Crystallization study and morphology behaviour of calcium carbonate crystals in aqueous Surfactant-Pluronics® prototype | Zendy

Bharatkumar Kanoje | Zendy; Jigisha Parikh | Zendy; Ketan Kuperkar | Zendy

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Crystallization study and morphology behaviour of calcium carbonate crystals in aqueous Surfactant-Pluronics® prototype

Author(s) -

Bharatkumar Kanoje,

Jigisha Parikh,

Ketan Kuperkar

Publication year - 2018

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2017.10.005

Subject(s) - vaterite , materials science , calcite , chemical engineering , calcium carbonate , crystallization , dynamic light scattering , copolymer , cationic polymerization , polymer , pulmonary surfactant , dispersity , poloxamer , polymer chemistry , nanotechnology , composite material , mineralogy , nanoparticle , chemistry , engineering , aragonite

A facile procedure to fabricate the hydrophobic surfaces of calcium carbonate-polymer composites has been well described. Nano-sized highly ordered CaCO3 clusters i.e. calcite/vaterite have been synthesized by simple precipitation in the presence of template made of cationic surfactant: cetyl trimethyl ammonium bromide (CTAB) and different non-ionic amphiphilic triblock copolymers comprising of PEO–PPO–PEO units: F98 and F127 commercially known as Pluronics® or Synperonics® or Poloxamers. The morphology of these nano-composites so formed was characterized in detail using spectroscopy, microscopy, diffraction, and scattering techniques. It was found that the surfactant-polymer prototype turned out to be an important parameter to tune and understand the shape-controlled morphology and crystallization in precipitated calcium carbonate (PCC). Our diffraction pattern depicted the presence of calcite/vaterite, while the microscopic investigations indicated the bunch/clusters of calcite (nano-flakes) arranged in stacks which could be attributed to the attractive hydrophobic interaction between the alkyl group of cationic surfactant and -PPO unit of the block copolymer. Similar assumptions were inferred by structural optimization using Gauss View 5.0.9. The scattering measurements described the polydispersity of nano-aggregates based on the scattering intensity. Results expounded the growth mechanism of CaCO3 crystals to be a step-by-step build process with respect to the polarity.

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