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논문 기본 정보

자료유형
학술저널
저자정보
Zhang, Huaiping (College of Materials Science and Engineering, Taiyuan University of Technology) Li, Wei (College of Materials Science and Engineering, Taiyuan University of Technology) Cao, Qing (College of Materials Science and Engineering, Taiyuan University of Technology) Chen, Mingcai (Guangzhou Institute of Chemistry, Chinese Academy of Sciences)
저널정보
한국유변학회 Korea-Australia rheology journal Korea-Australia rheology journal 제26권 제2호
발행연도
2014.1
수록면
141 - 148 (8page)

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Hydrophobically modified (HM) polyelectrolytes were prepared by using precipitation polymerization of acrylic acid (AA) and octadecyl acrylate (ODA) in various molar ratios in supercritical carbon dioxide. The product was obtained in the form of a white powder and the micrographs show aggregates of primary particles < $1{\mu}m$ in size. The effects of polymer concentration, ODA content in polymer, surfactant, shear time, shear rate on the apparent viscosity were investigated. The reason leaded to a significant viscosity enhancement was discussed. Steady-state and oscillatory tests of solution were also investigated. Solution exhibited shear thinning behavior and thixotropy. Polymers contain octadecyl acrylate (3.4 mol%) at 0.2 g/dL behaved as high entanglement structures or association gels, since the modulus $G^{\prime}$ were being higher than $G^{{\prime}{\prime}}$ throughout the frequency range. The comparison of apparent and complex viscosities confirmed the association gel properties.

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