Film formation and surface gelation of gelatin molecules at the water/air interface

Literature Information

Publication Date 2009-02-11
DOI 10.1039/B819708C
Impact Factor 3.676
Authors

Sabine Leick, Patrick Degen, Berthold Köhler, Heinz Rehage


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Abstract

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.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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