Experimental determination of singly scattered light close to the critical point in a polystyrene–cyclohexane mixture

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Publication Date
DOI 10.1039/A902970B
Impact Factor 3.676
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Abstract

In turbid media the presence of multiple scattering constitutes a major complication for the analysis of the intensity and of the intensity correlation functions of the scattered light. The 3D-cross-correlation technique provides an effective means to determine the single scattering intensity and to suppress the influence of multiple scattering to the time dependence of correlation functions. The technique is applied to study the temperature dependence of the critical fluctuations of a solution of polystyrene (Mw=1.11×105 g mol-1) in cyclohexane. We show that the single scattering intensity determined for a scattering angle of ϑ=90° can be described by the Ornstein–Zernike function over the entire temperature range of 313.15–293.49 K. Good agreement between experiment and Monte Carlo simulations of the scattering processes is found for the ratio of singly scattered light to the total scattering intensity.

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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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