Ionic surfactant–polymer interaction in aqueous solution
文献信息
Ornella Ortona, Gerardino D'Errico, Luigi Paduano, Roberto Sartorio
The interactions in aqueous solution between poly(vinylpyrrolidone) (PVP) and sodium nonanoate (C8COONa), sodium octylsulfonate (C8SNa), lithium perfluorononanoate (C8FCOOLi), respectively, were investigated. In all the studied systems, the presence of PVP induces a lowering of the aggregation number of the surfactant as evidenced by fluorescence quenching measurements. However, no direct surfactant–polymer interaction has been found for the systems C8COONa–PVP and C8SNa–PVP. Strong hydrophobic interaction in the system C8FCOOLi–PVP has been shown by the fluorescent behavior of pyrene used as a probe. The presence of the fluorinated surfactant induces an increment of ∼14% of the polymer gyration radius, as shown by viscosimetry. Calorimetry confirms the experimental results obtained through fluorescence and shows that the adsorption of C8FCOOLi on PVP is an endothermic process.
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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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