Results 81 to 90 of about 4,430 (207)
Acta Chimica Slovenica, 2020 This study aimed to prepare poly (3-hydroxybutyrate-co-3-hydroxyvalerate), biocomposites with incorporating various percentages of calcium carbonate using extrusion processing.
Semra Kirboga, Mualla Öner
doaj +1 more source
Chemistry–Methods, Volume 6, Issue 1, January 2026.We present a scalable, low‐emission approach to transform waste into sustainable building materials via carbon mineralization and 3D printing. Calcium from recycled concrete reacts with CO2 to form CaCO3, which is combined with lignin and sawdust to create printable inks. The resulting 3D‐printed structures offer mechanical robustness and a closed‐loop
Yong Ding +7 more
wiley +1 more source
Pigment‐Macromolecule Complexes Isolation from Sea Urchin Biomineral Waste for Coloring Materials
Chemistry–Methods, Volume 6, Issue 1, January 2026.A methodology has been developed to extract the colored organic fraction occluded within seashell biomineral waste. Applied to sea urchin skeletons, free polyhydroxylated naphthoquinone (PHNQ) pigments and PHNQ‐macromolecule complexes are isolated. These complexes show superior pH stability in purple hues compared to free PHNQ, which shifts from red to
Claudio Ferreira +12 more
wiley +1 more source
Freshwater pearls as near single crystals for vaterite structure resolution
, 2014 International audienceThere has been lots of controversies about vaterite structure in the past decades. Extra peaks occurring out of the hexagonal structure and best described by Kamhi [1] still resist any indexing.
Bourrat, Xavier +5 more
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Applied NanoThe synthesis of calcium carbonate (CaCO3) nanoparticles has gained an increasing interest due to their improved properties and diverse industrial applications.
Md Nuruzzaman +4 more
doaj +1 more source
, 2019 The morphology controlled synthesis of porous vaterite microparticles from amorphous calcium carbonate (ACC) nanoparticles via mesoscale transformation and self-assembly is presented.
Ocean Cheung (1753333) +4 more
core +3 more sources
Growth process and crystallographic properties of ammonia-induced vaterite
, 2010 Metastable vaterite crystals were produced by increasing the pH of Ca2+- and CO32--containing solutions through diffusing ammonia gas. The SEM and TEM studies indicate that this ammonia-induced vaterite is polycrystalline with a 6-fold symmetry of the ...
Qiaona Hu, Jiaming Zhang, Udo Becker
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Crystals, 2019 Calcium carbonate is a compound existing in living organisms and produced for many biomedical applications. In this work, calcium carbonate was synthesized by a CO2 bubbling method using ammonia as a CO2 absorption promotor.
Donata Konopacka-Łyskawa +4 more
doaj +1 more source
The Influence of Vibration on CaCO3 Scale Formation in Piping System
MATEC Web of Conferences, 2016 Carbonate scale is a common problem found in a piping system of industrial process. The presence of mechanical equipment such as turbine, compressor, blower, mixer and extruder produce a mechanical vibration on the piping system which is placed near ...
Mangestiyono W. +3 more
doaj +1 more source
Characterization of golden vaterite by the extended Maxwell Garnett formalism
, 2021 The homogenization of vaterite impregnated with gold nanoparticles was accomplished using the extended Maxwell Garnett formalism. The extended formalism takes into account the intrinsic anisotropy of vaterite as well as the size, shape, and orientation ...
Akhlesh Lakhtakia (1943569) +1 more
core +1 more source