Kinetic study on polyethylenimine-assisted reactive crystallization of monodisperse strontium sulfate microcrystals

T. Mikami, Izumi Hirasawa

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Double-jet reactive crystallization of SrSO4 was carried out in the presence of polyethylenimine (PEI). A simple kinetic model of primary nucleation as well as crystal growth was investigated under the condition of producing monodisperse microcrystals. Furthermore, surface free energy in the solution of PEI was estimated. PEI addition causes growth inhibition leading to smaller sizes and modifies the Gibbs free energy gap required for occurring nucleation. The effect of polyethylenimine (PEI) addition on nucleation and growth of SrSO4 is determined and a simple kinetic model is proposed. Time-dependent behaviors of crystal size and crystal number are statistically analyzed by a nonlinear least-square program. Kinetic aspects under the condition of obtaining monodisperse crystals are discussed.

    Original languageEnglish
    Pages (from-to)1320-1326
    Number of pages7
    JournalChemical Engineering and Technology
    Volume36
    Issue number8
    DOIs
    Publication statusPublished - 2013 Aug

    Fingerprint

    Polyethyleneimine
    Microcrystals
    Strontium
    Crystallization
    Sulfates
    Nucleation
    Crystals
    Kinetics
    Gibbs free energy
    Crystal growth
    Free energy
    Energy gap

    Keywords

    • Double-jet precipitation
    • Kinetic model
    • Monodisperse crystals
    • Nano/microcrystals
    • Polyelectrolyte additive

    ASJC Scopus subject areas

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

    Cite this

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    abstract = "Double-jet reactive crystallization of SrSO4 was carried out in the presence of polyethylenimine (PEI). A simple kinetic model of primary nucleation as well as crystal growth was investigated under the condition of producing monodisperse microcrystals. Furthermore, surface free energy in the solution of PEI was estimated. PEI addition causes growth inhibition leading to smaller sizes and modifies the Gibbs free energy gap required for occurring nucleation. The effect of polyethylenimine (PEI) addition on nucleation and growth of SrSO4 is determined and a simple kinetic model is proposed. Time-dependent behaviors of crystal size and crystal number are statistically analyzed by a nonlinear least-square program. Kinetic aspects under the condition of obtaining monodisperse crystals are discussed.",
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    AU - Hirasawa, Izumi

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