Polymorphism, Size and Shape Control of Calcium Carbonate Crystals in the Presence of a Polyelectrolyte

Yuko Sonobe, Hiroto Watamura, Izumi Hirasawa

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    6 Citations (Scopus)

    Abstract

    The effects of the presence of a polyelectrolyte on the polymorphism and particle size and shape of calcium carbonate crystals during reactive crystallization were investigated. Crystals were created by the single-jet reaction crystallization method. When polyacrylic acid (PAA) was added, the polymorphism and particle size and shape were different for each molecular weight of PAA and each experimental method. When sodium carboxymethylcellulose was added, the polymorph became different from those made by adding PAA and the particle sizes and shapes were different for each concentration. As a result, it is suggested that the method to achieve supersaturation, such as type of feeding, feed rate, kinds of polyelectrolyte and their concentration, may affect the polymorphism and particle size and shape of calcium carbonate.

    Original languageEnglish
    Pages (from-to)1053-1058
    Number of pages6
    JournalChemical Engineering and Technology
    Volume38
    Issue number6
    DOIs
    Publication statusPublished - 2015 Jun 1

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    Keywords

    • Chemical engineering
    • Crystallization
    • Polymorphism

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)
    • Industrial and Manufacturing Engineering

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