Electrochemical characteristic parameters such as diffusional permeability, ion transport number, fi xed charge concentration and electrical resistance for a regenerated cellulose/polypropylene-supported membrane (RC/PP sample) in contact with NaCl solutions at different concentrations were determined. The effect of the polypropylene support on mass and charge transport was estimated by compari...

The activity of dibenzylzirconium and dibenzylhafnium Salalen complexes in polymerisation of propylene with MAO as a cocatalyst is described. Three Salalen ligand precursors combining a bulky alkyl group (1-adamantyl) on the imine-side phenol and electron withdrawing halo groups of different sizes on the amine-side phenol were explored. All metal complexes were obtained as single diastereomers....

This paper presents the results and conclusions from experimental investigations concerning filtration properties of nonwovens. The needled nonwovens were made from polyester fibres (PTE) with average fibre diameter 12 micrometres and polypropylene fibres (PP) with average fibre diameter 32 micrometres. Nonwovens were produced out of each of those fibres or out of a mixture of polyester and pol...

Polypropylene / polystyrene blends containing montmorillonite (MMT) were prepared using a twin screw extruder followed by fiber spinning. The melt intercalation of PP and PS alloys was carried out in the presence of a compatibilizer such as maleic anhydride-g-polypropylene (MPP). The crystallization morphology, thermal behaviors and mechanical properties of polypropylene/polystyrene (PP/PS) nan...

Polypropylene / polystyrene blends containing montmorillonite (MMT) were prepared using a twin screw extruder followed by fiber spinning. The melt intercalation of PP and PS alloys was carried out in the presence of a compatibilizer such as maleic anhydride-g-polypropylene (MPP). The crystallization morphology, thermal behaviors and mechanical properties of polypropylene/polystyrene (PP/PS) nan...

Energy storage and mobility industries use polypropylene (PP) nanocomposites. The energy applications of newly made microporous SiO2 filled, porous PP nanocomposites combining PP, natural rubber, nanoparticles then subsequently removing rubber from the nanocomposite were explored in this paper. SEM pictures showed how pore morphology was altered by nanofillers. Mechanical tensile tests reveal t...

This work focuses on reactive extrusion to design polypropylene (PP) chains with long and short branching obtain non-linear behavior for the synthesis of low-density foams (<100 kg m?3) using a batch supercritical carbon dioxide (scCO2) foaming process. From maleic anhydride (MA) grafted PP (PP-g-MA), long-branched are performed [MA]/ [OH] reaction (with Sorbitol alcohol). On other hand, branch...

Albino Wistar rats (either sex, 225 to 250 g) were anesthetized with Sodium pentobarbitone (50 mg/kg, i.p.). Blood pressure was measured with a pressure transducer (T301) on a INCO polygraph through a polypropylene cannula placed in the carotid artery. A polypropylene cannula introduced in the jugulat vein was used for the infusion of drugs. In this study we have tried to ascertain the effect o...

The drawbacks are that the concrete has been improved by using hybrid fibre in concrete. By hybridization benefits from two different fibres utilized a single mixture. hybrids studied basalt-polypropylene fibre, polypropylene-steel steel-coconut polypropylene-e-waste polypropylene-polyvinyl Alcohol and steel-glass- polypropylene fibre. properties compressive strength, tensile flexural limited c...