Cited by 222biodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysisAdvanced Polymer Synthesis and Characterization

Random Copolymerization of ε-Caprolactone with Lactide Using a Homosalen−Al Complex

Nomura, Nobuyoshi, Akita, Azusa, Ishii, Ryohei, Mizuno, Mitsunori·2010·Journal of the American Chemical Society

Abstract

The bulky substituents of homosalen complexes decelerate the ring-opening polymerization of racemic lactide (LA). The substituent effects provide the first catalysis for the random copolymerization of epsilon-caprolactone (CL) with LA (CL/LA = 1:1). The copolymerization of CL with LA (CL/LA = 1:1) by the iPr(3)Si-substituted homosalen-Al complex 2 affords the practically random copolymer in a controlled manner. The reactivity ratios, average sequence lengths of CL and LA during the copolymerization, abundance ratios of the triad caproyl sequences, and T(g) value of the obtained copolymer indicate that the copolymer was random with a somewhat alternative tendency (r(CL)r(LA) = 0.80).

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Crossref · 10.1021/ja9089395

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Authors
Nomura, N., Akita, A., Ishii, R., & Mizuno, M.
Affiliations
  • Nagoya University (JP)
  • Laboratory of Polymer Chemistry, Graduate School of Bioagricultural Sciences, E1-1(300), Nagoya University, Nagoya 464-8601, Japan
Corresponding author
Nomura, Nobuyoshi
Venue
Journal of the American Chemical Society
Published
2010-01-25
Volume
132
Issue
6
Pages
1750-1751
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2066787931
Cited by
222
References
43
Citations by year
2026: 9 · 2025: 10 · 2024: 9 · 2023: 11 · 2022: 10 · 2021: 15 · 2020: 15 · 2019: 14 · 2018: 10 · 2017: 17 · 2016: 13 · 2015: 11 · 2014: 17 · 2013: 22 · 2012: 20
FWCI
8.06
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of the American Chemical Society (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 › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
Keywords
random copolymerization, ε-caprolactone, lactide, ring-opening polymerization, substituent effects, reactivity ratios, sequence distribution, copolymer microstructure, glass transition temperature, polycaprolactone, polylactic acid
MeSH terms
Aluminum, Caproates, Dioxanes, Ethylenediamines, Lactones, Magnetic Resonance Spectroscopy, Organometallic Compounds, Polymers

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