Cited by 179biodegradable polymer synthesis and propertiesPolymer composites and self-healingAdvanced Polymer Synthesis and Characterization

The Quest for Converting Biorenewable Bifunctional α-Methylene-γ-butyrolactone into Degradable and Recyclable Polyester: Controlling Vinyl-Addition/Ring-Opening/Cross-Linking Pathways

Tang, Xiaoyan, Hong, Miao, Falivene, Laura, Caporaso, Lucia, Cavallo, Luigi, Chen, Eugene Y.-X.·2016·Journal of the American Chemical Society

Abstract

α-Methylene-γ-butyrolactone (MBL), a naturally occurring and biomass-sourced bifunctional monomer, contains both a highly reactive exocyclic C═C bond and a highly stable five-membered γ-butyrolactone ring. Thus, all previous work led to exclusive vinyl-addition polymerization (VAP) product P(MBL) VAP . Now, this work reverses this conventional chemoselectivity to enable the first ring-opening polymerization (ROP) of MBL, thereby producing exclusively unsaturated polyester P(MBL) ROP with M n up to 21.0 kg/mol. This elusive goal was achieved through uncovering the thermodynamic, catalytic, and processing conditions. A third reaction pathway has also been discovered, which is a crossover propagation between VAP and ROP processes, thus affording cross-linked polymer P(MBL) CLP . The formation of the three types of polymers, P(MBL) VAP, P(MBL) CLP, and P(MBL) ROP, can be readily controlled by adjusting the catalyst (La)/initiator (ROH) ratio, which is determined by the unique chemoselectivity of the La–X (X = OR, NR 2, R) group. The resulting P(MBL) ROP is degradable and can be readily postfunctionalized into cross-linked or thiolated materials but, more remarkably, can also be fully recycled back to its monomer thermochemically. Computational studies provided the theoretical basis for, and a mechanistic understanding of, the three different polymerization processes and the origin of the chemoselectivity.

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Crossref · 10.1021/jacs.6b07974

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  • These monomers can undergo polymerizations at both the alkene and ester site, making them potential substitutes for petroleum-based polyacrylates and polyesters.

    “These monomers can undergo polymerizations at both the alkene and ester site, making them potential substitutes for petroleum-based polyacrylates and polyesters.176,177”

    From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [177]

  • Using similar conditions (-60 °C, Ln/ROH = 1/3) to that of γ-BL, they were able to achieve the selective ROP of MBL to produce poly(MBL) with Mn up to 21 kDa, which can be facilely recycled back to the monomer MBL by heating the polymer ≥ 100 °C for 1 h in the presence of catalysts.

    “Using similar conditions (-60 °C, Ln/ROH = 1/3) to that of γ-BL, they were able to achieve the selective ROP of MBL to produce poly(MBL) with Mn up to 21 kDa, which can be facilely recycled back to the monomer MBL by heating the polymer ≥ 100 °C for 1 h in the presence of catalysts.”

    From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [177]

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Authors
Tang, X., Hong, M., Falivene, L., Caporaso, L., Cavallo, L., & Chen, E. Y.-X.
Affiliations
  • Colorado State University (US)
  • King Abdullah University of Science and Technology (SA)
  • University of Salerno (IT)
Corresponding author
  • Cavallo, Luigi
  • Chen, Eugene Y.-X.
Venue
Journal of the American Chemical Society
Published
2016-10-19
Volume
138
Issue
43
Pages
14326-14337
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2529856920
Cited by
179
References
91
Citations by year
2026: 10 · 2025: 16 · 2024: 28 · 2023: 25 · 2022: 25 · 2021: 16 · 2020: 13 · 2019: 13 · 2018: 19 · 2017: 13
FWCI
6.14
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of the American Chemical Society (publishedVersion)
  • PubMed (publishedVersion)
  • King Abdullah University of Science and Technology Repository (King Abdullah University of Science and Technology) (submittedVersion)
Funders
  • Division of Chemistry (1300267)
  • King Abdullah University of Science and Technology
Topics
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
Keywords
α-methylene-γ-butyrolactones, ring-opening polymerization, vinyl addition polymerization, polymer networks, chemoselectivity, lanthanum catalyst, bio-based monomers, degradable polyesters, thiolation, polymerization mechanism, biomass-derived polymers
MeSH terms
Alkenes, Models, Molecular, Molecular Conformation, Polyesters, Thermodynamics, 4-Butyrolactone, Polymerization

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