This study reports a new phenomenon whereby the ionic content of random ionomer was increased by introduction hydrophobic modifier. In current study, synthesized from solution polymerization three vinyl monomers, which are polar monomers acrylonitrile (AN), glycidyl methacrylate (GMA), and monomer potassium 3-sulfopropyl (SPM), encountered an early phase separation problem when exceeded certain...

Crosslinked porous polyimide films were fabricated by a soft-template method using the microphase-separated structure based on template block copolymer. A trifunctional amine, 1,3,5-tris(4-aminophenyl)benzene (TAPB), was used as crosslinkable monomer of poly(amic acid) (PAA) to achieve well-ordered and flexible films. The crosslinking TAPB improved thermal stability nanostructures PAA/polystyre...

magnesium hydroxide nanostructures as an effective flame retardant were synthesized by a facile and rapid microwave reaction. the effect of different surfactants such as cationic, anionic and polymeric on the morphology of magnesium hydroxide nanostructures was investigated. nanostructures were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem) and fourier transform in...

the increased surface area-to-volume ratio of nanoparticles, quantum size effects and the ability to tune surface properties through molecular modification make nanostructures ideal for environmental remediation. the present piece of work reports the preparation and characterization of nano cellulosic fibers (ncfs) with further polymeric reinforcement using vinyl sulphonic acid for the remediat...

Synthesis of a double-charged cationic amphiphilic 1,4-dihydropyridine derivative with dodecyl ester groups at positions 3 and 5 the 1,4-DHP ring was performed starting from Hantzsch type cyclization acetoacetate, 2-naphthaldehyde ammonium acetate. Bromination this compound followed by nucleophilic substitution bromine (E)-4-(2-(naphthalen-2-yl)vinyl)pyridine gave desired 1,1?-{[3,5-bis(dodecyl...

Polyaniline/polystyrene (PAni/PS) composites were prepared in aqueous solution by polymerization of styrene and aniline in two-stages. Firstly styrene polymerize by using Ammonium persulfate (APS) as an oxidant in the presence of various surfactants such as poly(vinyl pyrrolidone) (PVP), hydroxypropylcellulose (HPC), poly(vinyl alcohol) (PVA) and surfactive dopant sodium dodecylbenzenesulfonate...