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Impurities in pluronic triblock copolymers can induce the formation of calcite mesocrystals

Title data

Schenk, Anna S. ; Kim, Yi-Yeoun ; Kulak, Alexander N. ; Meldrum, Fiona C.:
Impurities in pluronic triblock copolymers can induce the formation of calcite mesocrystals.
In: Chemical Geology. Vol. 294-295 (2012) . - pp. 259-262.
ISSN 0009-2541
DOI: https://doi.org/10.1016/j.chemgeo.2011.12.007

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Calcite; Mesocrystal; Calcium carbonate; Block copolymer
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Juniorprofessur Kolloidale Systeme > Juniorprofessur Kolloidale Systeme - Juniorprof. Dr. Anna Schenk
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Juniorprofessur Kolloidale Systeme
Result of work at the UBT: No
DDC Subjects: 500 Science
500 Science > 540 Chemistry
Date Deposited: 21 Feb 2017 09:49
Last Modified: 21 Feb 2017 12:42
URI: https://eref.uni-bayreuth.de/id/eprint/36160