Many solvents suitable for wet or dry spinning of cellulose and derivatives have also been investigated as electrospinning. Solvents are not completely volatile required coagulation steps to ensure complete removal the solvent from electrospun fibers produce stable fibers. Cellulose include acetate, hydroxypropyl cellulose, methyl ethyl‐cyanoethyl which can be dissolved in acetate particular has under a wide variety conditions subsequently deacetylated form nanofibers functionalized with...

The purpose of this study was to measure and compare the biodegradability fabrics in laboratory large scale composting environments. Cotton jersey with three levels finishing treatments (scoured bleached, softener added resin added) a polyester fabric were tested. Under controlled conditions, carbon dioxide produced monitored integrated determine biodegradation rate by ASTM D 5988–03 method natural soil, weight losses measured after enzyme solutions. same set buried Cornell University...

Abstract Cellulose nonwoven mats of submicron‐sized fibers (150 nm–500 nm in diameter) were obtained by electrospinning cellulose solutions. A solvent system based on lithium chloride (LiCl) and N, N ‐dimethylacetamide (DMAc) was used, the effects (i) temperature collector, (ii) type collector (aluminum mesh filter media), (iii) postspinning treatment, such as coagulation with water, morphology electrospun investigated. The scanning electron microscopy (SEM) X‐ray diffraction studies as‐spun...

Abstract Poly(lactic acid)(PLA)/cellulose nanocrystal nanocomposite fibers were prepared by electrospinning at elevated temperature. Columbia Blue, a nonionic hydrophobic dye with molecular weight and partition coefficient that mimics systemic agrichemical, was incorporated into the as model compound. The release of Blue water displayed little burst release. Diffusion‐controlled significantly influenced hydrophobicity electrospun PLA followed Fickian diffusion kinetics....

Poly (lactic acid) – b poly (ethylene glycol) (PLA-b-PEG) co-polymers with block lengths of 1000–750, 5000–1000, 1000–5000, and bulk PEG were added to PLA electrospinning dopes create hydrophilic but non-water soluble nanofibers. PLA-b-PEG strongly affected the total amount that could be incorporated, as well spinnability fiber morphology. Solutions containing >1% w/w lowest molecular weight co-polymer (1000) (750) formed an unspinnable, cloudy gel. Addition (5000) base spinning solution...

Lithium–sulfur (Li–S) batteries have been earning significant attention because of their high energy density and cost efficiency. Albeit these outstanding qualities, the polysulfide shuttling effect low electrical conductivity sulfur active material in this battery chemistry results poor cycling performance. In an attempt to overcome problems, a hybrid structure poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) reduced graphene oxide was developed coated on surface conventional...

In this work, biotin surface functionalized hydrophilic non-water-soluble biocompatible poly(lactic acid) (PLA) nanofibers are created for their potential use as biosensors. Varying concentrations of (up to 18 weight total percent (wt %)) were incorporated into PLA fibers together with acid)-block-poly(ethylene glycol) (PLA-b-PEG) block polymers. While provided functionalization, PLA-b-PEG hydrophilicity the final fibers. Morphology and surface-available studied by Field Emission Scanning...

Evaluating designed objects in real-world use cases enables usability optimization. For functional such as face masks, the mask must fit user initially and continue to during movements talking. This paper describes methodology development for dynamic analysis of masks using 3D head scans. Participants were scanned while wearing Basic, Cup, Petal model before after reading a passage aloud completed surveys across eight dimensions. Face measurements virtually extracted from scans quantitative...

ABSTRACT In this study, the effect of solvents on morphology and conductivity poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS) nanofibers is investigated. Conductive PEDOT:PSS are electrospun by dissolving a fiber‐forming polymer, polyvinyl alcohol, in an aqueous dispersion PEDOT:PSS. The enhanced 15‐fold addition DMSO almost 30‐fold ethylene glycol to spinning dopes. This improvement attributed change conformation PEDOT chains from coiled benzoid extended coil quinoid...

Electrospun poly(vinyl alcohol) (PVA) nanofiber membranes were functionalized by incorporating either poly(methyl vinyl ether-alt-maleic anhydride) (PMA) to create negative charges, or poly(hexadimethrine bromide) (PB) and chitosan (CS) positive charges on the fiber surface. The PVA heat-treated at elevated temperatures impart cross-linking improve water-resistance. optimum heat-treatment for both PVA/PMA PVA/PB/CS systems screened Fourier transformed infrared spectroscopy (FTIR), scanning...

Nonwoven face masks are being explored as potential multifunctional, wearable, and smart healthcare devices. The fibers in the nonwoven layers can effectively mechanically electrostatically capture submicrometer particles depending on their fiber size, porosity, surface charge. While charge enhances filtration of mechanical alone, is sensitive to moisture, heat, disinfectant solvents, storage. TriboElectric NanoGenerators (TENG) a solution leverage biomechanical action respiration generate...