Fibrous Phase Research Articles

An interesting phase transition in polyamide 6/nitrile rubber blend induced by temperature and pressure and its effect on tribological performance

AbstractThe preparation of high‐performance rubber‐plastic blending elastomers has always been a research hotspot in the field of petroleum equipment. The two‐phase separation structure of the blend determines the macroscopic properties of the materials. It is of great significance to deeply explore the influence of processing technology on the two‐phase separation structure. In this paper, polyamide 6 (PA6)/nitrile rubber blends were prepared via the melt–compounding method. To meet the requirements of oil production and oil transport equipment, we investigated systematically the mechanical properties of the specimens exposed to different environments. The oil resistance and high‐temperature resistance of the blends were enhanced considerably with the addition of PA6. The temperature and pressure fields induced a novel transition from particle into fibrous phase based on Ostwald's ripening. However, this brand new transformation showed no benefits to the improvement of the frictional performance. Meanwhile, the relationship between aggregate structure and mechanical performance was demonstrated from the aspects of crystallization behavior and phase morphology.

Structural Phase Separation of Membranes and Fibers.

Lipid membranes interact with protein filaments on a superstructural level such that they may colocalize or spatially segregate in a living cell, whereas higher-order organization of membranes and fibers is less well explored in artificial systems. Herein, we report on the structural separation of a dispersed, membranous phase and a continuous, fibrous phase in a synthetic system. Systematic characterization of its thermodynamics and kinetics uncovers a physical principle governing phase separation: Interlamellar repulsion, favoring expansion of the membranous phase, is balanced by fibrous network elasticity, preferring the opposite. A direct consequence of this principle is the spatial addressability of the phase separation, preferably localized to soft regions of the fibrous network. Guided by this principle, we design a fibrous network with different spatial heterogeneity to modulate the phase separation, realizing a "memory" effect, patterned separation, and gradient separation. The current spatially addressable phase separation is in great contrast to the conventional ones, in which nucleation is difficult to predict or control. The fact that the membranous and fibrous phases compete for space has implications for the intracellular interactions between endoplasmic reticulum membranes and cytoskeletal filaments.

Thermal behavior of flexible and breathable sandwich fibrous polyethylene glycol (PEG) encapsulations

Textiles incorporating phase change material have attracted increasing attention due to their temperature regulating function. Although a great progress has been made in the development of phase change material textiles, it has been found that the loading amount of phase change materials is limited by other final properties. Recently, we have proposed a sandwich fibrous phase change material encapsulation with a relatively high phase change material loading amount, which is a multi-layer fabric structure containing phase change material. However, the breathability of sandwich fibrous phase change material encapsulation should be improved because there is no path for air to penetrate through. In this work, the sandwich fibrous phase change material encapsulation structure with polyethylene glycol as phase change material is modified by introducing different air pockets in the thermal function layer ranging from 19% to 64%. The leakage phenomenon, phase transition behavior, thermal energy storage, breathability, T-history and practicality of the breathable sandwich fibrous phase change material encapsulations are investigated. As a result, the maximum polyethylene glycol loading amount of the phase change materials pocket is 83 wt%, and there is no leakage of polyethylene glycol during working time. The overall enthalpy value of the breathable sandwich fibrous phase change material encapsulation ranges from 27 J/g to 48 J/g. The optimal air permeability and water vapor resistance of the breathable sandwich fibrous phase change material encapsulation is 9 mm/s under 100 Pa and 34.5 m2 Pa W−1. Furthermore, the heterogeneous heat transfer through the breathable sandwich fibrous phase change material encapsulation is found due to the complicated thermal resistances of the hybrid thermal functional layer. In addition, for breathable sandwich fibrous phase change material encapsulation, the flexibility, hydrophobicity, self-cleaning property, abrasion resistance, and stability after water immersion are found. We believe the research has a great potential in various applications related to phase change material.

Extraction of Ag3Sn nanowires bundle and its electrochemical characteristics

The Ag3Sn nanowires (NWs) bundle embedded in the Sn-3.5Ag eutectic alloy bar directionally solidified was extracted by utilizing electrochemical selective corrosion, during which the Sn-base was dissolved and the Ag3Sn fibrous phase was remained. The diameter of Ag3Sn NWs decreases with the increasing of directional solidification rate, and their length increases with the corrosion duration. Utilizing the electrochemical alternative current (AC) impedance method and the cyclic voltammetry (CV), the interfacial impedance and the charge storage capacity of electrodes with Ag3Sn NWs bundle were tested in 0.9 % NaCl aqueous solution. The measuring results indicated that the lowest interfacial impedance appeared at the average length of nanowires with 8 µm, whereas the charge storage capacity was increased constantly with the length of Ag3Sn NWs. These electrochemical characteristics make the Ag3Sn NWs bundle electrodes possible to be applied as the electrophysiological electrode. A series of trial EEG (electroencephalogram) tests showed that the EEG signals of Ag3Sn NWs dry electrodes had a higher correlation to that of Ag/AgCl wet electrodes.

Reinforcement efficiency from weak polymer chain interaction between polyamide and hydrogenated nitrile: A comparative study of polyamide 1212 and polyamide 6

In polymer blends, the macroscopic properties are directly affected by the phase separation morphology. For polyamide/hydrogenated nitrile blends, the factors that influence the relationship between the reinforcement effect and the phase separation morphology are unclear. In this study, the reinforcing effects of polyamide 6 (short-chain polyamide) and polyamide 1212 (long-chain polyamide) in the hydrogenated nitrile (HNBR) matrix were comparatively analyzed. Deep analysis was performed on the mechanical properties, oil resistance, dynamic mechanical properties, and tribology properties of the blends. Results show that the interaction of polyamide 6 (PA6) with the HNBR chains was stronger than that of polyamide 1212 (PA1212). However, PA1212 exhibited a better enhancement effect than PA6 on the matrix. In the 20 wt% PA1212/HNBR blend, no friction marks were observed on the surface of the specimen. This phenomenon can be attributed to the synergistic effect of the uniformly dispersed particle and fibrous phase of PA1212 induced by the HNBR matrix. The formation of this special structure was closely related to the weaker physical interaction between two different phases (i.e., lower Tg, smaller wavenumber shift, and weaker heterogeneous nucleation effect). This result was creative and could provide theoretical and experimental support for the regulation of the phase separation morphology of PA/HNBR blends with high performance.

Optimized Crystal Framework by Asymmetric Core Isomerization in Selenium-Substituted Acceptor for Efficient Binary Organic Solar Cells.

Both the regional isomerization and selenium-substitution of the small molecular acceptors (SMAs) play significant roles in developing efficient organic solar cells (OSCs), while their synergistic effects remain elusive. Herein, we developed three isomeric SMAs (S-CSeF, A-ISeF, and A-OSeF) via subtly manipulating the mono-selenium substituted position (central, inner, or outer) and type of heteroaromatic ring on the central core by synergistic strategies for efficient OSCs, respectively. Crystallography of asymmetric A-OSeF presents a closer intermolecular π-π stacking and more ordered 3-dimensional network packing and efficient charge-hopping pathways. With the successive out-shift of the mono-selenium substituted position, the neat films give a slightly wider band gap and gradually higher crystallinity and electron mobility. The PM1 : A-OSeF afford favourable fibrous phase separation morphology with more ordered molecular packing and efficient charge transportation compared to the other two counterparts. Consequently, the A-OSeF-based devices achieve a champion efficiency of 18.5 %, which represents the record value for the reported selenium-containing SMAs in binary OSCs. Our developed precise molecular engineering of the position and type of selenium-based heteroaromatic ring of SMAs provides a promising synergistic approach to optimizing crystal stacking and boosting top-ranked selenium-containing SMAs-based OSCs.

Optimized Crystal Framework by Asymmetric Core Isomerization in Selenium‐Substituted Acceptor for Efficient Binary Organic Solar Cells

AbstractBoth the regional isomerization and selenium‐substitution of the small molecular acceptors (SMAs) play significant roles in developing efficient organic solar cells (OSCs), while their synergistic effects remain elusive. Herein, we developed three isomeric SMAs (S‐CSeF, A‐ISeF, and A‐OSeF) via subtly manipulating the mono‐selenium substituted position (central, inner, or outer) and type of heteroaromatic ring on the central core by synergistic strategies for efficient OSCs, respectively. Crystallography of asymmetric A‐OSeF presents a closer intermolecular π–π stacking and more ordered 3‐dimensional network packing and efficient charge‐hopping pathways. With the successive out‐shift of the mono‐selenium substituted position, the neat films give a slightly wider band gap and gradually higher crystallinity and electron mobility. The PM1 : A‐OSeF afford favourable fibrous phase separation morphology with more ordered molecular packing and efficient charge transportation compared to the other two counterparts. Consequently, the A‐OSeF‐based devices achieve a champion efficiency of 18.5 %, which represents the record value for the reported selenium‐containing SMAs in binary OSCs. Our developed precise molecular engineering of the position and type of selenium‐based heteroaromatic ring of SMAs provides a promising synergistic approach to optimizing crystal stacking and boosting top‐ranked selenium‐containing SMAs‐based OSCs.

Isomeric Small Molecule Donor with Terminal Branching Position Directly Attached to the Backbone Enables Efficient All‐Small‐Molecule Organic Solar Cells with Excellent Stability

AbstractAll‐small‐molecule organic solar cells (ASM‐OSCs) are challenging for their inadequate efficiency and device stability due to their more susceptive morphology. Herein, a family of isomeric small molecule donors (SMDs) is synthesized based on the benzodithiophene–terthiophene core with linear, 1st carbon, and 2nd carbon position branched butyl‐based rhodanine for ASM‐OSCs, respectively. The single crystal of thiophene‐substituted model T‐s‐Bu forms a more compact intermolecular packing with herringbone structure than slip‐layered packing‐based T‐n‐Bu and T‐i‐Bu. SM‐i‐Bu and SM‐s‐Bu show slightly blue‐shifted absorption and deepened HOMO levels in the neat film compared to SM‐n‐Bu. SM‐s‐Bu:BO‐4Cl blend films have distinct face‐on packing orientations and suitable fibrous phase separation along with more apparent microcrystals. Finally, SM‐s‐Bu:BO‐4Cl‐based device yields an improved power conversion efficiency of 16.06% compared to 15.12% and 8.22% for SM‐n‐Bu:BO‐4Cl and SM‐i‐Bu:BO‐4Cl, which is one of the top‐ranked results for BTR‐series SMDs in binary ASM‐OSCs. More importantly, the excellent storage stability with a T80 lifetime of over 1700 h and decent thermal stability is realized in SM‐s‐Bu:BO‐4Cl. This work highlights that the isomeric terminal alkyl with a branching point directly connected to the backbone for SMDs is a promising strategy for improving the crystal packing and film morphology and achieving highly efficient and stable ASM‐OSCs.

VIRUSES AND THEIR PENETRATION THROUGH FIBROUS STRUCTURES: A REVIEW

In the first part of this review the necessary information about structure and chemical composition of viruses are briefly discussed on the basic level. Main types of interaction of viruses with human cells are briefly described. The basic method of suppressing the spread of viruses from the surroundings of a healthy person and into the surroundings of an infected person is the use of protective equipment, especially face masks and respirators, where the active element is a fibrous structure. The protective functions of these structures depend on their composition (usually hydrophobic materials), construction (fabrics, knitted fabrics, nonwoven fabrics, nano-meshes), morphology (porosity, thickness, pore distribution), the form of virus propagation (usually in water droplets as a type of aerosol), interaction conditions with the surface of the protective layer (speed of impact, conditions of capture on the surface of the fibrous phase, speed of penetration) and the method of virus inactivation (usually contact or very short-range interaction). It is therefore a very complicated problem that is often solved using a combination of mathematical modeling and simulation. The purpose is to present some methods of solving problems related to the protective function of fiber structures, which allow the specification of the suitability of these structures for real use.

Strengthening and toughening mechanisms of P-rich phase in Cu-4Sn-P alloy wire

The Cu-4Sn and Cu-4Sn-0.15P alloys with rod diameter of 12.5 mm were prepared and then cold drawn to 2.6 mm via multi-pass drawing. The microstructure evolutions, mechanical properties, and electrical conductivity of Cu-4Sn and Cu-4Sn-0.15P alloys were comprehensively analyzed using optical microscope, scanning electron microscope, tension test and electrical conductivity tester. As compared with the P-free alloy, the addition of P can form a new kind of P-rich phase in the Cu-4Sn alloy, and thus refine the casting microstructure via pinning the grain boundary. The toughening mechanisms of P-rich phases in Cu-4Sn-P alloy wires during cold drawing were investigated. With accumulative drawing strain, the spherical P-rich phase gradually changes into fibrous phases, which thus introduce obvious fiber reinforced strengthening. In addition, the distribution of P-rich phase also enhances the< 111 > texture, and promotes the growth of fragmentation zone. It contributes to an improved ultimate tensile strength and final elongation from 664.5 MPa and ∼ 0 % in Cu-4Sn alloy to 970.5 MPa and 1.53 % in Cu-4Sn-0.15P alloy. Finally, the conductivity for Cu-4Sn-0.15P decreases slightly owing to the intensified electron scattering with high amount of primary phase after the addition of P element.

Control of graphene nanoplatelets at the interface of the co-continuous polypropylene/polyamides 6 blend under the elongational flow

Controlling the filler selective distribution at the interface of co-continuous polymer blend is an effective way to fabricate high performance composites. In this work, the graphene nanoplatelets (GNPs) were distributed at the interface of co-continuous polypropylene (PP)/polyamides 6(PA6) blend by melt blending under the elongational flow generated by convergent-divergent channels. And the formation of co-continuous structure and migration mechanism of GNPs in the PP/PA6 blend under the elongational flow were discussed based on the analysis of rheological measurement, scanning electron micrographs, selective etching experiment and thermal conductivity measurement. The results show that both PP and PA6 phase are elongated into fibrous phase structure under the elongational flow. This indeed enlarge the volume ratio range of composites forming co-continuous structure. And GNPs are oriented along the phase interface and stay at the interface during migration under the elongational flow, which can improve its in-plane thermal conductivity. The in-plane thermal conductivity of the PP/PA6/GNPs composites prepared under the elongational flow are all higher than those prepared under the shear flow. Particularly, the composite prepared under the elongational flow with the 65/35 vol ratio of PP/PA6 still kept a co-continuous structure and the GNPs distributed at the interface. Its in-plane thermal conductivity reached a maximum value of 1.13 W/m K.

Minimum design requirements for a poroelastic mimic of articular cartilage

The exceptional functional performance of articular cartilage (load-bearing and lubrication) is attributed to its poroelastic structure and resulting interstitial fluid pressure. Despite this, there remains no engineered cartilage repair material capable of achieving physiologically relevant poroelasticity. In this work we develop in silico models to guide the design approach for poroelastic mimics of articular cartilage. We implement the constitutive models in FEBio, a PDE solver for multiphasic mechanics problems in biological and soft materials. We investigate the influence of strain rate, boundary conditions at the contact interface, and fiber modulus on the reaction force and load sharing between the solid and fluid phases. The results agree with the existing literature that when fibers are incorporated the fraction of load supported by fluid pressure is greatly amplified and increases with the fiber modulus. This result demonstrates that a stiff fibrous phase is a primary design requirement for poroelastic mimics of articular cartilage. The poroelastic model is fit to experimental stress-relaxation data from bovine and porcine cartilage to determine if sufficient design constraints have been identified. In addition, we fit experimental data from FiHy™, an engineered material which is claimed to be poroelastic. The fiber-reinforced poroelastic model was able to capture the primary physics of these materials and demonstrates that FiHy™ is beginning to approach a cartilage-like poroelastic response. We also develop a fiber-reinforced poroelastic model with a bonded interface (rigid contact) to fit stress relaxation data from an osteochondral explant and FiHy™ + bone substitute. The model fit quality is similar for both the chondral and osteochondral configurations and clearly captures the first order physics. Based on this, we propose that physiological poroelastic mimics of articular cartilage should be developed under a fiber-reinforced poroelastic framework.

A double-phase constitutive model for municipal solid waste with a fiber pullout criterion to evaluate the softening behavior

Flowslide disasters of municipal solid waste (MSW) landfills generally have a long flow distance. In the condition of extremely large deformation, the strength of MSW cannot be reinforced by embedded fibers (also called hardening) with fiber pullout. To describe this softening behavior of MSW in a state of large strain, this study proposes a double-phase constitutive model with a fiber pullout criterion. The mechanical response of MSW is attributed to the basic phase and the fibrous phase described by the modified Cam-Clay (MCC) model with an extension and a pressure-dependent elastic model, respectively. The fiber pullout criterion is governed by the shear stress acting on the fiber-particle interface and the stress state of the fibrous phase. The compressibility of MSW particles is also considered to well reproduce the variations of effective stress in undrained conditions. The model is verified with the previous triaxial tests in drained and undrained conditions, and the mechanism of MSW softening behavior is revealed through a parametric study. Results show that the fiber pullout occurs before the strength of MSW reaches its peak and the stress state remains stable when all fibers are pulled out.

Fabrication of high-performance piezoelectric composite from commingled waste plastic films via a novel physicomechanical technology

The highly efficient and environmentally friendly reuse of waste plastics is always a big challenge worldwide, especially for commingled waste plastics. In this study, based on a novel pan-milling equipment, a simple, efficient and green physicomechanical technology, i.e. solid-state shear milling (S3M) technology, was established to realize the high-quality reuse of the commingled waste plastic films (CWPF) composed of polypropylene (PP), nylon 6 (PA6), polyethylene terephthalate (PET) and polyethylene (PE), as well as their good complexation with BaTiO3. Under the strong 3D-shear force of this milling equipment, the proper phase size of CWPF and the good compatibility between the components in CWPF were achieved, endowing the milled CWPF powders with significantly improved reprocessability. After milling for 30 cycles, ascribing to the formation of the fibrous phases, the tensile strength of the reprocessed CWPF sheet reached 18.7 MPa, increasing by 285% compared with the one without milling. Through co-milling, BaTiO3 piezoelectric particles were successfully incorporated into CWPF, and high-performance CWPF/BaTiO3 composite sheets were obtained. With 15 vol% BaTiO3, the composite sheet has the flexural strength of 17 MPa and compressive strength of 90 MPa, and could directly produce 95 V and 1.56 μA piezoelectric outputs to power 20 LED bulbs, or to charge a 1 μF commercial capacitor to 6.03 V within 100 s, surpassing most of BaTiO3 containing piezoelectric energy harvesters reported thus far, thus having great potential applications in the piezoelectric field, e.g. piezoelectric road.

Hetero-phase dendritic elemental phosphorus for visible light photocatalytic hydrogen generation

We demonstrate a carefully tailored elemental red phosphorus (red P) for a record-high photocatalytic hydrogen evolution rate of 1280 μmol g−1 h−1. This performance has even surpassed some of the established compound photocatalysts. Systematic studies reveal that the bismuth-catalyzed selective growth of the preferential crystal phases of red P leads to the formation of fibrous and Hittorf’s phases at distinctive sites within the same photocatalyst particle of dendritic morphology: nanobranches of fibrous phase and main stems of Hittorf’s phase. As each crystal phase possesses unique band energy potential, the intimate heterojunction between the two phases affords an effective built-in driving force for the efficient transportation of photoexcited charge carriers with suppressed charge trapping and recombination. The strategy in crystal phase engineering of red P as well as the understanding of its charge transportation properties in this work provides new insights into developing favorable elemental P-based materials for various photocatalytic applications.

Individual fibre separation in 3D fibrous materials imaged by X-ray tomography.

Modelling the physical behaviour of fibrous materials still remains a great challenge because it requires to evaluate the inner structure of the different phases at the phase scale (fibre or matrix) and the at constituent scale (fibre). X-ray computed tomography (CT) imaging can help to characterize and to model these structures, since it allows separating the phases, based on the grey level of CT scans. However, once the fibrous phase has been isolated, automatically separating the fibres from each other is still very challenging. This work aims at proposing a method which allows separating the fibres and localizing the fibre-fibre contacts for various fibres geometries, that is: straight or woven fibres, with circular or non-circular cross sections, in a way that is independent of the fibres orientations. This method uses the local orientation of the structure formed by the fibrous phase and then introduces the misorientation angle. The threshold of this angle is the only parameter required to separate the fibres. This paper investigates the efficiency of the proposed algorithm in various conditions, for instance by changing the image resolution or the fibre tortuosity on synthetic images. Finally, the proposed algorithm is applied to real images or samples made up of synthetic solidfibres.

Electrospun nanofibrous scaffolds of polycaprolactone containing binary ions of Pd/vanadate doped hydroxyapatite for biomedical applications

In this work, manipulation of scaffold compositions is executed, aiming to the enhancement of wound healing via the acceleration of the curing process and inhibition of bacterial growth. The study includes powder phase, palladium/vanadate hydroxyapatite (Pd/V-HAP), and fibrous phase (Pd/V-HAP@PCL) preparation in different Pd(II) ions contents. The structural inspection with palladium insertion is inspected for powder and nanofibrous compositions using XRD, while the morphological behavior was examined by the FESEM technique. The porous structure is detected clearly in the highest palladium composition in powder phase compositions, besides a significant reduction in fiber filament diameter from 4 μm to 1.5 μm. The roughness average of 0.8Pd/V-HAP@PCL shows detectable growing with palladium insertion reaching 23.6 and 103.7 nm for powder and fibrous phase, respectively. The narrowest contact angle is introduced by 0.8Pd/V-HAP@PCL scaffold with 88±3°, while it presented the highest cell viability with 95.1 ± 2%. Additionally, the 0.8Pd/V-HAP@PCL nanofibrous composite shows the maximum inhibition zones with 19.6 ± 0.8 and 18.7 ± 0.9 mm against E. coli and S. aureus microorganisms, respectively. It could be added that the cellular growth of fibroblasts cell line was observed via scanning microscope, where the spreading and the proliferation of cells increased upon the change of the compositions of nanofibers. The enlargement of the growing area of cells through the scaffold's surface might indicate the ability of these biomaterials for wound care potential applications.

Zirconium-bearing accessory minerals in UK Paleogene granites: textural, compositional, and paragenetic relationships

Abstract. The mineral occurrences, parageneses, textures, and compositions of Zr-bearing accessory minerals in a suite of UK Paleogene granites from Scotland and Northern Ireland are described. Baddeleyite, zirconolite, and zircon, in that sequence, formed in hornblende + biotite granites (type 1) and hedenbergite–fayalite granites (type 2). The peralkaline microgranite (type 3) of Ailsa Craig contains zircon, dalyite, a eudialyte-group mineral, a fibrous phase which is possibly lemoynite, and Zr-bearing aegirine. Hydrothermal zircon is also present in all three granite types and documents the transition from a silicate-melt environment to an incompatible element-rich aqueous-dominated fluid. No textures indicative of inherited zircon were observed. The minerals crystallized in stages from magmatic through late-magmatic to hydrothermal. The zirconolite and eudialyte-group mineral are notably Y+REE-rich (REE signifies rare earth element). The crystallization sequence of the minerals may have been related to the activities of Si and Ca, to melt peralkalinity, and to local disequilibrium.

Chlorinated unfused acceptor enabling 13.57% efficiency and 73.39% fill factor organic solar cells via fine-tuning alkoxyl chains on benzene core

Fluorinated noncovalently fused-ring electron acceptors (NFREAs) are more commonly exploited in high-performing organic solar cells (OSCs) than chemically cheaper chlorinated ones. Herein, by modulating central side chains on 2-(4-(thiophen-2-yl)phenyl)-dithieno[3,2-b:2′,3′-d]pyrrole (DBT) asymmetric core, three novel chlorinated NFREAs are synthesized within 4 steps. All three acceptors exhibit similar energy levels and narrow optical band gap (Egopt) below 1.40 eV. The 2-hexyldecyl substituted DBT-HD blends better with PBDB-T for fibrous phase separation and excellent π-π packing, contributing to more efficient exciton dissociation, higher and more balanced charge transport, and lower charge recombination in OSCs. As a result, the champion power conversion efficiency (PCE) of 13.57% and fill factor (FF) of 73.39% are achieved for PBDB-T:DBT-HD based devices, among the highest values for NFREAs based binary OSCs in the literature. The Eloss values of all three devices are found to be as low as 0.52–0.53 eV. Our work manifests that central side chain engineering may be an effective strategy in chlorinated NFREAs for satisfactory device performance, and the DBT core has great potential to explore cost-effective NFREAs.

Preparation and Characterization of Nanofibrous Scaffolds of Ag/Vanadate Hydroxyapatite Encapsulated into Polycaprolactone: Morphology, Mechanical, and In Vitro Cells Adhesion.

Series of nanofibrous composites of polycaprolactone (PCL) were fabricated in different compositions of modified hydroxyapatite (HAP). The encapsulated HAP was co-doped with Ag/vanadate ions at different Ag contributions. XRD and FTIR techniques confirmed the powder and fibrous phase formation. Further, the morphological and mechanical behaviors of the electrospun nanofibrous scaffolds containing hydroxyapatite were investigated. The nanofibrous phases were biologically evaluated via studying contact angle, antibacterial, cell viability, and in vitro growth of human fibroblasts cell line (HFB4). It is obvious that silver ions cause gradual deviation in powder grains from wafer-like to cloudy grains. The maximum height of the roughness (Rt) ranged from 902.0 to 956.9 nm, while the valley depth of the roughness (Rv) ranged from 308.3 to 442.8 nm, for the lowest and the highest additional Ag ions for powdered phases. Moreover, the highest contribution of silver through the nanofibrous phases leads to the formation of lowest filaments size ranged from 0.07 to 0.53 µm. Further, the fracture strength was increased exponentially from 2.51 ± 0.35 MPa at zero concentration of silver ions up to 4.23 ± 0.64 MPa at 0.6 Ag/V-HAP@PCL. The fibrous phases were biologically evaluated in terms of antibacterial, cell viability, and in vitro growth of human fibroblasts cell line (HFB4). The nanofibrous composition of 0.8 Ag/V-HAP@PCL reached the maximum potential against E. coli and S. aureus and recorded 20.3 ± 1.1 and 19.8 ± 1.2 mm, respectively. This significant performance of the antibacterial activity and cell viability of co-doped HAP distributed through PCL could recommend these compositions for more research in biological applications, including wound healing.