Polylactide-based amphiphilic block copolymers
- The aqueous self-assembly behavior of a series of poly(ethylene glycol)-poly(l-/d-lactide) block copolymers and corresponding stereocomplexes is examined by differential scanning calorimetry, dynamic light scattering, and transmission electron microscopy. Block copolymers assemble into spherical micelles and worm-like aggregates at room temperature, whereby the fraction of the latter seemingly increases with decreasing lactide weight fraction or hydrophobicity. The formation of the worm-like aggregates arises from the crystallization of the polylactide by which the spherical micelles become colloidally unstable and fuse epitaxically with other micelles. The self-assembly behavior of the stereocomplex aggregates is found to be different from that of the block copolymers, resulting in rather irregular-shaped clusters of spherical micelles and pearl-necklace-like structures.
Author details: | Sebastian NoackORCiDGND, Dirk SchanzenbachORCiDGND, Joachim KoetzORCiDGND, Helmut SchlaadORCiDGND |
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DOI: | https://doi.org/10.1002/marc.201800639 |
ISSN: | 1022-1336 |
ISSN: | 1521-3927 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/30318781 |
Title of parent work (English): | Macromolecular rapid communications |
Subtitle (English): | Crystallization-Induced Self-Assembly and Stereocomplexation |
Publisher: | Wiley-VCH |
Place of publishing: | Weinheim |
Publication type: | Article |
Language: | English |
Date of first publication: | 2018/10/15 |
Publication year: | 2018 |
Granting institution: | Universität Potsdam |
Release date: | 2021/05/21 |
Tag: | crystallization; polylactide; self-assembly; stereocomplexation |
Volume: | 40 |
Issue: | 1 |
Number of pages: | 6 |
Funding institution: | University of Potsdam |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
Peer review: | Referiert |