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Patchy stereocomplex micelles as efficient compatibilizers for polymer blends

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00008131
URN to cite this document: urn:nbn:de:bvb:703-epub-8131-1

Title data

Schaller, Roman ; Schmidt, Marius ; Schweimer, Kristian ; Schmalz, Holger:
Patchy stereocomplex micelles as efficient compatibilizers for polymer blends.
In: Polymer Chemistry. Vol. 15 (2024) Issue 30 . - pp. 3100-3112.
ISSN 1759-9954
DOI der Verlagsversion: https://doi.org/10.1039/D4PY00449C

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Project information

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Project's official title
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SCHM2428/3-1

Project financing: Deutsche Forschungsgemeinschaft
Surface-Compartmentalized Micelles by Stereocomplex-Driven Self-Assembly

Abstract

Surface-compartmentalized polymer micelles (Janus and patchy micelles) have gained increasing attention as their unique properties open the way for various applications. While Janus micelles have been extensively studied, e.g. as compatibilizers in polymer blends, there are hardly any reports on the use of patchy micelles. In this study, we show that spherical micelles with a polylactide stereocomplex (SC) core and a patch-like microphase separated polystyrene/poly(tert-butyl methacrylate) (PS/PtBMA) corona are efficient compatibilizers for highly immiscible PS/PtBMA blends. The patchy SC micelles, prepared by stereocomplex-driven self-assembly (SCDSA) of enantiomeric diblock copolymers, improved the homogeneity of the blends and led to a significant reduction of the PS droplet size. We further employed SCDSA to selectively incorporate a fluorescent dye inside the SC micelle core without changing the shape or chemistry of the patchy corona. This allows the use of confocal scanning fluorescence microscopy to localize the patchy SC micelles, being predominantly assembled at the PS/PtBMA blend interface. Interestingly, the reduction in PS droplet size was comparable for blends compatibilized with patchy SC micelles and Janus micelles, but only for patchy SC micelles a monomodal droplet size distribution could be achieved. The outstanding interfacial activity of the patchy SC micelles can be attributed to their adaptive corona structure, resulting in a selective swelling/collapse of the respective miscible/immiscible corona patches at the blend inter-face.

Further data

Item Type: Article in a journal
DDC Subjects: 500 Science > 540 Chemistry
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry IV - Biophysical Chemistry
Profile Fields > Advanced Fields > Polymer and Colloid Science
Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Affiliated Institutes
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-8131-1
Date Deposited: 16 Jan 2025 07:19
Last Modified: 16 Jan 2025 07:19
URI: https://epub.uni-bayreuth.de/id/eprint/8131

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