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Flow properties reveal the particle-to-polymer transition of ultra-low crosslinked microgels.
- A. Scotti, M. Brugnoni, Carlos G Lopez, S. Bochenek, J. Crassous, W. Richtering
- Materials Science, EngineeringSoft matter
- 9 December 2019
Both the flow curves and the increase of the storage modulus with concentration indicates that ULC microgels can form glass and even reach an apparent jammed state despite their extreme softness.
Exploring the colloid-to-polymer transition for ultra-low crosslinked microgels from three to two dimensions
The authors show that the properties of a microgel can change from colloidal-like in three dimensions to a flexible polymer under a confined environment.
Surface Functionalization by Stimuli-Sensitive Microgels for Effective Enzyme Uptake and Rational Design of Biosensor Setups
The presence of functional primary amino groups in the P(NIPAM-co-APMA) microgel enables a covalent enzyme-to-microgel coupling via glutar aldehyde cross-linking, thereby resulting in a considerable improvement of the biosensor operational stability.
Swelling of a Responsive Network within Different Constraints in Multi-Thermosensitive Microgels
We report on the swelling of a polymeric network in doubly thermoresponsive microgels. Silica-core double-shell and hollow double-shell microgels made of an inner poly(N-isopropylmethacrylamide) and…
Hollow microgels squeezed in overcrowded environments.
- A. Scotti, M. Brugnoni, A. Rudov, J. Houston, I. Potemkin, W. Richtering
- Materials ScienceThe Journal of chemical physics
- 3 May 2018
The decrease of the cavity size with increasing concentration shows that the hollow microgels have an alternative way with respect to regular cross-linked ones to respond to the squeezing due to their neighbors.
Synthesis and structure of deuterated ultra-low cross-linked poly(N-isopropylacrylamide) microgels
Partial deuteration of the N-isopropylacrylamide monomer reveals new insights into the self-cross-linking of polymer chains in ultra-low cross-linked microgels.
Deswelling of Microgels in Crowded Suspensions Depends on Cross-Link Density and Architecture
Microgels are nanometer-to-micrometer-sized cross-linked polymer networks that swell when dispersed in a good solvent. These soft colloids have emerged as versatile building blocks of smart materia...
The next step in precipitation polymerization of N-isopropylacrylamide: particle number density control by monochain globule surface charge modulation
Many applications of poly(N-isopropylacrylamide) microgels necessitate robust control over particle size. Here we derive a scaling law for the particle size in precipitation polymerization of…
Facile Screening of Various Micellar Morphologies by Blending Miktoarm Stars and Diblock Copolymers.
A time-saving phase-diagram screening is introduced for the self-assembly of miktoarm star polymers with different arm numbers for the insoluble part. Agreeing with theory, all conventional micellar…
Self-Templated Generation of Triggerable and Restorable Nonequilibrium Micelles.
A thermoresponsive polyelectrolyte system allowing a pathway-dependent preparation of kinetically stable spherical star-like or cylindrical micelles is presented, highlighting a system with an on-demand changeable and restorable structure.