Login
Literature by the same author
plus at Google Scholar
Bibliografische Daten exportieren		  

Multicompartment Microparticles with Patchy Topography through Solvent-Adsorption Annealing

Title data

Qiang, Xiaolian ; Dai, Xuezhi ; Steinhaus, Andrea ; Gröschel, André H.:
Multicompartment Microparticles with Patchy Topography through Solvent-Adsorption Annealing.
In: ACS Macro Letters. Vol. 8 (2019) Issue 12 . - pp. 1654-1659.
ISSN 2161-1653
DOI: https://doi.org/10.1021/acsmacrolett.9b00713

Abstract in another language

We report on the evaporation-induced confinement assembly (EICA) of polystyrene-b-polybutadiene-b-poly(methyl methacrylate) (PS-b-PB-b-PMMA, SBM) triblock terpolymers into multicompartment microparticles and follow their morphological evolution during solvent-adsorption annealing. We initially obtain elliptic microparticles with axially stacked PS/PB/PMMA morphology using cetyltrimethylammonium bromide (CTAB) as surfactant. Exchanging the surfactant to poly(vinyl alcohol) (PVA) during solvent vapor annealing with chloroform (CHCl3), PMMA preferentially interacts with the interface, and microparticles change their shape into spheres with concentric morphology. Surprisingly, this transformation initiates at both poles of the microparticles simultaneously and then proceeds toward the equator, resulting in particles with inner morphology and patchy topography. We observed this evolution for different PB fractions, suggesting the mechanism to be more general and the EICA process to be a suitable method to generate patchy particle surfaces.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Research Institutions > Central research institutes > Bayerisches Zentrum für Batterietechnik - BayBatt
Research Institutions
Research Institutions > Central research institutes
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Polymer Materials for Electrochemical Storage > Chair Polymer Materials for Electrochemical Storage - Univ.-Prof. Dr. André Gröschel
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 24 Jul 2023 13:28
Last Modified: 02 Aug 2023 07:53
URI: https://eref.uni-bayreuth.de/id/eprint/86309