Synthesis of bio-based poly(diethylene furanoate)-block-polylactide copolymers with UV blocking properties

Molnár, Judit Rebeka; Hsu, Yu I.; Uyama, Hiroshi

Polymer Degradation and Stability, 2025, 238, 111342

Number of Access:215（2025-08-28 23:13 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/101391

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Title
Synthesis of bio-based poly(diethylene furanoate)-block-polylactide copolymers with UV blocking properties
Creator
CreatorName
Molnár, Judit Rebeka
NRID
1000010757678 1000010757678
ORCID
0000-0002-4533-7200 0000-0002-4533-7200
researchmap permalink
yuihsu yuihsu
Scopus Author ID
55389981500 55389981500
CreatorName
Hsu, Yu I.
NRID
1000070203594 1000070203594
ORCID
0000-0002-8587-2507 0000-0002-8587-2507
researchmap permalink
read0168389 read0168389
Scopus Author ID
7102108908 7102108908
CreatorName
Uyama, Hiroshi
Subject
Biopolymer
Polylactic acid
Poly(diethylene 2,5-furanoate)
2,5-furandicarboxylic acid
multiblock copolymer
UV blocking
Ring-opening polymerization
Description
Molnár J.R., Hsu Y.I., Uyama H.. Synthesis of bio-based poly(diethylene furanoate)-block-polylactide copolymers with UV blocking properties. Polymer Degradation and Stability 238, 111342 (2025); https://doi.org/10.1016/j.polymdegradstab.2025.111342.
Abstract
The transition to a circular economy requires the development of bio-based polymers with enhanced functionality to compete with conventional oil-sourced materials. In this study, a bio-based furandicarboxylic acid-containing polyester, poly(diethylene furanoate) (PDEF) was directly copolymerized with polylactide (PLA) for the first time, through the polycondensation of dimethyl furan-2,5-dicarboxylate (MFDC) and diethylene glycol (DEG), used as an initiator for the ring-opening polymerization (ROP) of lactide, followed by chain extension reaction with hexamethylene diisocyanate (HDI) to obtain poly(diethylene furanoate)-block-polylactide (PDEF-b-PLA) alternating multiblock copolymers. The PDEF synthesized with different reaction times exhibited an average glass transition temperature (Tg) of 33.8 °C. The copolymers had PLA segment lengths of 1000 and 300 g/mol after ROP maintaining an amorphous structure with a Tg of 34.5 and 33.3 °C respectively, suggesting easy processability. Thermal stability of the copolymers was enhanced, indicated by increased decomposition temperatures and residual weight compared to neat PLA. PDEF displayed elastomer-like behavior while the copolymerization resulted in an intermediate behavior between PDEF and semi-crystalline PLA, with a high Young's modulus of 1.7 and 1.4 GPa, a balanced tensile stress at yield of 24.3 and 28.9 MPa and a significantly increased elongation at break, by 700–1100 % compared to neat PLA. All PDEF-containing samples demonstrated excellent UV-blocking ability due to the furan moiety, effectively blocking UV radiation below 300 nm while maintaining transparency in the visible range. These bio-based PDEF-b-PLA copolymers offer a sustainable alternative for applications such as food packaging and coatings, where thermal stability, mechanical resilience and UV protection are essential.
Publisher
Elsevier Ltd
Source Title
Polymer Degradation and Stability
Volume (Issue)
238
Page
111342
Date of Issued
2025-04-01
Language
English
Handle URL
https://hdl.handle.net/11094/101391
PISSN
01413910
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.polymdegradstab.2025.111342
Access Rights
open access
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This article is licensed under a Creative Commons Attribution 4.0 International License.
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Category
学術雑誌論文 Journal Article