The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
Synthesis and properties of (D)‐ and (L)‐lactide stereocopolymers using the system achiral Schiff's base/aluminium methoxide as initiator
Abstract
The polymerization of lactides with various D/L enantiomeric compositions using achiral Schiff's base/aluminium methoxide as initiator (SALENAlOCH 3) in dichloromethane solution at 70°C is reported. The conversion was kept below 70% in order to limit transesterification reactions. The polymers obtained after precipitation show a narrow molecular weight distribution (ratio of weight‐ to number‐average molecular weights Mw/Mn = 1,1–1,2) and an optical rotation higher than that expected from the optical purity of the starting monomers. The examination of the thermal properties reveals that whatever their enantiomeric composition all the prepared polymers are crystalline. This unusual behavior is explained by an end‐chain propagation mechanism producing stereocopolymers with long enantiomeric sequences, i.e., increased isotacticity as substantiated by an examination of the microstructure of the polymers by means of 13 C nuclear magnetic resonance. A stereocomplex formation was observed for stereocopolymers with optical purities below 40%.
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Citations
Cites
Stereocomplex formation between enantiomeric poly(lactides)
Ikada, Y., Jamshidi, K., Tsuji, H., & Hyon, S. H. (1987) · Macromolecules · doi:10.1021/ma00170a034 · Cited by 1,409
Thermal characterization of polylactides
Jamshidi, K., Hyon, S.-H., & Ikada, Y. (1988) · Polymer · doi:10.1016/0032-3861(88)90116-4 · Cited by 692
Kricheldorf, H. R., Berl, M., & Scharnagl, N. (1988) · Macromolecules · doi:10.1021/ma00180a002 · Cited by 597
Coordination polymerization of lactides, 1. Structure determination of obtained polymers
Bero, M., Kasperczyk, J., & Jedlinski, Z. J. (1990) · Die Makromolekulare Chemie · doi:10.1002/macp.1990.021911007 · Cited by 190
Cited by
An Overview of Polylactides as Packaging Materials
Auras, R., Harte, B., & Selke, S. (2004) · Macromolecular Bioscience · doi:10.1002/mabi.200400043 · Cited by 3,454
Polymeric systems for controlled drug release
Uhrich, K. E., Cannizzaro, S. M., Langer, R. S., & Shakesheff, K. M. (1999) · Chemical Reviews · doi:10.1021/cr940351u · Cited by 2,633
Controlled Ring-Opening Polymerization of Lactide and Glycolide
Dechy-Cabaret, O., Martin-Vaca, B., & Bourissou, D. (2004) · Chemical Reviews · doi:10.1021/cr040002s · Cited by 2,257
Poly(lactic acid) crystallization
Saeidlou, S., Huneault, M. A., Li, H., & Park, C. B. (2012) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2012.07.005 · Cited by 1,606
Poly(lactide) Stereocomplexes: Formation, Structure, Properties, Degradation, and Applications
Tsuji, H. (2005) · Macromolecular Bioscience · doi:10.1002/mabi.200500062 · Cited by 1,366
Metadata
- Authors
- Wisniewski, M., Borgne, A. L., & Spassky, N.
- Venue
- Macromolecular Chemistry and Physics
- Publisher
- Wiley
- Published
- 1997-04
- Volume
- 198
- Issue
- 4
- Pages
- 1227-1238
- ISSN
- 1022-1352 (ISSN-L)
- 1521-3935
- OpenAlex
- W2024025852
- Cited by
- 162
- References
- 4
- FWCI
- 3.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wisniewski, M., Borgne, A. L., & Spassky, N. (1997). Synthesis and properties of (D)‐ and (L)‐lactide stereocopolymers using the system achiral Schiff's base/aluminium methoxide as initiator. Macromolecular Chemistry and Physics. https://doi.org/10.1002/macp.1997.021980424
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