Authors Mihai, M. ; Mountrichas, G. ; Pispas, S. ; Stoica, I. ; Aflori, M. ; Auf der Landwehr, M. ; Neda, I. ; Schwarz, S.
Title Calcium carbonate microparticle templates using a PHOS-b-PMAA double hydrophilic copolymer
Date 08.10.2013
Number 37626
Abstract The crystallization characteristics of calcium carbonate microparticles grown from supersaturated aqueous solutions in the presence of a double hydrophilic block copolymer poly(p-hydroxystyrene-b-methacrylic acid), PHOS-b-PMAA, have been investigated. The studies aim to highlight both the possibilities and the limitations of CaCO3/PHOS-b-PMAA microparticle formation under different relative inorganic/polymer ratio conditions, varying the initial solution supersaturation or the polymer concentration. Scanning electron microscopy and atomic force microscopy were used to provide high-resolution images of particles and thereby information on the particle morphology, while X-ray diffraction analysis was used to determine the polymorph type and crystallite characteristics. The presence of the polymer in the composite particles was shown by thermogravimetric, particle charge density and zeta potential analysis. The polymer-induced sensitivity of the new composites to environmental pH variations has been followed by streaming potential variation.
Publisher Journal of Applied Crystallography
Citation Journal of Applied Crystallography 46 (2013) 1455-1466
Tags caco3-based microparticles double hydrophilic block copolymers biomimetic mineralization ph stability

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