Fiber Materials Research Articles

The rise of intelligent fabric agent from mass-produced advanced fiber materials

The rise of intelligent fabric agent from mass-produced advanced fiber materials

Incorporation of Jute Fiber in Concrete: A Literature Review

Abstract: This systematic literature review delves into the incorporation of jute fiber as a reinforcement material in concrete, examining its benefits, challenges, and potential applications. Jute fiber, a natural and biodegradable material, presents an eco-friendly and cost-effective alternative to synthetic fibers commonly used in concrete reinforcement. The utilization of jute fibers in concrete not only enhances its mechanical properties but also promotes sustainable construction practices, addressing the growing need for environmentally responsible building materials. The review synthesizes existing research on the physical, mechanical, and durability properties of jute fiber-reinforced concrete (JFRC). It explores how the unique characteristics of jute fibers, such as their high tensile strength and low density, contribute to improved concrete performance, particularly in terms of tensile and flexural strength. The addition of jute fibers helps mitigate crack propagation and enhances the ductility of concrete, making it more resilient to dynamic loads. Despite these benefits, challenges such as the hydrophilic nature of jute fibers, which can lead to increased water absorption and potential durability issues, are also addressed. Various chemical treatments and surface modifications have been explored to improve the compatibility of jute fibers with the cement matrix and enhance the overall durability of JFRC

Dynamical Adsorption Behavior Prediction of Dried Tobacco Leaf Heterogeneous Interfaces through Simulation and Image Recognition Techniques.

The process of spraying water and flavorings on dry tobacco is an important factor in the industrial environment and product quality. Tobacco as a complex porous fiber material, the interfacial transfer process of water is complex. In this study, machine learning and image recognition techniques were utilized to quickly obtain the structural parameters of the tobacco surface and construct a cellular structure model of the tobacco surface. In situ observation of the droplet impact spreading process was carried out using a high-speed camera to explore the droplet dissipation dynamics on different surfaces. And the competing processes of droplet wetting and evaporation under the influence of surface microstructure were determined by combining experimental studies and finite element simulation calculations. Based on the characteristics of tobacco pore size distribution, the infiltration under gas-liquid two-phase action was transformed into single-phase flow transfer under capillary force, and the continuous droplet infiltration process was simulated. A parallel artificial membrane permeability measurement method of bionic tobacco waxy layer was constructed for the screening of spray dosing copenetrant. This study brings new insights into the wetting of porous fibrous materials and is important for exploring the wetting process and additive development process influenced by the microstructure.

Wet Spinning/UV Dual-Curing enabled 3D printable fiber for intelligent electronic devices

Conductive fibers are widely used in wearable sensors and implantable devices in real life due to their excellent properties of softness and lightweight. However, most conductive fibers obtained through the simple blending of polymer elastomers and inorganic conductive particles often leads to issues such as uneven conductor distribution and poor mechanical performance. Herein, the composite fiber consists of deep eutectic solvents (composed of choline chloride and 2-hydroxyethyl methacrylate) and thermoplastic polyurethane was prepared by wet spinning/ ultraviolet dual-curing method. The uniform distribution of deep eutectic solvents and the resilience of thermoplastic polyurethane ensure that the fiber material can maintain stable signal monitoring capability when subject to various strains over the long term. The composite fiber as motion sensor with an ultra-wide operating range (0–710 %), fast response time (186 ms), long lifetime (stable after 5 months), wide temperature range and excellent weather resistance. It is worth mention that the dual curing process combined with 3D printing technology, allows for the fabrication of flexible sensors in a variety of shapes. 3D printing sensors can be produced underwater to achieve different sensitivities, enabling customization to meet the requirements of applications. This innovative study holds tremendous potential for the next generation of flexible electronic products, such as human motion monitoring and information transmission.

Microbial production of 1, 3-propanediol: a transition of feedstocks from C6 to C3 and C1 carbon sources

1, 3-propanediol (1, 3-PDO) is an important diol with wide applications in the pharmaceutical, food, and cosmetics industries. In addition, 1, 3-PDO serves as a crucial monomer in the synthesis of polytrimethylene terephthalate, an important synthetic fiber material. Microbial conversion of renewable resources such as glucose into 1, 3-PDO has been industrialized due to its environmentally friendly, energy-efficient, safe, and sustainable characteristics. It serves as a successful case in the design and application of microbial cell factories for biochemicals. However, concerns such as food scarcity and climate change are driving the exploration of non-food, low-cost, and sustainable alternatives as biomanufacturing feedstocks. The biosynthesis of 1, 3-PDO from the C3 feedstock glycerol by microorganisms has been well studied. In recent years, increasing attention has been paid to the synthesis of 1, 3-PDO from C1 feedstocks such as methanol, which has higher energy density than glucose and glycerol. Several new artificial biosynthetic pathways have been proposed and validated, laying a foundation for the sustainable bioproduction of 1, 3-PDO. This article reviews the feedstock transition from C6 to C3 and C1 carbon sources for the microbial synthesis of 1, 3-PDO and discusses the strategies for reprogramming metabolic pathway to enhance 1, 3-PDO biosynthesis from different feedstocks. Finally, the development prospects of 1, 3-PDO bioproduction from C1 feedstocks are forecasted.

Enhanced multifunctional sensing in human motion with speed-controlled coaxial wet-spun hollow MWCNT-TPU/TPU smart fibers

In the field of personal health management and athletic performance optimization, the demand for multi-parameter human signal monitoring devices is rapidly increasing. Currently, flexible sensors produced through wet spinning techniques face challenges of simplistic structure and functionality, as well as difficulty in balancing strength and sensitivity. In-depth research is needed to develop high-performance wet spinning techniques, which will lay the foundation for commercial smart garments capable of unobtrusively monitoring human motion in the future. This study innovatively employs specialized slurry formulations and spinning speed controls to utilize the timing differences in fiber precipitation and the affinity among similar materials. Through the coaxial wet spinning process, it enables the continuous, large-scale manufacturing of hollow core–shell fibers, MT/T-S5, which feature a dense inner layer and a porous outer conductive layer. This special structure endows the fibers with high strength, high signal stability, and capabilities for both active and passive heating. These fibers achieve a maximum gauge factor (GF) 65.2 in stretch sensing applications and can detect pressures as low as 0.1 N. The MT/T-S5 smart fibers can sense human joint movements, and through connection with an Arduino microcontroller, they can control a robotic hand and perform independent and real-time motion detection of five fingers to distinguish gestures. This research not only provides a new type of fiber material for the development of future smart textiles but also reveals a formation mechanism for hollow core–shell fibers in the field of wet spinning. This discovery can offer valuable inspiration for fiber structural design in future research.

Diagnosis of avian salmonellosis using PCR kits of different manufacturers

Relevance. The problem in timely detection of this infection is that poultry contaminated with salmonellae may not show clinical signs of the disease. Polymerase chain reaction in the diagnosis of avian salmonellosis is designed for direct detection and identification of pathogenic agents, especially in cases where their detection is difficult by other diagnostic methods. Advantages of PCR tests allow to successfully use this method in veterinary laboratory practice. The aim of this work is to conduct comparative tests of diagnostic PCR kits of different manufacturers in the diagnosis of avian salmonellosis.Methods. To conduct comparative studies of pathological material for the presence of the DNA of Salmonella spp., Salmonella enteritidis and Salmonella typhimurium by molecular biological method, three commercial kits of domestic and imported production for isolation and detection of Salmonella DNA by PCR were used. Determination of the possibility of using membrane glass fiber materials, in the form of cards for taking dry samples of pathogenic material, for subsequent PCR was carried out in comparative tests with parallel studies of biomaterial delivered to the laboratory in frozen form.Results. Comparative studies of pathological material for the presence of Salmonella spp. DNA using three commercial kits for the isolation and detection of Salmonella DNA by polymerase chain reaction, imported and domestic production were carried out. It was found that when comparing the results obtained using kits of different manufacturers for the presence of Salmonella spp. DNA, comparable results were observed. The study was performed within the framework of the state assignment No. FGUG-2022-0009 of (FSC VIEV).

Experimental Characterization of Stiffness of a Polyester Mooring Rope for a CFPSO

Synthetic ropes are increasingly favored for use in offshore systems. Accurate predictions of the coupled hydrodynamic performance and structural response of offshore structures depends on a thorough understanding of the nonlinear characteristics of fiber materials. The objective of this study is to experimentally characterize the stiffness of a polyester mooring rope for a cylindrical floating production storage and offloading system. The quasi-static stiffness of the ropes and aged ropes after installation and the dynamic stiffness in various loading conditions were computed based on sub-rope tests following the guidelines from the American Bureau of Shipping. The quasi-static stiffness curves exhibited a linear decrease in values as the logarithm of the loading period (in minutes) increased. The dynamic stiffness was, in general, much higher than the quasi-static stiffness. The dynamic stiffness under various loading conditions revealed the complexities of the mechanical properties of polyester rope. Parameters such as the mean load, load amplitude, loading period, and loading cycles all had a notable impact. More tests are required to have a better understanding of their effects.

Characterization of Fracture Toughness Properties of Coir Fibre Reinforced Polypropylene Composites

This study investigates the production and assessment of fracture toughness in Polypropylene (PP) composites reinforced with different weight fractions of treated and untreated coconut coir fibres. The potential of natural fibres, especially those obtained from agricultural waste like coconut coir, to create lightweight, affordable, and environmentally friendly composite materials has drawn attention. In the study, coir fibres were cleaned and chemically treated with NaOH before being incorporated into PP using injection moulding and extrusion techniques. According to ASTM guidelines, composites with 10%, 20%, and 30% coir fibre concentrations underwent Single Edge Notched Bend (SENB) testing to determine their fracture toughness. The fracture toughness of composites containing 10% and 20% untreated coir fibres was found to be higher than that of pure PP, but composites containing 30% untreated and all treated coir fibres showed reduced fracture toughness. The best composite, with 20% untreated coir, showed the best mix of fibre content and material performance, emphasizing how chemical treatment hurt fibre brittleness and the composites' overall ability to support loads. The potential of untreated natural fibres to improve composite materials for industrial applications- particularly in the automotive industry- is highlighted by this study.

All-Metal Flexible Fiber by Continuously Assembling Nanowires for High Electrical Conductivity.

Fiber electronics booms as a new important field but is currently limited by the challenge of finding both highly flexible and conductive fiber electrodes. Here, all-metal fibers based on nanowires are discovered. Silver nanowires are continuously assembled into robust fibers by salt-induced aggregation and then firmly stabilized by plasmonic welding. The nanowire network structures provide them both high flexibility with moduli at the level of MPa and conductivities up to 106 S m-1. They also show excellent electrochemical properties such as low impedance and high electrochemically active surface area. Their stable chronic single-neuron recording is further demonstrated with good biocompatibility in vivo. These new fiber materials may provide more opportunities for the future development of fiber electronics.

Experimental study on the performance of various porous water-absorbing fiber materials for indoor humidification

To increase the relative humidity in heating rooms in winter, a new humidification method is proposed. The capillary water absorption performance of porous fiber materials is utilized to compose a bottom water-absorbing component, and the spray device of the traditional direct evaporative cooling system is eliminated, which can be used for miniaturized heating humidification devices. To compare the heating and humidification performance of various fiber materials, an experimental system was designed and constructed with fiber materials arranged in parallel as humidification components. The experimental materials include nonwoven fabric (Sample A), polyester fiber (Sample B) and fiber cotton (Sample C). The experimentally obtained temperature drop is lower than the conventional evaporative cooling system, and the relative humidity enhancement is between 6 % and 15 %. Sample B had a maximum temperature drop of 6.83 °C, a maximum relative humidity increment of 14.07 %, a maximum humidification capacity of 272.4 g/h, and a maximum humidification capacity per unit area of material of 972.86 g/(m2·h). The maximum humidification capacity of Sample B was 13.8 % higher than that of Sample A and 18.5 % higher than that of Sample C. The cooling energy density of the three samples was only within 330 J/m3 under all working conditions. Applying sample B to the fan coil unit increased the relative humidity by 33.8 % with only 0.3 °C temperature drop, providing humidification while heating the indoor air. This paper provides a theoretical basis for a fiber material humidification, which to some extent can meet the heating and humidification integration in winter.

Development of a novel characterization model for innovative bionic helical carbon fiber tows

The design of bionic helical structures significantly enhances load-bearing capacity and impact resistance, demonstrating great potential for mechanical property improvement. However, there is still a lack of precise characterization models for the helical structures of carbon fibers, which constrains their potential in engineering applications. This paper successfully fabricated helical carbon fiber tows using a carbon fiber twisting technique and introduced a novel intersecting circular cross-section model to thoroughly investigate the influence of the helical structure on the mechanical properties of carbon fiber tows. Tensile test results show that at a twist angle of 5°, the helical structure increases the tensile strength and fracture toughness of carbon fiber tows by 13.6% and 34.3%, respectively. Additionally, the introduction of complex structures such as helices significantly influences the material’s modulus, and precise modulus prediction is crucial for material optimization and practical application. Based on the newly proposed model, a modulus prediction model is developed, demonstrating higher predictive accuracy than traditional models with a prediction error of 2.8%. Finite element simulations further validate the practicality and superiority of the intersecting circular cross-section model. Compared to traditional models, the predictions of the novel model are closer to experimental data, with a prediction error below 2%, emphasizing the significant impact of microstructures on macroscopic properties and offering a new perspective for modeling complex material systems. These findings provide crucial theoretical and methodological support for the design and performance optimization of carbon fiber materials.

Scientific analysis of folk contract documents from Tianshui region: insights of fiber use and preservation state

Folk contract documents (FCD) are valuable materials for studying social history, and the paper they use reflects the social realities of different eras and social classes. Research and scientific analysis of numerous FCD samples after the fourteenth century are rare. We conducted a study on 96 Tianshui folk contract documents (TFCD, 107 paper samples) from the Tianshui area of Gansu Province, Northwest China, taking into account both the textual content and the materiality of paper carriers, and interpreted the results from multiple lines of evidence and discussion. Physical performance analysis revealed that the paper used by the northern folk exhibits a lower apparent density, which is not conducive to the long-term preservation of paper. The preservation status investigation, curtain pattern analysis, and fiber analysis show that the paper used in the TFCD differs from traditional cultural paper regarding disease types, production precision, and fiber materials, providing a basis for its protection and restoration. The analysis of chemical components indicated that the aging and yellowing of paper can be correlated with the content of sulfur and carbonyl groups. The feasibility of using pyrolysis gas chromatography-mass spectrometry (Py-GC/MS) analysis to quickly identify papermaking fibers in a large number of paper samples was proposed. By utilizing various techniques to inspect the paper of documents, this study helps to enhance the academic understanding of FCD materials. In addition, it expands the knowledge base of Northwest handmade paper.

Comparison of the dynamic characteristics of GFRP, CFRP, and hybrid composites subjected to repeated low‐velocity impact

AbstractThe current study used the vacuum‐assisted hand lay‐up method (VAHLM) to manufacture glass fiber‐reinforced polymer (GFRP), carbon fiber‐reinforced polymer (CFRP), and glass/carbon fiber‐reinforced hybrid composites to examine the influences of fiber materials and hybridization on the repeated low‐velocity impact (LVI) responses. In this regard, the manufactured composites were exposed to repeated LVI loading at 3 m/s under 25.2 J impact energy, and thus dynamic characteristics such as total impulse, contact/bending stiffness, interaction time, peak force/displacement, and absorbed‐rebounded energies depending on the impact number were acquired. LVI tests were continued until penetration was observed in the composites, at which point the penetration threshold numbers for each composite type were acquired. Furthermore, the macro‐scale damage analyses depending on the impact number were gradually examined, and the impacts of hybridization and fiber material on the damage mechanisms were determined. The study found that GFRP, hybrid and CFRP composites had the highest impact resistance, respectively, and that glass fiber‐reinforcement is well‐suited for applications that require higher impact resistance. When the average penetration threshold numbers for the composites were examined, it was observed that GFRP composites had approximately five times higher penetration threshold numbers than CFRP composites and that hybrid specimens exhibited similar properties to CFRP composites in terms of impact resistance. This scenario was linked to the various deformation capabilities of glass and carbon fibers, and it was concluded that the high‐deformation capability of the fibers improved the penetration threshold numbers.Highlights Effects of hybridization and fiber material on LVI responses were examined. Fiber material has a significant influence on impact resistance. Penetration threshold number can be associated with the fibers' strain capability. The adhesion factor plays an active role in the damage of hybrid specimens.

(Invited) Novel Brush Design for Post CMP Cleans

Chemical Mechanical Polishing (CMP) process is one of the key processes in semiconductor wafer processing. A sub 10nm wafer fabrication process may require more than 40 dielectric and metal CMP steps. As CMP process requirements get more stringent, CMP slurries are formulated with smaller and smaller metal oxide abrasive particles. The abrasive particles may also be surface modified or doped with other metal oxides. Post CMP cleaning chemistry formulations are designed to remove polish byproducts, pad residues and abrasive particles from wafer surface. Chemical composition and PH are tuned for modulating wafer surface-particle interactions so brushes can mechanically “sweep” them off the surface. PVA brushes, used of post CMP cleans, are a highly porous network of crosslinked polyvinyl acetate with pore size in the range of 30 – 100 um and 80% - 90% porosity, depending on the type of brush being used. While PVA brushes have largely met the process capability requirements, they have limitations for advanced cleans such as nano-particle removal. As CMP process continues to expand to new dielectric and metal films for different process steps in wafer fabrication, there is a need for customized brush material and surface design for optimal cleaning efficiency.We discuss a new engineered post CMP brush design that shows high efficiency in nano-particle cleans and allows high level of material tunability. New brush design is an engineered composite with an open cell microporous core, overlaid with engineered fibers in form of loops. Brush design is compatible with existing post CMP cleans. Figure 1(a) shows the new design, where in DIW enters the brush through the center of microporous core and flows outwards to the surface. As water exits the surface, it flows over and across the loops and contacts the wafer surface. Flow resistance through core and loops can be independently tuned, which allows better fluid distribution and more effective cleans. Figure 1(b) show a close-up schematic of interaction between loop and particle. Flexing of the loops on brush surface provides improved contact as well as cleaning ability Brush design can be optimized for chemical and mechanical properties with choice of fiber material, fiber diameter and loop height. Figure 2 shows the Zeta potential of PVA and different loop materials. The fiber material maybe selected such that zeta potential of the loops can enhance mechanical action in removing particle. Mechanical action of the Loops can be modeled as a cantilever and force on the particle is exerted by flexing of the loops.Deflection of loops can be approximated with flexure stiffness of rods with point load at free end. For initial purposed loop is approximated as single element. The equation can be rewritten to calculate cleaning force P at the free end for given loop deflection (Y), P = 3EIY/L3 (1)Where E is elastic modulus, I = moment, L = length of fiber and for rod shapes; I = Pi*(r4/4)The adhesion of particles on the surface is due to the effect of van der Waals and electrostatic forces. The total adhesion force on the surface can be written as: F=F vdw + F edl (2) where Ft is total adhesion force, Fvdw is the van der Waals force, and Fedl is the electrostatic force.Fvdw = AR/6r2 (3)Where A is the Hamaker constant, R is particle radius, r is the separation distanceFor effective removal of particles, P >/= F (4)Flex force and adhesion force were modeled based on equation (1) and (3) and are shown in Figure 3. New brush design was used for post CMP cleaning of silicon dioxide wafers polished with ceria slurry. Two different brush designs were tested for cleaning efficiency. Modeling data and comparison with experimental results is presented. Figure 1

Investigation on the flexural behavior of high‐strength fiber‐reinforced concrete

AbstractThe present research investigated the flexural behavior of high‐strength fiber‐reinforced concrete (HSFRC) with six different types of fiber: hooked‐end and crimped steel fibers, chopped and pultruded glass fibers; monofilament and twisted polymeric fibers. An extensive experimental program with 108 specimens for 3‐point bending tests was carried out and the parameters analyzed were the fiber content (0.50%, 0.75% and 1.00% in volume), the fiber type and the compressive strength of the concrete (60 and 90 MPa). Statistical analyses were performed and showed that regardless of the fiber material, increasing the amount of fibers added to concrete increases residual strength and toughness. Limit of proportionality is not affected by the addition of fibers, while postcracking behavior, on the other hand, is controlled by the fibers. Increasing the compressive strength of the concrete matrix affect mainly the limit proportionality of all mixes and the postcracking behavior of the concrete reinforced with hooked‐end steel fibers. The classification of HSFRC and the conditions required for HSFRC for use in structural applications according to the fib Model Code 2010 were also discussed, and it was verified that such conditions are not consistent with the experimental results and should be revised for high‐strength fiber‐reinforced concrete.

Toward durable polylactic acid/poly(methyl methacrylate) polyblend fibers with high performance

AbstractPolylactic acid/poly(methyl methacrylate) (PLA/PMMA) composite fibers with high performance were fabricated using melt spinning technique. The crystallization, lamellae orientation and physical properties of composite fibers were investigated systematically. The addition of PMMA (0–20 wt%) has improved the hydrolysis resistance of composite fibers by preventing water molecules from penetrating and diffusing through the fibers, but the strength and heat resistance were reduced at the same time. The stereocomplex crystallites (SC) formed before spinning by introducing poly(D‐lactide) (PDLA) (3 wt%) in poly(L‐lactide) (PLLA) matrix and acted as nucleating agents to enhanced the crystallization and lamellae orientation of PLLA matrix, which improved the physical properties of PLA composite fibers resultful. The tensile strength of PLA fibers with 3 wt% PDLA and 5 wt% PMMA was increased 31% as well as the boiling water shrinkage and the hydrolysis rate were decreased 30% and 33% in relation to PLLA fibers. Finally, the hydrolysis resistance was further enhanced on the basis of realizing high strength and heat resistance, which is of great significance for preparing durable PLA fiber materials and expanding their application.

Pre-clinical evaluation of advanced nerve guide conduits using a novel 3D in vitro testing model.

Autografts are the current gold standard for large peripheral nerve defects in clinics despite the frequently occurring side effects like donor site morbidity. Hollow nerve guidance conduits (NGC) are proposed alternatives to autografts, but failed to bridge gaps exceeding 3 cm in humans. Internal NGC guidance cues like microfibres are believed to enhance hollow NGCs by giving additional physical support for directed regeneration of Schwann cells and axons. In this study, we report a new 3D in vitro model that allows the evaluation of different intraluminal fibre scaffolds inside a complete NGC. The performance of electrospun polycaprolactone (PCL) microfibres inside 5 mm long polyethylene glycol (PEG) conduits were investigated in neuronal cell and dorsal root ganglion (DRG) cultures in vitro. Z-stack confocal microscopy revealed the aligned orientation of neuronal cells along the fibres throughout the whole NGC length and depth. The number of living cells in the centre of the scaffold was not significantly different to the tissue culture plastic (TCP) control. For ex vivo analysis, DRGs were placed on top of fibre-filled NGCs to simulate the proximal nerve stump. In 21 days of culture, Schwann cells and axons infiltrated the conduits along the microfibres with 2.2 ± 0.37 mm and 2.1 ± 0.33 mm, respectively. We conclude that this in vitro model can help define internal NGC scaffolds in the future by comparing different fibre materials, composites and dimensions in one setup prior to animal testing.

Kilogram-scale production of strong and smart cellulosic fibers featuring unidirectional fibril alignment

ABSTRACT Multifunctional fibers with high mechanical strength enable advanced applications of smart textiles, robotics, and biomedicine. Herein, we reported a one-step degumming method to fabricate strong, stiff, and humidity-responsive smart cellulosic fibers from abundant natural grass. The facile process involves partially removing lignin and hemicellulose functioning as glue in grass, which leads to the separation of vessels, parenchymal cells, and cellulosic fibers, where cellulosic fibers are manufactured at kilogram scale. The resulting fibers show dense and unidirectional fibril structure at both micro- and nano-scales, which demonstrate high tensile strength of ∼0.9 GPa and Young's modulus of 72 GPa, being 13- and 14-times higher than original grass. Inspired by stretchable plant tendrils, we developed a humidity-responsive actuator by engineering cellulosic fibers into the spring-like structures, presenting superior response rate and lifting capability. These strong and smart cellulosic fibers can be manufactured at large scale with low cost, representing promising a fiber material derived from renewable and sustainable biomass.

Metal-organic framework incorporated polybenzimidazole aerogel fibers with dual protections for thermal hazards and chemical warfare agents

Aerogel fibers possess the flexibility of fiber materials and the high porosity and low thermal conductivity of aerogel materials, which hold great promising for applications in thermal insulation and personal protection. However, the inferior mechanical performance and the lack of functionality have impeded the wider applications of these fascinating materials. Herein, we report a novel kind of MOF/polybenzimidazole composite aerogel fibers (CAFs) with both physical and chemical protection functions. The CAFs are fabricated by an oxidation induced sol–gel transition spinning method that utilized the transition of labile imidazole/Co2+ coordination bonds to stable imidazole/Co3+ coordination bonds upon oxidation. The incorporation of MOF has obviously improved the strength and ductility of CAFs due to the good interfacial interactions with matrix and increased crosslinking among polymer chains. The CAFs maintain the high thermal stability and flame retardancy of polybenzimidazole matrix, while the increased porosity and surface area with the addition of MOF have lowered the thermal conductivity and improved the thermal insulation performance of CAFs. The uniform porous skeleton also facilitates the access of chemical warfare agents (CWAs) to MOF inside the fiber. The catalytic experiments show that the CAFs have better degradation effect on CWAs than pure MOF powder, dense composite fiber, and MOF coated fiber. This work is expected to provide an efficient strategy for strong and multifunctional aerogel fibers.