The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Interaction of a synthetic biodegradable polymer, poly(methylaminophosphazene), (PMAP) with human recombinant zinc insulin at pH 7.4 and different ionic strengths was studied by means of turbidimetry, phase analysis and high-sensitivity differential scanning calorimetry. The formation of stoichiometric (insoluble) and non-stoichiometric (soluble) interpolyelectrolyte Insulin-PMAP complexes was detected...
Polymer brushes formed by identical macromolecules anchored at the solid-liquid interface may undergo conformational transitions resulting in formation of layered structures with abrupt variation of polymer density (”vertical stratification”) or in lateral decomposition that gives rise to nano-patterned interfaces. The intra-brush nanoscale segregation is governed by a balance of intermolecular interactions...
Nafion membranes coated with 5.5-bilayer poly(4-styrenesulfonate) (PSS)/protonated poly(allylamine) (PAH) films show Li+/Co2+ and K+/La3+ selectivities >1000 in electrodialysis (ED). The corresponding selectivities of bare Nafion are <2. Even with adsorption of only 3 polyelectrolyte layers, Nafion membranes exhibit a Li+/Co2+ selectivity >23. However, the resistance to monovalent-ion passage...
We present the synthesis and characterization of zwitterionic homopolymers and copolymers based on poly(2-vinyl pyridine) (P2VP). Different molar masses as well as copolymer compositions of poly(styrene-co-2-vinyl pyridine) (P(2VP-co-S) were synthesized using RAFT (reversible addition fragmentation chain transfer) polymerization, followed by quaternization of the nitrogen atom by either 1,3-propanesultone...
The combination of block copolymer templating with electrostatic self-assembly provides a simple and robust method for creating nano-patterned polyelectrolyte multilayers over large areas. The deposition of the first polyelectrolyte layer provides important insights on the initial stages of multilayer buildup. Here, we focus on two-dimensionally confined “dots” patterns afforded by block copolymer...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.