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Marschelke, Claudia ; Puretskiy, Nikolay ; Raguzin, Ivan ; Melnyk, Inga ; Ionov, Leonid ; Synytska, Alla:
Effect of Architecture of Thermoresponsive Copolymer Brushes on Switching of Their Adsorption Properties.
In: Macromolecular Chemistry and Physics.
Bd. 220
(2019)
Heft 10
.
- 1900030.
ISSN 1521-3935
DOI: https://doi.org/10.1002/macp.201900030
Abstract
Herein, the effect of architecture of stimuli-responsive polymer brushes on the switching of colloidal particle adsorption is reported. Thermoresponsive copolymer brushes containing positively charged amino groups are used and investigated how negatively charged colloidal particles electrostatically adsorb onto them. The distribution of charged groups (block or random copolymer architecture) and the conformation of the polymer chains (extended or collapsed state) are varied. It is found that the strongest adsorption is achieved at high fractions of charged groups in the brushes, while the amount of adsorbed particles is independent of the polymer chain conformation; that is, the adsorption of particles cannot be switched. On the contrary to this, the most pronounced switching of adsorption is achieved at low fractions of charged/adhesive groups in the brushes when the adsorption of particles is weak. The lowest fraction of charged/adhesive groups (one group per few polymer chains) can be exclusively achieved by random copolymerization and not by block copolymers. An explanation of the adsorption behavior of colloidal particles on switchable brushes is proposed.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | adsorption; polymer brushes; switching |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Professur Biofabrikation Fakultäten > Fakultät für Ingenieurwissenschaften > Professur Biofabrikation > Professur Biofabrikation - Univ.-Prof. Dr. Leonid Ionov Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 15 Apr 2019 06:49 |
| Letzte Änderung: | 04 Dec 2024 14:01 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/48683 |