Titelangaben
Schenk, Anna ; Kim, Yi-Yeoun ; Kulak, Alexander N. ; Meldrum, Fiona C.:
Impurities in pluronic triblock copolymers can induce the formation of calcite mesocrystals.
In: Chemical Geology.
Bd. 294-295
(2012)
.
- S. 259-262.
ISSN 0009-2541
DOI: https://doi.org/10.1016/j.chemgeo.2011.12.007
Abstract
An interesting recent report by Zhou et al. (Chemical Geology, 2010, 279, 63-74) describes the formation of calcite mesocrystals with very well-defined, prismatic morphologies in the presence of F-68, a pluronic triblock copolymer. That this can be achieved with a polymer which is a linear, nonionic polyoxyethyleneâ polyoxypropylene runs counter to the current understanding that face-selective adsorption of a polymer on the precursor mineral building blocks is required for mesocrystal formation. In this paper we contrast the effect of analytical grade F-68 and the same polymer after purification by dialysis, and show that a strong morphological effect on calcite precipitation is only achieved with the analytical grade polymer. We therefore suggest that low molecular weight impurities present within analytical grade F-68 may have been responsible for the formation of CaCO3 mesocrystals rather than the F-68 macromolecules themselves.
Weitere Angaben
Publikationsform: | Artikel in einer Zeitschrift |
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Begutachteter Beitrag: | Ja |
Keywords: | Calcite; Mesocrystal; Calcium carbonate; Block copolymer |
Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Kolloidale Systeme > Juniorprofessur Kolloidale Systeme - Juniorprof. Dr. Anna Schenk Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Kolloidale Systeme |
Titel an der UBT entstanden: | Nein |
Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik 500 Naturwissenschaften und Mathematik > 540 Chemie |
Eingestellt am: | 21 Feb 2017 09:49 |
Letzte Änderung: | 16 Mai 2022 12:38 |
URI: | https://eref.uni-bayreuth.de/id/eprint/36160 |