A series of new sulfonated poly(arylene ether)s containing one sulfonic acid group, located on a pendant phenyl sulfonyl moiety, at every repeat unit was synthesized using 3-sulfonated-3’, 5’-difluorophenyl Sulfone, 4, and a variety of bisphenols. A conventional nucleophilic aromatic substitution (NAS) was utilized for the homopolymerization and copolymerization reactions. Polymerization reacti...

The synthesis of vinyl bromobutanoate (VBr), a new vinyl acetate monomer derivative obtained by the palladium-catalyzed vinyl exchange reaction between vinyl acetate (VAc) and 4-bromobutyric acid is reported. The homopolymerization of this new monomer using the RAFT/MADIX polymerization technique leads to the formation of novel well-defined and controlled polymers containing pendent bromine fun...

By using 4-C-hydroxymethyl-alpha-D-pentofuranose as the sugar core and lipase-catalyzed transformations, a macromer was constructed with exceptional control of substituent placement around the carbohydrate core. The key synthetic transformations performed were as follows: (1) selective lipase-catalyzed acrylation along with prochiral selection of 4-C-hydroxymethyl-1,2-O-isopropylidene-alpha-D-p...

Objectives . To synthesize phosphorus-containing oligoestermethacrylates spatially separated by spacers of aliphatic or aromatic structure and evaluate their effect on photocuring kinetics. Methods For determining the qualitative quantitative composition synthesized compounds, following methods were used: thin layer chromatography; chromatographic mass spectrometry; infrared spectroscopy; 1H, 1...

The aqueous radical homopolymerization of vinylidene fluoride (VDF), as well its copolymerizations with hexafluoropropylene (HFP) or perfluoromethyl vinyl ether (PMVE), and terpolymerization HFP PMVE, initiated by trifluoromethyl radicals (•CF3), generated from the ammonium persulfate (APS) potassium sulfinate (CF3SO2K) redox system are presented. optimization experimental conditions in terms i...

Sequential dual-cured epoxy composites, based on off-stoichiometric thiol–epoxy mixtures catalysed by 1-methylimidazole, have been developed adding carbon nanotubes (CNT). The curing process initially consists in two thermally activated stages: a first reaction and later homopolymerization at higher temperature. This system presents easy shaping/conforming shape memory properties through thermo...

A novel imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalyst for ethylene and ethylene/1-hexene polymerization is investigated. The catalyst is prepared by modification of (SiO2/MgO/MgCl2)TiClx Ziegler-Natta catalysts via supporting vanadium species followed by reaction with p-tolyl isocyanate as imido agents, to get the merits from both the SiO2-supported imido vanadium catalyst and the ...

The value and merit of triethylborane (TEB)-based ate complexes for the synthesis various oxygenated polymers have been recently illustrated through successful examples homopolymerization epoxides their copolymerization with CO2, CS2, COS, anhydrides, isocyanates, etc. To further expand scope TEB-based initiating systems to a broader family polymers, they were used in this study anionically pol...