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Title: Synthesis of carbonate-based micro/nanoscale particles with controlled morphology and mineralogy
Authors: University of Puerto Rico (Mayagüez Campus). Department of Mechanical Engineering.
Center Directed Research Program (U.S.)
Torres-Cancel, Kevin.
Moser, Robert D.
Weiss, Charles Arthur, 1961-
Allison, Paul G.
Chandler, Mei Qiang, 1968-
Malone, P. G.
Rodriguez, Omar R.
Keywords: Aragonite
Calcium carbonate
Design and Synthesis of Bio-Inspired Nanocomposites
Publisher: Geotechnical and Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/GSL TR ; 13-16.
Description: Technical Report
Abstract: Biological structural materials such as bone, nacre and fish scales utilize unique material structures and chemistry, especially nanoscale structures to provide high strength as well as high ductility. To incorporate these design principles into the material design, novel synthesis methods need to be developed to fabricate composites with controlled morphology, orientation, organization and chemistry at nanoscale. In this study, the mineralogy and morphology of carbonate-based micro/nanoscale particles precipitated by reacting (NH4)2CO3 with mixed Ca, Sr, Mg, and Mn-acetates was investigated. As the proportion of the non-Ca component increased, the products shifted toward double carbonates and mixtures of double carbonates with single carbonates. Characterization by Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) to determine crystal sizes, morphology, and structure of precipitated phases indicated a potential for re-crystallizing the products to form new composite materials. Ongoing research efforts are focused on using information obtained in the present study to develop composites by hydrothermal recrystallization of metastable phases.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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