2016
DOI: 10.1140/epje/i2016-16098-1
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Competition between phase transition and thermophoretic expansion of a transient poly(N-isopropylacrylamide) network

Abstract: Aqueous solutions of highly entangled ultra-high molar mass ( 2.4×10 g/mol) poly(N-isopropylacrylamide) (PNIPAM) have been subjected to an inhomogeneous temperature field by selective heating of a single embedded gold nanoparticle (GNP) by means of a focused laser beam. Randomly distributed tracer GNPs are trapped in the meshes of the transient entanglement network and serve as tracers for the monitoring of the network deformation field. Because of the positive Soret coefficient of PNIPAM in water, the viscoel… Show more

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“…As expected, many papers in this topical issue deal with diffusion and thermal diffusion in various complex systems. In particular, thermal forces in polystyrene beads are investigated by Syshchyk et al [7], while Orlishausen and Köhler [8] cover metallic particles in polymer networks and Eguchi et al [9] oligosaccharides in polar solvents.…”
Section: Diffusion and Thermodiffusion In Complex Systemsmentioning
confidence: 99%
“…As expected, many papers in this topical issue deal with diffusion and thermal diffusion in various complex systems. In particular, thermal forces in polystyrene beads are investigated by Syshchyk et al [7], while Orlishausen and Köhler [8] cover metallic particles in polymer networks and Eguchi et al [9] oligosaccharides in polar solvents.…”
Section: Diffusion and Thermodiffusion In Complex Systemsmentioning
confidence: 99%