| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Aseyev, Vladimir O.
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Clay Composites by In Situ Polymerization of Ionic Liquid-Based Dispersions
- 2023Amphoteric nano- and microgels with acrylamide backbone for potential application in oil recoverycitations
- 2023Clay Composites by In Situ Polymerization of Ionic Liquid-Based Dispersions
- 2022Well-dispersed clay in photopolymerized poly(ionic liquid) matrixcitations
- 2022Ophthalmic drug delivery system based on the complex of gellan and ofloxacincitations
- 2021Synthesis and characterization of novel thermo- and salt-sensitive amphoteric terpolymers based on acrylamide derivativescitations
- 2020Think Beyond the Corecitations
- 2016AuNP-Polymeric Ionic Liquid Composite Multicatalytic Nanoreactors for One-Pot Cascade Reactionscitations
- 2016Water-Dispersible Silica-Polyelectrolyte Nanocomposites Prepared via Acid-Triggered Polycondensation of Silicic Acid and Directed by Polycationscitations
- 2011Polyelectrolyte Brushes Grafted from Cellulose Nanocrystals Using Cu-Mediated Surface-Initiated Controlled Radical Polymerization.citations
- 2009Sorption of silicic acid from non-saturated aqueous solution by a complex of zinc ions with poly(vinylamine)citations
- 2004Complexation of DNA with Poly(methacryl oxyethyl trimethylammonium chloride) and Its Poly(oxyethylene) Grafted Analogue.citations
Places of action
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article
Polyelectrolyte Brushes Grafted from Cellulose Nanocrystals Using Cu-Mediated Surface-Initiated Controlled Radical Polymerization.
Abstract
Herein we report the synthesis of cellulose nanocrystals (CNCs) grafted with poly(acrylic acid) (PAA) chains of different lengths using Cu-mediated surface initiated-controlled radical polymn. (SI-CRP).First, poly(tert-butylacrylate) (PtBA) brushes were synthesized; then, subsequent acid hydrolysis was used to furnish PAA brushes tethered onto the CNC surfaces.The CNCs were chem. modified to create initiator moieties on the CNC surfaces using chem. vapor deposition (CVD) and continued in solvent phase in DMF.A d. of initiator groups of 4.6 bromine ester groups/nm2 on the CNC surface was reached, suggesting a dense functionalization and a promising starting point for the controlled/living radical polymn.The SI-CRP of tert-butylacrylate proceeded in a well-controlled manner with the aid of added sacrificial initiator, yielding polymer brushes with polydispersity values typically well below 1.12.We calcd. the polymer brush grafting d. to almost 0.3 chains/nm2, corresponding to high grafting densities and dense polymer brush formation on the nanocrystals.Successful rapid acid hydrolysis to remove the tert-Bu groups yielded pH-responsive PAA-polyelectrolyte brushes bound to the CNC surface.Individually dispersed rod-like nanoparticles with brushes of PtBA or PAA were clearly visualized by AFM and TEM imaging. [on SciFinder(R)]