Shear induced structures in lamellar phases of amphiphilic block copolymers
文献情報
The influence of shear on the mesoscopic structure in the lamellar region of ternary poly(ethylene oxide)–b-poly(propylene oxide)–b-poly(ethylene oxide) block copolymers PEO20–b-PPO70–b-PEO20 and PEO100–b-PPO70–b-PEO100 (Pluronic P123 and F127)/water/butanol systems was investigated by different techniques namely: small angle neutron and light scattering (SANS, SALS), as well as birefringence. A transition from parallel to perpendicular alignment of lamellae, with a corresponding decrease in the viscosity, was found with increasing shear rate at high block copolymer concentrations. However, a shear-induced formation of multilamellar vesicles (“onions’') was observed when the polymer concentration was reduced.
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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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