<b>Characterization of Finite Deformation Behavior of Polymer Gels by </b><b>Means of Biaxial Stretching </b>

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  • Urayama Kenji
    Department of Macromolecular Science and Engineering, Kyoto Institute of Technology

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Other Title
  • <b>二軸変形測定によるゲルの大変形挙動の解析 </b>
  • 二軸変形測定によるゲルの大変形挙動の解析
  • ニジク ヘンケイ ソクテイ ニ ヨル ゲル ノ ダイヘンケイ キョドウ ノ カイセキ

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Uniaxial elongation or compression has often been used to characterize the finite deformation behavior of polymer gels. We demonstrate that biaxial stretching experiments under varying the strains independently in the two directions provide stress-strain data in a wide range of strain revealing the essential features of nonlinear elasticity of polymer gels. We introduce the analysis of the biaxial stretching data for the three types of gel: Highly swollen hydrogels with a water content of 98%, Tetra-PEG gels with nearly uniform network structure, and slide-ring gels whose cross-links are movable along network strands.

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