In this research thin film heterogeneous cation exchange membrane was prepared by interfacial polymerization of polyacrylic acid-co-iron nickel oxide nanoparticle son PVC based substrate. Spectra analysis confirmed graft polymerization conclusively. The SEM images showed that polymerized layer covers the membranes by simple gel network entanglement. Results exhibited that membrane water content...

ethylene was polymerized in slurry phase over a ticl4/mg(oc2h5)2 catalyst activated by al(c2h5)3. it was shown experimentally that mass transfer resistance has no effect on polymerization kinetics. after estimation ofthe active site concentration by inhibition method with carbon monoxide, the effects of polymerization temperature, monomer and cocatalyst  oncentrations and hydrogen were investig...

Background and Aim: Minimizing the polymerization shrinkage of composite resins is a critical goals in composite restorations. Many factors affect polymerization shrinkage. This study aimed to evaluate the effect of composite resin shade on polymerization shrinkage. Materials and Methods: In this in vitro study, 14 composite discs measuring 1.5×8 mm were fabricated. The samples were prepared u...

The classical method of producing cellulose oligomers through hydrolysis microcrystalline (MCC) in phosphoric acid has been re-examined. Hydrolysis products are fractionated by precipitation to yield two types with different average degrees polymerization (DP). number- and weight-averaged molecular weights the lower DP fraction 1339 g/mol 1388 respectively, corresponding a polydispersity index ...

Supercapacitors (SCs) have received much interest due to their enhanced electrochemical performance, superior cycling life, excellent specific power, and fast charging–discharging rate. The energy density of SCs is comparable batteries; however, power cyclability are higher by several orders magnitude relative batteries, making them a flexible compromising storage alternative, provided proper d...

The biobased renewable monomer 2,5-diformylfuran is polymerised using various N-heterocyclic carbene (NHC) catalysts in dimethyl sulfoxide (DMSO) affording a low molar mass polymer. It shown that catalyst structure as well the temperature and time polymerization running have noticeable effect on its mass. obtained material characterized by nuclear magnetic resonance (NMR), thermogravimetric ana...