- 61
- Citations by year
- 2026: 8 · 2025: 12 · 2024: 13 · 2023: 18 · 2022: 24 · 2021: 15 · 2020: 1
- FWCI
- 5.50
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Biological Macromolecules (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (51703004, 51703039)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer Foaming and Composites
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Keywords
- polylactic acid, carbon nanotubes, nanocomposite foams, biodegradable foams, melt viscoelasticity, storage modulus, foaming properties, volume expansion ratio, double melting peak, electrical conductivity
- MeSH terms
- Calorimetry, Differential Scanning, Electric Conductivity, Polyesters, Polymers, Rheology, Temperature, Viscosity, Nanotubes, Carbon, Nanocomposites, Biodegradable Plastics
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