Synthesis of polycaprolactone: A review
Abstract
Polycaprolactone (PCL) is an important polymer due to its mechanical properties, miscibility with a large range of other polymers and biodegradability. Two main pathways to produce polycaprolactone have been described in the literature: the polycondensation of a hydroxycarboxylic acid: 6-hydroxyhexanoic acid, and the ring-opening polymerisation (ROP) of a lactone: epsilon-caprolactone (epsilon-CL). This critical review summarises the different conditions which have been described to synthesise PCL, and gives a broad overview of the different catalytic systems that were used (enzymatic, organic and metal catalyst systems). A surprising variety of catalytic systems have been studied, touching on virtually every section of the periodic table. A detailed list of reaction conditions and catalysts/initiators is given and reaction mechanisms are presented where known. Emphasis is put on the ROP pathway due to its prevalence in the literature and the superior polymer that is obtained. In addition, ineffective systems that have been tried to catalyse the production of PCL are included in the electronic supplementary information for completeness (141 references).
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PCL has emerged as a promising synthetic biomaterial for postoperative anti-adhesion barrier films due to its biodegradability, mechanical flexibility, and controlled degradation rate.
“Polycaprolactone (PCL) has emerged as a promising synthetic biomaterial for postoperative anti-adhesion barrier films due to its biodegradability, mechanical flexibility, and controlled degradation rate [192].”
From Biomaterials in Postoperative Adhesion Barriers and Uterine Tissue Engineering (2025) · cites this paper as [192]
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- Authors
- Labet, M., & Thielemans, W.
- Affiliations
- University of Nottingham (GB)
- Corresponding author
- Thielemans, Wim
- Venue
- Chemical Society Reviews
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2009
- Volume
- 38
- Issue
- 12
- Pages
- 3484
- ISSN
- 0306-0012 (ISSN-L)
- 1460-4744
- OpenAlex
- W2151585742
- Cited by
- 1,673
- References
- 4
- Citations by year
- 2026: 77 · 2025: 144 · 2024: 132 · 2023: 138 · 2022: 153 · 2021: 148 · 2020: 136 · 2019: 99 · 2018: 116 · 2017: 106 · 2016: 91 · 2015: 98 · 2014: 70 · 2013: 58 · 2012: 50
- FWCI
- 1.75
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Chemical Society Reviews (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Carbon dioxide utilization in catalysis
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Keywords
- polycaprolactone, ε-caprolactone, ring-opening polymerization, polycondensation, 6-hydroxyhexanoic acid, polymer synthesis, catalytic systems, enzymatic catalysts, metal catalysts, organic catalysts, initiators, reaction mechanism, biodegradable polymers
- MeSH terms
- Polyesters, Stereoisomerism, Molecular Structure, Tissue Scaffolds
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