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PMA‐b‐PAA‐controlled synthesis of one‐dimensional CaCO 3 superstructures
Author(s) -
You Chao,
Zhang Qiang,
Zhao Yun,
Jiao Qingze
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.201000478
Subject(s) - selected area diffraction , calcite , transmission electron microscopy , high resolution transmission electron microscopy , scanning electron microscope , crystallization , materials science , acrylic acid , copolymer , chemical engineering , maleic anhydride , electron diffraction , lamellar structure , aqueous solution , crystallography , chemistry , polymer chemistry , nanotechnology , mineralogy , diffraction , optics , organic chemistry , polymer , composite material , physics , engineering
Crystallization of calcium carbonate (CaCO 3 ) crystals by a gas‐liquid diffusion method has been carried out in aqueous solution using a double‐hydrophilic block copolymer (DHBC) poly(maleic anhydride)‐b‐poly(acrylic acid) (PMA‐b‐PAA). The as‐prepared products were characterized with X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), selected area electron diffraction (SAED), high‐resolution transmission electron microscopy (HRTEM) and infrared spectroscopic analysis (FT‐IR). Uniform one‐dimensional calcite micro/nanostructures with different morphologies are fabricated through an assembled process. The influence of PMA‐b‐PAA copolymer concentration on the morphology of calcite nano/microwires is investigated, which plays an important role in the morphological control of building blocks composed of one‐dimensional calcite crystals. The possible formation mechanism of one‐dimensional CaCO 3 crystals was discussed. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)