Electrospun magnetic fibrillar polyarylene ether nitriles nanocomposites reinforced with Fe‐phthalocyanine/Fe₃O₄ hybrid microspheres

Abstract

The electrospinning method has been employed to fabricate ultrafine nanofibers of high-performance polyarylene ether nitriles (PEN) and PEN/Fephthalocyanine/Fe 3 O 4 nanocomposite fibers for the first time. Through optimizing the operational conditions, such as polymer concentration, applied electric voltage, federate, and distance between needle tip and collector, beadfree and uniform fibers with smooth surfaces and certain diameters were obtained. The morphology of the PEN nanofibers is correlated to the corresponding rheological behaviors of the polymer solutions. The nanocomposite fibers showed a beads-in-string structures without agglomeration after introducing the Fe-phthalocyanine/Fe 3 O 4 hybrid microspheres in the polymer fibers. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) reveal an enhanced thermal stability of the nanocomposite fibers after introducing the hybrids. The glass transition temperature (T g ) of the nanocomposite fibers increases by 10 C with 30 wt % hybrid microspheres, compared with those of the pure PEN fibers. The magnetic properties of the PEN/Fe-phthalocyanine/Fe 3 O 4 nanocomposite fibers are different from those of the hybrid microspheres. The hybrid microspheres in the composite nanofibers become magnetically harder with a much larger coercivity than that of the fillers.

In Vivo Investigation into Effectiveness of Fe3O4/PLLA Nanofibers for Bone Tissue Engineering Applications

“…However, when PLLA is mixed with other materials, the biocompatibility of these additives becomes an important concern. Previous studies have shown that Fe 3 O 4 nanoparticles have an osteogenic effect on bone cells [26,28,37]. Chang et al (2015) mixed Fe 3 O 4 nanoparticles into PLLA to form a biodegradable and radiopaque material for X-ray imaging-enhanced bone screws.…”

“…The literature contains many studies on the incorporation of Fe 3 O 4 nanoparticles into nanofibers using an electrospinning technique [28,29,31,37,39,40]. However, most of these studies focus on the physical properties of the nanofibers or the development of novel fabrication techniques.…”

Recent progress on the poly(arylene ether)s-based electrospun nanofibers for high-performance applications

“…In order to reduce crystallinity and therefore to improve the processability of PEN by molecular design, some noncoplanar and twisted structures, such as PP, BPA, PPL and hydroquinone sulfonic acid sodium salt (SHQ), were incorporated in the backbone. Fanbin Meng et al used a PEN copolymer (P16 in figure 4) derived from BPA and resorcinol monomers as an electrospun fiber matrix [65,66]. Iron phthalocyanine (FePc) was mixed with P16 in DMF and then, materials with various size distributions and morphologies were fabricated by modulating the P16 concentration, electric voltage, and distance between needle and collector.…”

Sulfonated poly(arylene ether nitrile)/polypyrrole core/shell nanofibrous mat: an efficient absorbent for the removal of hexavalent chromium from aqueous solution

“…Therefore, PEN would exhibit remarkable advantages when used for preparing polymer mats compared with the polymer matrix mentioned above. Until now, we have prepared various PEN fibers, which exhibit excellent thermal and mechanical properties . Recently, carboxylic PEN fiber mats were developed for adsorption of Cu 2+ and a maximum adsorption capacity of 52.77 mg g −1 was obtained .…”

“…Until now, we have prepared various PEN fibers, which exhibit excellent thermal and mechanical properties. [46][47][48] Recently, carboxylic PEN fiber mats were developed for adsorption of Cu 2+ and a maximum adsorption capacity of 52.77 mg g −1 was obtained. 49 Nonetheless, the limited adsorption capacity still cannot satisfy the requirements for the removal of heavy metal ions.…”