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- W4313585220 abstract "We study the role of temperature on the structure of pure polymer brushes and their mixture with attractive nanoparticles in flat and cylindrical geometries. It has previously been established that the addition of such nanoparticles causes the polymer brush to collapse and the intensity of the collapse depends on the attraction strength, the nanoparticle diameter, and the grafting density. In this work, we carry out molecular dynamics simulation under good solvent conditions to show how the collapse transition is affected by the temperature, for both plane grafted and inside-cylinder grafted brushes. We first examine the pure brush morphology and verify that the brush height is insensitive to temperature changes in both planar and cylindrical geometries, as expected for a polymer brush in a good solvent. On the other hand, for both system geometries, the brush structure in the presence of attractive nanoparticles is quite responsive to temperature changes. Generally speaking, for a given nanoparticle concentration, increasing the temperature causes the brush height to increase. A brush which contracts when nanoparticles are added eventually swells beyond its pure brush height as the system temperature is increased. The combination of two easily controlled external parameters, namely, concentration of nanoparticles in solution and temperature, allows for sensitive and reversible adjustment of the polymer brush height, a feature which could be exploited in designing smart polymer devices." @default.
- W4313585220 created "2023-01-06" @default.
- W4313585220 creator A5011083907 @default.
- W4313585220 creator A5037436986 @default.
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- W4313585220 date "2023-01-03" @default.
- W4313585220 modified "2023-10-18" @default.
- W4313585220 title "Morphology of Polymer Brushes in the Presence of Attractive Nanoparticles: Effects of Temperature" @default.
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- W4313585220 doi "https://doi.org/10.3390/ijms24010832" @default.
- W4313585220 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36614298" @default.
- W4313585220 hasPublicationYear "2023" @default.
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