amodified technique is designed to prepare aligned nanofibers to challenge the existing limitations in collecting methods of nanofibers such as, thickness of collected layer, alignment and productivity of nanofibers. collecting and simultaneously heating of the aligned nanofibers were carried out by using a rotating drum fixed on top of syringe needles and applying hot air flow. this electrospi...

Adsorption has become an attractive method for the extraction and recovery of metals from wastewater effluents. This study involved fabrication mesoporous neat polyacrylonitrile (PAN) monoliths composite polymer PAN poly-4-vinylpyridine (P4VP) as adsorbents toxic elements (As(V), Cr(VI)) PGMs(Ru(III), Rh(III), Pd(II)) simulated solutions. Fabrication was conducted using non-solvent induced phas...

Since crazes have a porous structure in the order of tens nanometers, if they could be generated periodically polyacrylonitrile (PAN), which is raw material for carbon fiber, we can create new materials (e.g., films with periodic layers). However, according to Wu, PAN polymer that predominant yield behavior than craze behavior. Therefore, this study, generate polymers behavior, such as PAN, use...

Abstract First, we present a fabrication process for electrospun carbon fiber mats with mean diameters between 108 nm and 623 nm. The were produced by electrospinning of polyacrylonitrile (PAN) solutions subsequent carbonization. feature small variations their properties that are required parameter studies. Second, investigate the kinetics steam CO 2 activation three different temperatures time...

the objective of this research work is to evaluate the surface roughness of polyacrylonitrile (pan) nanowebs. for this purpose the nanowebs have been prepared in different concentrations of pan solution from 11 to 15% (by wt). surface roughness of nanowebs was evaluated by entropy algorithm (ent) as well as atomic force microscopy (afm) and then the results of two methods have been compared. to...

The thermal degradation and flammability characteristics of some common fibre-forming polymers, such as polypropylene (PP) polyacrylonitrile (PAN), are described in this review paper. flame retardance these polymers is principally affected by reactive routes that were primarily developed our laboratories. modifying groups incorporated into polymeric chains include phosphorus- or phosphorus/nitr...

Water pollution is increasing with rapidly growing industries and world population, which very harmful for marine life humans as well. This research has been conducted to introduce novel material advanced techniques the effective removal of heavy metals from wastewater. Successful nanofiber membranes have developed hemp charcoal (HC) polyacrylonitrile (PAN), can remove water efficiently in less...