Cited by 193biodegradable polymer synthesis and propertiesPolymer crystallization and propertiesBlock Copolymer Self-Assembly

Optimising Ductility of Poly(Lactic Acid)/Poly(Butylene Adipate-co-Terephthalate) Blends Through Co-continuous Phase Morphology

Open access
Deng, Yixin, Yu, Changyi, Wongwiwattana, Peangpatu, Thomas, Noreen L.·2018·Journal of Polymers and the Environment

Abstract

This paper examines the effect of the melt viscosities of the two component polymers on the morphology and mechanical properties of a series of biodegradable polymer blends. Melt blended compounds of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) are prepared and their melt viscosities, thermal properties, crystallinity, mechanical properties and phase morphology are investigated. From the relative melt viscosities of PLA and PBAT in the processing regime used in the study, it is possible to calculate the volume fraction at which a co-continuous phase structure is formed. The predicted value is 19 wt% of PBAT and this value is verified by the results of mechanical properties, where results for elongation-to-break show a dramatic rise from around 10% up to 300% in the composition range between 10 and 20 wt% of PBAT. The co-continuous phase structure is also validated by scanning electron microscopy. Graphical Abstract

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Crossref · 10.1007/s10924-018-1256-x

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  • PBAT/PLA (70/30) blend panel presents lower tensile strength compared with (100/0), (90/10) and (50/50) panel samples.

    “Compared with these three samples, the (70/30) blend panel presents lower tensile strength, which matches the results of Deng et al. [8].”

    From Uncompatibilized PBAT/PLA Blends: Manufacturability, Miscibility and Properties (2020) · cites this paper as [8]

    The Tensile Test Results section states that tensile strength decreases as PBAT content increases. For the stated PBAT/PLA ratios, that trend is consistent with 70/30 being weaker than 50/50, but contrary to it being weaker than 90/10 or 100/0. The Sample Preparation section also shows that the paper did not test a 70/30 blend. (LLM, conf=0.83)

    Checked by a reasoning model — may be wrong.

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  • Melt blending is a method to mix polymers without chemical reactions taking place.

    “Melt blending is a method to mix some polymers without chemical reactions taking place [8].”

    From Uncompatibilized PBAT/PLA Blends: Manufacturability, Miscibility and Properties (2020) · cites this paper as [8]

    The Sample Preparation section describes melt blending PLA and PBAT in a mixer that promotes mixing. Neither that section nor the Introduction establishes that chemical reactions do not take place during melt blending, so the no-reaction part of the claim is unsupported. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The ∆Tg difference between blends is not higher than 3.5 °C.

    “The ∆Tg difference between blends is not higher than 3.5 °C, which agrees with the previous research results [8,11].”

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Cites

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Research works printed but not linked: 2

  1. Amass WA, Tighe B (1998) A review of biodegradable poly- mers: uses, current developments in the synthesis and charac- terization of biodegradable polyesters, blends of biodegradable polymers and recent advances in biodegradation studies. Polym Int 47(2):89-144
  2. Liu H, Zhang J (2011) Research progress in toughening modifi- cation poly (lactic acid). J Polym Sci Part B 49(15):1051-1083

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Authors
Deng, Y., Yu, C., Wongwiwattana, P., & Thomas, N. L.
Affiliations
Loughborough University (GB)
Corresponding author
Thomas, Noreen L.
Venue
Journal of Polymers and the Environment
Published
2018-06-01
Volume
26
Issue
9
Pages
3802-3816
ISSN
  • 1064-7546 (ISSN-L)
  • 1566-2543
  • 1572-8919
OpenAlex
W2806219867
Cited by
193
References
34
Citations by year
2026: 22 · 2025: 31 · 2024: 39 · 2023: 32 · 2022: 22 · 2021: 18 · 2020: 23 · 2019: 5 · 2018: 1
FWCI
3.81
Type
journal article
Language
en
Open access
Locations
  • Journal of Polymers and the Environment (publishedVersion, cc-by)
  • Loughborough University Institutional Repository (Loughborough University) (submittedVersion, cc-by)
  • Loughborough University Research Repository (Loughborough University) (submittedVersion, cc-by)
Funders
Loughborough University
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, poly(butylene adipate-co-terephthalate), polymer blends, co-continuous morphology, ductility, melt viscosity, biodegradable polymers, elongation at break, volume fraction, crystallinity, mechanical properties

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