| Hauptseite > Publikationsdatenbank > Exploring the colloid-to-polymer transition for ultra-low crosslinked microgels from three to two dimensions > print |
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| 100 | 1 | _ | |a Scotti, A. |0 0000-0002-8988-330X |b 0 |e Corresponding author |
| 245 | _ | _ | |a Exploring the colloid-to-polymer transition for ultra-low crosslinked microgels from three to two dimensions |
| 260 | _ | _ | |a [London] |c 2019 |b Nature Publishing Group UK |
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| 520 | _ | _ | |a Microgels are solvent-swollen nano- and microparticles that show prevalent colloidal-like behavior despite their polymeric nature. Here we study ultra-low crosslinked poly(N-isopropylacrylamide) microgels (ULC), which can behave like colloids or flexible polymers depending on dimensionality, compression or other external stimuli. Small-angle neutron scattering shows that the structure of the ULC microgels in bulk aqueous solution is characterized by a density profile that decays smoothly from the center to a fuzzy surface. Their phase behavior and rheological properties are those of soft colloids. However, when these microgels are confined at an oil-water interface, their behavior resembles that of flexible macromolecules. Once monolayers of ultra-low crosslinked microgels are compressed, deposited on solid substrate and studied with atomic-force microscopy, a concentration-dependent topography is observed. Depending on the compression, these microgels can behave as flexible polymers, covering the substrate with a uniform film, or as colloidal microgels leading to a monolayer of particles. |
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| 773 | _ | _ | |a 10.1038/s41467-019-09227-5 |g Vol. 10, no. 1, p. 1418 |0 PERI:(DE-600)2553671-0 |n 1 |p 1418 |t Nature Communications |v 10 |y 2019 |x 2041-1723 |
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