Effect of pH Change on the Shell Thickness of Calcium Carbonate Hollow Particles by CO<sub>2</sub> Gas Bubbling Method

Bibliographic Information

Other Title
  • 炭酸ガスバブリング法で合成される炭酸カルシウム中空粒子のシェル厚に与える pH 変化の影響

Abstract

Effect of pH change on the shell thickness of calcium carbonate hollow particles was investigated. Calcium carbonate hollow particles were synthesized at different pH change rates by Carbon dioxide bubbling into a solution. And influence of pH change rate on the shell thickness was estimated by observing SEM images of cross section of hollow particles. pH change curve could be divided into two stages, before and after the point where pH changes rapidly, and could express each stage with the approximated curve. Rate parameters of pH change rate were determined from these approximated curves, and the relation with shell thickness was investigated. As a result, it has become clear that thickness of hollow particles is expressible by the rate parameter of approximation curve corresponding to the first stage which is characterized as the process from start of bubbling to the point where shell is formed.

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Details 詳細情報について

  • CRID
    1390001204511847552
  • NII Article ID
    130004545838
  • DOI
    10.4164/sptj.49.260
  • ISSN
    18837239
    03866157
  • Text Lang
    en
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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