Preparation and Characterization of $CaCO_3$ Encapsulation by PMMA Core-Shell latex

PMMA와 캡슐화된 $CaCO_3$ Core-Shell 라텍스 제조와 물성연구

  • Lim, Jong-Min (Department of Chemical Engineering, Dong-A University) ;
  • Seul, Soo-Duk (Department of Chemical Engineering, Dong-A University)
  • 임종민 (동아대학교 공과대학 화학공학과) ;
  • 설수덕 (동아대학교 공과대학 화학공학과)
  • Published : 2003.12.31


Inorganic/organic composite particles were also synthesized by changing an initiator an it's concentration, concentration of an adsorbed surfactant, reaction temperature, and agitation speed in the presence of $CaCO_3$ adsorbed SDBS. The polymerization conditions were optimized according to the conversion of the core-shell composite particles. In the inorganic/organic core-shell composite particle polymerization, $CaCO_3$ absorbed surfactant SDBS of 0.5 wt % was prepared first and then core $CaCO_3$ was encapsulated by sequential emulsion polymerization using MMA, concentration of APS $3.16{\times}10^{-3}mol/L$ to minimize the formation of new PMMA particle during MMA shell polymerization. The structure characterization of the inorganic/organic core-shell particles was verified by measuring the decomposition degree of $CaCO_3$ using HCl solution. It was found that $CaCO_3$ was encapsulated by shell PMMA due to having excellent dispersion in the epoxy resin, smooth surface distinctly from spindle shape, and broad particle distribution after the capsulation.


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