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Controllable mineralization of calcium carbonate on regenerated cellulose fibers
Author(s) -
Xiao Wenjun,
Liu Jie,
Chen Qin,
Wu Ying,
Dai Lizong,
Wu Tinghua
Publication year - 2011
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201100261
Subject(s) - vaterite , calcite , calcium carbonate , chemical engineering , chemistry , mineralization (soil science) , nucleation , polymer , miscibility , calcium , adsorption , ethanol , porosity , mineralogy , organic chemistry , aragonite , nitrogen , engineering
Gel–forming fibers (GF fibers) can serve as nucleation sites to prepare calcium carbonate (CaCO 3 ) because they can adsorb large amounts of Ca 2+ due to their porous structure. In this paper, mineralization behavior of CaCO 3 on GF fibers in ethanol–water mixed solvents without any additives has been investigated. The results showed that some crystals covered the fibers, while others were embedded in fibers. Twin–sphere based vaterite, zonary and rodlike calcite with large aspect ratio could be prepared successfully. The effect of ethanol content inside GF fibers, concentration of Ca 2+ and CO 3 2‐ , mineralization time, miscibility between alcohol and water, and temperature were studied. Lastly, a possible mineralization mode was suggested. This work could provide a new method to prepare inorganic/polymer hybrid materials. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)