The effect of PVP-b-PMAA block copolymer on morphologies control of calcium carbonate |
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| Authors: | Puyu Zhang Xueli Zhong Yun Chai Yang Liu |
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| Affiliation: | (1) Institute of Fine Chemistry and Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475001, People’s Republic of China |
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| Abstract: | A novel double-hydrophilic block copolymer (DHBC) poly(vinyl pyrrolidone)–block–poly(methacrylic acid) (PVP-b-PMAA) was synthesized via reversible addition–fragmentation chain transfer polymerization. The structure of the resulting copolymer was characterized by 1H nuclear magnetic resonance, and the molecular weight of the block copolymer was determined by gel permeation chromatography. The study of morphological control of calcium carbonate (CaCO3) has been performed in the presence of the PVP-b-PMAA block copolymer. Various morphologies of CaCO3 particles such as rhombohedral, multilayered, and aggregated with cavities can be produced by varying the copolymer concentrations. The all-obtained CaCO3 particles were calcite, which was confirmed by either X-ray diffraction or Fourier transform infrared spectra. Such calcium carbonate/polymer hybrids with complex morphologies may find valuable applications in biomimic mineralization. |
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| Keywords: | Reversible addition– fragmentation chain transfer (RAFT) Double-hydrophilic block copolymers Calcium carbonate Morphogenesis |
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