• Title/Summary/Keyword: glass transiton temperature

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Manufacture of Alkyl Acrylate Multi Core-shell Composite Particle (알킬 아크릴레이트계의 다중 Core-shell 복합입자의 제조)

  • Cho, Dae-Hoon;Choi, Sung-Il;Go, Hyun-Mi;Seul, Soo-Duk
    • Journal of Adhesion and Interface
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    • v.12 no.1
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    • pp.16-25
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    • 2011
  • Multi core-shell composite particles were prepared by the water-born emulsion polymerization of various core monomer such as methyl methacrylate (MMA), n-butyl methacrylate (BMA), and shell monomer such as MMA, BMA, stylene (St), 2-hydroxyl ethyl methacrylate (2-HEMA) and acrylic acid (AA) in the presence of different concentration of sodium dodecyl benzene sulfonate (SDBS). The following conclusions are drawn from the measured conversion, particle size and distribution, average molecular weight, molecular structure, glass transition temperature with DSC, morphology, tensile strength and elongation. In the case of the concentration of 0.02 wt% SDBS, the conversion of MMA core-(BMA/St/AA) shell composite particle was excellent as 98%. In the case of the concentration of 0.03 wt% SDBS, the particle size of BMA core-(MMA/St/AA) shell composite particle was high as $0.47{\mu}m$. We confirmed that 3 points of glass transition temperatures appear for multi core-shell composite particles compared to 2 points of glass transition temperatures appear for general core-shell composite particles. We showed that it is possible to adjust glass transition temperatures according to the kind and composition of the inner shell monomer that it is can be used as a adhesive binder material with improved adhesive power.