- Synthesis of a poly(p-styrenesulfonate) brush via surface-initiated polymerization
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The synthesis of molecularly thin poly(p-styrenesulfonate) monolayers as an example for a negatively charged polyelectrolyte brush covalently attached to a planar solid surface is described. The polymer monolayers are generated directly at the surface of the substrate by using self-assembled monolayers of an azo initiator and radical chain polymerization of p-styrenesulfonate ethyl ester (ESS) monomer in situ. This grafting from approach yields surface-bound poly(p-styrenesulfonate ethyl ester) (PESS) molecules with high molecular weights and with high graft densities of the attached chains. The PESS monolayers can be transformed into a charged poly(p-styrenesulfonate) (PSS) monolayer through a polymer-analogous saponification reaction under mild conditions, and the reaction can be carried out to quantitative conversion. The thickness of the polyelectrolyte brush can be controlled from 2 to more than 35 nm in the dry, collapsed state.
- Biesalski, Markus,Ruehe, Juergen
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- Synthesis of poly(vinylidene fluoride)-b-poly(styrene sulfonate) block copolymers by controlled radical polymerizations
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Block copolymers based on poly(vinylidene fluoride), PVDF, and a series of poly(aromatic sulfonate) sequences were synthesized from controlled radical polymerizations (CRPs). According to the aromatic monomers, appropriate techniques of CRP were chosen: e
- Laruelle, Gael,Nicol, Erwan,Ameduri, Bruno,Tassin, Jean-Francois,Ajellal, Noureddine
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- Monodisperse polymer-virus hybrid nanoparticles
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The interaction of polystyrene sulfonate with coat proteins (CP) at neutral pH in different stoichiometric conditions and the formation of monodisperse nanoparticles were investigated. The nanoparticles were characterized using fast performance liquid chr
- Sikkema, Friso D.,Comellas-Aragones, Marta,Fokkink, Remco G.,Verduin, Benedictus J. M.,Cornelissen, Jeroen J. L. M.,Nolte, Roeland J. M.
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- HIGH-PURITY PARA-STYRENE SULFONIC ACID ESTER, AND METHOD FOR PRODUCING THEREOF
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PROBLEM TO BE SOLVED: To provide a high-purity para-styrene sulfonic acid ester which is excellent in radical-polymerizability, chemical stability and solubility, is a monomer having a functional group convertible to a sulfonic acid group, and is extremely useful for the production of a polymer electrolyte such as an ion-exchange membrane and a fuel cell membrane, and a method for producing thereof. SOLUTION: A high-purity para-styrene sulfonic acid ester is produced by esterification by reacting para(2-haloethylbenzene) sulfonic acid with an esterifying agent, followed by vinylation by reacting with a base. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
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Paragraph 0055
(2017/04/25)
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