Film formation and surface gelation of gelatin molecules at the water/air interface.
Film formation and surface gelation of gelatin molecules at the water/air interface.
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明胶分子在水/空气界面处的成膜和表面凝胶化。
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
H. Rehage
中科院分区：
文献类型：
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作者：
S. Leick;P. Degen;Berthold Köhler;H. Rehage
该出版物提出了在水/空气表面形成猪明胶分子的超薄膜的新结果。在一系列的实验中，我们使用了悬滴和振动电容器的方法来测量动态表面张力和静电表面电位。用扭摆和振荡悬滴技术研究了明胶分子吸附层的表面剪切和表面拉伸流变特性。这些实验的结果表明，即使在高度稀释的浓度制度的多肽分子在纯水表面的显着吸附过程。这些薄明胶膜表现出惊人的粘弹性，这对应于二维凝胶状态。
This publication presents new results on the formation of ultra-thin films of porcine gelatin molecules at the water/air surface. In a series of experiments we used the pendant-drop and vibrating-capacitor method for measuring dynamic surface tensions and electrostatic surface potentials. The surface shear and surface elongational rheological properties of the adsorbed layers of gelatin molecules were investigated by the torsion pendulum and the oscillating pendant-drop technique. The results of these experiments showed striking adsorption processes of the polypeptide molecules at the pure water surface even in the highly dilute concentration regime. These thin gelatin films exhibit striking viscoelastic properties, which correspond to two-dimensional gel states.