Biomaterials, Biodegradables and Biomimetics Research Group

Papers in Scientific Journals

Investigation of calcium carbonate precipitated in the presence of alkanols

Abstract

The influence of myristyl alcohol (CH3(CH2)13OH), cetyl alcohol (CH3(CH2)15OH) and behenyl alcohol (CH3(CH2)21OH) on the structure, morphology, size and surface properties of calcium carbonate (CaCO3) has been investigated. Changes in the nature of the washing solvent, in the CnOH/Ca2+ and CO32−/Ca2+ molar ratios and in temperature have been also evaluated. The sole polymorph produced was rhombohedral calcite. At room temperature, while microspheres composed of submicrocubes were produced at a high molar ratio CO32−/Ca2+ and low CH3(CH2)15OH concentration, a stoichiometric molar ratio CO32−/Ca2+ and high CH3(CH2)15OH concentration induced the formation of microcubes and microboxes. In the presence of this alkanol (12 % molar) a significant enhancement of the water contact angle (ca. 40 °) resulted in a sample obtained with a stoichiometric CO32−/Ca2+ ratio. These results emphasize the key role played by the three non-ionic surfactants in the formation of materials with variable crystal shape and wettability and thus technological interest for a range of applications.
Journal
Crystal Research and Technology
Volume
49
Issue
6
Pagination
418–430
Keywords
Calcium Carbonate, Morphology, Non-Ionic Surfactants, Size, wettability
Rights
Restricted Access
Peer Reviewed
Yes
Status
published
Year of Publication
2014
DOI
10.1002/crat.201400059
Date Published
2014-06-06
Search Google ScholarGenerate BibTexDownload RTF
This website uses cookies. By using this website you consent to our use of these cookies. For more information visit our Policy Page.