Polymer–surfactant interactions: Thermodynamics of some polypropylene glycols in sodium dodecylsulfate aqueous solutions at 298.15 K. Comparison with cationic CTAB aqueous solutions

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发布日期 2001-06-20
DOI 10.1039/B101931G
影响因子 3.676
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摘要

Interactions between poly(propylene) glycols and sodium dodecylsulfate, in aqueous solutions were investigated through thermodynamic analysis. Densities and heat capacities, measured with the corresponding well-known Picker apparatus, were determined as a function of the surfactant concentration at 298.15 K. The apparent and transfer molar volumes and heat capacities of the solutes, surfactant and polymer, were deduced therefrom. From the analysis of their variations as a function of the surfactant concentration, it was shown that mainly strong hydrophobic interactions are involved between solutes, similar to the medium chain (C4–C6) 1-alcohols in equivalent surfactant systems. However, the large variations of these properties observed close to the critical micellar concentration signify profound structural changes in micelles caused by the presence of the polymer. Comparison with hexadecyltrimethyl ammonium bromide solutions shows a similar pattern of aggregation and complex formation although the strength and nature of the interactions are somewhat different.

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Contents

Front/Back Matter

DOI: 10.1039/C0CP90125C

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来源期刊

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
自引率: 10.3%
年发文量: 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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