Precise Control over the Rheological Behavior of Associating Stimuli-Responsive Block Copolymer Gels
| Autor: | Flanco Zhuge, Jérémy Brassinne, Charles-André Fustin, Jean-François Gohy |
|---|---|
| Přispěvatelé: | UCL - SST/IMCN/BSMA - Bio and soft matter |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
micellar gel
Yield (engineering) Materials science Polymers and Plastics Supramolecular chemistry Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Viscoelasticity Article stimuli-responsive lcsh:Chemistry Biomaterials lcsh:General. Including alchemy Rheology Polymer chemistry lcsh:Inorganic chemistry Copolymer lcsh:Science Organic Chemistry terpyridine 021001 nanoscience & nanotechnology lcsh:QD146-197 0104 chemical sciences lcsh:QD1-999 Chemical engineering associating polymer Self-healing hydrogels lcsh:Q rheology 0210 nano-technology Shear flow lcsh:QD1-65 Macromolecule supramolecular |
| Zdroj: | Gels Gels, Vol. 1, no.2, p. 235-255 (2015) Gels, Vol 1, Iss 2, Pp 235-255 (2015) Volume 1 Issue 2 Pages 235-255 |
| ISSN: | 2310-2861 |
| Popis: | “Smart” materials have considerably evolved over the last few years for specific applications. They rely on intelligent macromolecules or (supra-)molecular motifs to adapt their structure and properties in response to external triggers. Here, a supramolecular stimuli-responsive polymer gel is constructed from heterotelechelic double hydrophilic block copolymers that incorporate thermo-responsive sequences. These macromolecular building units are synthesized via a three-step controlled radical copolymerization and then hierarchically assembled to yield coordination micellar hydrogels. The dynamic mechanical properties of this particular class of materials are studied in shear flow and finely tuned via temperature changes. Notably, rheological experiments show that structurally reinforcing the micellar network nodes leads to precise tuning of the viscoelastic response and yield behavior of the material. Hence, they constitute promising candidates for specific applications, such as mechano-sensors. |
| Databáze: | OpenAIRE |
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