Toughening of polylactic acid: an overview of research progress
Abstract
To overcome the limitations of polylactic acid, alterations are needed to enhance its toughness, to improve handling and for various applications. Extensive studies were reported, mainly in the area of blends with renewable resource polymer blends. Better phase dispersion between the blend materials is achieved either by reactive mixing of the two components or by incorporation of a block copolymer compatibilizer, finally showing highly enhanced property. In this article, the recent research progress of different toughening processes of PLA via blending is reviewed and a detailed understanding about toughening of PLA using biodegradable or renewable polymers has been established.
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Commercial PLAs are semicrystalline with melting temperature between 140 and 180 °C depending on enantiomeric purity and glass transition temperature usually ranging from 55 to 65 °C.
“Therefore, commercial PLA's are semicrystalline with melting temperature, T m , between 140 and 180 • C in dependence on the enantiomeric purity (Fambri and Migliaresi, 2010) and glass transition temperature, T g , which usually ranges from 55 to 65 • C (Auras et al., 2004;Krishnan et al., 2016).”
From Phase Structure, Compatibility, and Toughness of PLA/PCL Blends: A Review (2019) · cites this paper as Krishnan et al., 2016
PCL is a soft, biocompatible and biodegradable semicrystalline polyester with a rubbery amorphous phase at room temperature.
“Poly(ε-caprolactone) (PCL) is soft, biocompatible and biodegradable semicrystalline polyester (Pitt, 1990;Krishnan et al., 2016) with a rubbery amorphous phase at room temperature as its T g is around -60 • C and its melting temperature is in the range of 55-70 • C.”
From Phase Structure, Compatibility, and Toughness of PLA/PCL Blends: A Review (2019) · cites this paper as Krishnan et al., 2016
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References 216 · Cited by 147
- Authors
- Krishnan, S., Pandey, P., Mohanty, S., & Nayak, S. K.
- Affiliations
- Central Institute of Plastics Engineering and Technology (IN)
- Corresponding author
- Mohanty, Smita
- ORCID
- Mohanty, Smita
- Venue
- Polymer-Plastics Technology and Engineering
- Publisher
- Informa UK Limited
- Published
- 2015-11-05
- Volume
- 55
- Issue
- 15
- Pages
- 1623-1652
- ISSN
- 0360-2559 (ISSN-L)
- 1525-6111
- OpenAlex
- W2144119283
- Cited by
- 147
- References
- 216
- Citations by year
- 2026: 8 · 2025: 16 · 2024: 28 · 2023: 18 · 2022: 20 · 2021: 14 · 2020: 13 · 2019: 14 · 2018: 9 · 2017: 6 · 2016: 1
- FWCI
- 1.93
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Polymer-Plastics Technology and Engineering (publishedVersion)
- 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 › Polymers and Plastics › Natural Fiber Reinforced Composites
- Keywords
- polylactic acid, toughening, polymer blends, bio-based polymers, biodegradable polymers, reactive blending, phase dispersion
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