Electrospun nanofiber membrane (ENM) with huge specific surface area is an ideal solid substrate for sensors. However, only a few ENMs are developed into colorimetric sensors and it even more challenging to fabricate multiple-ion-responsive ENM-based sensor. In this study, benefiting from the excellent metal ion adsorption ability of poly(aspartic acid) (PASP) high nanofibers, reusable sensor utilizing PASP electrospun hydrogel (ENHM) was designed detect Cu2+ Fe3+ in aqueous solution simple...

The native extracellular matrix (ECM) is composed of a cross-linked porous network multifibril collagens and glycosaminoglycans. Nanofibrous scaffolds silk fibroin (SF) hydroxybutyl chitosan (HBC) blends were fabricated using 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) trifluoroacetic acid (TFA) as solvents to biomimic the ECM via electrospinning. Scanning electronic microscope (SEM) showed that relatively uniform nanofibers could be obtained when 12% SF was blended with 6% HBC at weight ratio...

Fe3O4@Au/polyaniline (PANI) nanocomposites were fabricated by in situ polymerization the presence of mercaptocarboxylic acid. The acid was used to introduce hydrogen bonding and/or electrostatic interaction; it acts as a template formation Fe3O4@Au/PANI nanorods. morphology and structure resulting analyzed scanning electron microscopy (SEM), transmission (TEM), Fourier transform infrared spectroscopy, x-ray diffraction energy dispersion spectroscopy (EDS). It found that rod-like with an...

The regenerated Araneus ventricosus spider dragline silk protein fibrous scaffold with moderate strength and flexibility was fabricated by electrospinning post treatment 90 vol % acetone. effect of collection method on the morphology (RSSP) scaffold, effects solvents their concentrations molecular conformation, crystallinity mechanical properties were studied. results show that affected solvent used in coagulation bath. property this strongly kind slightly influenced its concentration when...

Three types of lignin/poly(ethylene oxide) (PEO) blend filaments with different PEO percent were prepared by melt spinning. The effects and lignin type on the morphology, mechanical property, thermostability systematically studied. morphologies observed optical microscope. properties measured an Instron model Isx. results showed that effect lignin/PEO blending ratio was not a simple function content. flexibility filament increases as thermal stability decreases. A 15% content produces best...

This study aimed to fabricate nanofibrous scaffolds which could biomimic the natural extracellular matrix from aqueous solutions of silk fibroin and hyaluronic acid blends (SF/HA) by means electrospinning. Scanning electronic microscopy results indicated that electrospun SF/HA nanofibers were ribbon-shaped their average width obviously decreased with increase HA content. However, there is no fiber observed when volume further increased 50% overall volume. After being treated 75% ethanol...

An approach was presented in this article for organizing the polyaniline (PANI) nanoparticles using polypeptide as template. PANIs were chemically synthesized different weight ratios of poly(d-Glu-d-Lys) (PDGDL)/aniline (Ani) (mg/g) feed, doped acid, and polymerization time. Scanning electron microscopy X-ray diffraction analysis showed that PDGDL dictated organization PANI nanoparticles. The formation shape crystal structures strongly affected by parameters including ratio PDGDL/Ani,...

In this study, poly(L-lactic acid)/ammonium persulfate doped-polypyrrole composite fibrous scaffolds with moderate conductivity were produced by combining electrospinning in situ polymerization. PC12 cells cultured on these and their growth following electrical stimulation (0-20.0 μA stimulus intensity, for 1-4 days) was observed using inverted light microscopy, scanning electron microscopy coupled the MTT cell viability test. The results demonstrated that scaffold a dual multi-porous...

Abstract An axially aligned three‐dimensional (3‐D) fibrous scaffold was fabricated with regenerated spider silk protein (RSSP)/poly ( l –lactic acid) (PLLA) through electrospinning and post treatment. The morphology, mechanical degradation properties of the were controlled weight ratio RSSP to PLLA, thickness treatment time. a 2:3 (RSSP:PLLA) had nanoleaves‐on‐nanofibers hierarchical nanostructure; length nanoleaves about 400 30 nm, respectively. holes scaffolds ranged from hundreds...

The chondroitin sulfate (CS)/sodium alginate (SA)/chitosan nanoparticles were prepared by electrostatic spraying technology. Laser particle size analyzer measurements indicated that the of particles is strongly affected weight ratio raw materials, receiver rotation speed, injection rate, and so on. increased distribution moved towards direction large with decrease applied voltage increase flow rate SA to CS; there an optimal value for effect stirring on distribution. different ratios...

Abstract Coaxial electrospinning is a practical technique to combine the advantages of different materials. In this work, polyaspartic acid (PASP) fibers hydrogel membrane (FHM) was enhanced by thermoplastic polyurethane (TPU) via coaxial electrospinning. Firstly, polysuccinimide (PSI) served as intermediate PASP employed for electrospining with TPU. TPU/PSI core-shell fiber possessed cracked shell on core, uniform structure, dumbbell-shape and beaded-on-string morphology according...

Owing to the relatively high carrier mobility and on/off current ratio, monolayered SnS2 has advantage of suppressing drain-to-source tunneling for short channels, rendering it a promising candidate in field-effect transistor (FET) applications. To extend scaling limit channel length, we propose rationally modulate electronic properties through customized design point defects simulate its performance sub-5 nm double-gate FETs (DGFETs), using density functional theory combined with...

The poly (L-lactic acid) (PLLA) micro/nano fibrous multi-porous films are fabricated by electrospinning.The effect of flow rate, spinning time and the type solvent on mechanical properties, pore volumes, distributions size specific areas PLLA were studied.The results show that average diameter volume pores in film, area property electrospun film strongly affected rate solution, used to prepare solution.There is an approximately negative correlation among pores, strength films.