Background. Various cationic polymers have been proposed for use as carriers of genetic materials in biotechnology and biomedicine. The poly(2-dimethylamino)ethyl-methacrylate (poly(DMAEMA)) demonstrated high transfection efficiency low cytotoxicity when used a gene delivery system. aim the present study was to evaluate ability poly(DMAEMA)-block-poly(N-vinylpyrrolidone)-co-(butyl-acrylate)-co-...

Flame-retardant polymeric coatings with high limiting oxygen index (LOI) were prepared by combining inorganic mineral huntite (H5) and additives synthesized in the present work into a formulation. In order to improve dispersion of Mg- (and Ca)-based H5 particles, containing phosphonium acidic groups employed homogenize fillers polymer matrix. Specific blend combinations commercial matrix Ecrovi...

Extreme ultraviolet (EUV) lithography is required for advanced node semiconductor device fabrication. The stochastic effects in EUV are problematic, especially with regards to pattern roughness and defect formation. In this study, we performed atomic force microscopy (AFM) on an photoresist surface determine the roughness, height histogram, line scan, area ratio, power spectral density (PSD). P...

poly methyl methacrylate (pmma) is the most common material used in prosthodontics. several studies indicate a breakdown of the number of very high resin bases after 2 to 3 years to avoid breaking bass and several attempts have been made, such as altering the chemical structure of resin by adding causes cross linking or copolymerization. the innovative method for improving the physical properti...

The temperature response of micellar aggregates of poly(n-butyl acrylate)-b-poly(N-isopropylacrylamide)-carboxylic acid (PnBA-b-PNIPAM-COOH) end-functionalized diblock copolymers in aqueous solutions is investigated by small angle neutron scattering and light scattering techniques. The particular micellar aggregates present -COOH groups at their surface due to the molecular architecture of the ...

PURPOSE To verify the permanence of total occlusion of cerebral arteriovenous malformations after embolization with N-butyl cyano-acrylate and to evaluate the occlusion rate. METHODS One hundred thirty-four patients were treated for cerebral arteriovenous malformations with N-butyl cyano-acrylate embolization after superselective catheterization. Those initially totally occluded have been fol...

Reversible addition-fragmentation chain transfer polymerization (RAFT) was used to prepare polymer brushes grafted onto silica nanoparticles. Novel RAFT-silane agents were prepared that contained both an active RAFT moiety and a silane coupling agent. RAFT agents were anchored to silica nanoparticles by the functionalization of colloidal silica with the RAFT-silane agents. RAFT polymerizations ...