Characterization of the interfacial properties of modified polypropylene
Literature Information
The interfacial properties of a rubber blended polypropylene were investigated by the combination of complementary techniques in order to characterize the effects of different surface treatments. The wettability was investigated by contact angle measurements with water, streaming potential measurements indicated the Brønsted acidity/basicity of the surfaces, and X-ray photoelectron spectroscopy (XPS) identified the chemical elements, which were incorporated by the various treatments. The topography and the roughness of the samples were quantitatively analyzed by scanning force microscopy (SFM). Direct force measurements showed the possibility of changing the sign of the surface charge by choosing suitable buffer solutions, leading to attraction and repulsion to the Si3N4 tip, respectively. In the case of technical-type polymer samples used in this study, direct force measurements are in exact agreement with the streaming potential measurements and offer a valuable tool for interface characterization.
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Physical Chemistry Chemical Physics

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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