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Nanocomposites based on synthetic polymers grafted from kraft lignin with average particle size of 5 nm were synthesized using atom transfer radical polymerization (ATRP). Lignin macroinitiators were prepared, and polystyrene and poly(methyl methacrylate) were polymerized with target degree of polymerization of 450 resulting in materials having lignin mass fractions of 4.5%, 8.3%, and 22.1% for the...
This contribution describes a graft polymerization strategy to prepare multimodal membranes, a new class of high-productivity adsorptive materials for the purification of therapeutic proteins. Surface-initiated atom transfer radical polymerization was used to graft poly(glycidyl methacrylate) ‘tentacles’ from the pore surfaces of macroporous regenerated cellulose membranes. Subsequently, 4-mercaptobenzoic...
Polymerization of vinyl acetate (VAc) was carried out with four different cyclometalated ruthenium(II) catalysts, using CCl 4 as initiator under conventional heating and microwave irradiation. The thermo-polymerizations were solvent-dependent and proceeded to limited conversions without control. Only the polymerization in DMSO mediated by [Ru(η 6 -C 6 H 6 )(C 6...
Results of the simulation of star polymers synthesis by one–pot, core–first method are presented. The simulated ideal living polymerization process consists of two steps. In the first one (core growth) an atom transfer radical polymerization (ATRP) of a crosslinker is performed. When the crosslinker conversion is close to completion, a bifunctional monomer is added and the ATRP polymerization of the...
Covalent attachment of poly(ionic liquid)s (PILs) by click chemistry on glass or silicon (Si) surfaces was performed. Poly[1-(4-vinylbenzyl)-3-butylimidazolium bis(trifluoromethylsulfonyl)imide] (polyVBBI+Tf2N−), and copolymers of polyVBBI+Tf2N− with fluorescein O-methacrylate were synthesized by conducting an atom transfer radical polymerization (ATRP) from initiators containing azide or thioacetate...
A series of imidazolium-based noncharged-charged diblock copolymers (1) was synthesized by the direct, sequential ATRP of styrene and styrenic imidazolium bis(trifluoromethyl)sulfonamide monomers with methyl, n-butyl, and n-decyl side-chains. Small-angle X-ray scattering studies on initial examples of 1 with a total of 50 repeat units and styrene:imidazolium-styrene repeat unit ratios of 25:25, 20:30,...
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