Fiber Structure Research Articles

Simultaneous measurement of temperature and humidity using a dual-parameter sensor based on SPR and no-core fiber technology

In this article, we present a surface plasmon resonance (SPR) sensor based on a no-core fiber (NCF) structure for simultaneous measurement of temperature and humidity. The sensor is simulated by depositing a silver film on the exterior of the NCF by magnetron sputtering, followed by the application of a composite thin film of polyvinyl alcohol (PVA) and polydimethylsiloxane (PDMS). This configuration induces SPR resonance phenomena at two distinct wavelengths, resulting in the splitting of the resonance peak into two distinct peaks, enabling simultaneous measurement of temperature and humidity. To achieve optimal sensor performance, the thickness of the PDMS-PVA composite film, the proportion of sensitive materials, the thickness of the silver film, and the structural parameters of the fiber were optimized. Simulation results show that the sensor exhibits a humidity sensitivity of 8.60 nm/%RH over a relative humidity (RH) range of 50%–100%. The highest temperature detection sensitivity achieved is 7.40 nm °C−1. This sensor holds great potential for applications in monitoring changes in environmental temperature and humidity.

Controllable fiberization engineering of cobalt anchored mesoporous hollow carbon spheres for positive feedback to electromagnetic wave absorption

In order to overcome the limitations of single attenuation mechanism materials in effectively absorbing electromagnetic waves (EMW), meticulous microstructural design of composites and an elevated degree of integration of wave absorbing mechanisms are crucial. Utilizing mesoporous hollow carbon spheres as precursors, PCHM@ComXn (X = Se, S, O) nano-microspheres were synthesized by anchoring cobalt nanoparticles on the surface, controllable encapsulating in continuous fiber structure by electrostatic spinning technique subsequently. The carbon shell-cavity core configuration interspersed with nanoparticles has the advantage of light weight, low density and extensive defects. Abundant heterogeneous interface in carbon fiber offers excellent electrical conductivity and high specific surface area, while a three-dimension conductive network optimizes the transmission loss to incident EMW. The efficient synergy of multiple mechanisms enables PCHM@CoSe2/CNFs to achieve a strong reflection loss of −50.55 dB at a matched thickness of 2.0 mm, while the EABmax value can be extended to a remarkable 6.80 GHz at 2.3 mm, which is considerably superior to fiber samples encapsulating other cobalt-based nanoparticles of the same family. This work provides an innovative direction for the development of high-performance EMW absorbers.

Quasi-fiber scale modeling of 3D needled composites based on the virtual fiber embedded method

The objective of this paper is to propose a fiber-level modeling method for simulating tensile fracture of 3D needled composite. The complex fiber structure of 3D needled nonwoven preform is reproduced using virtual fibers. Micro-scale model of the composite is established by embedding virtual fiber structure into the voxel meshes of matrix material. The novel stiffness correction method is developed to solve the problems of volume redundancy and loss of reinforcing effect in transverse and shearing directions of the virtual fiber embedded element. The stiffness of the virtual fiber is not changed by the stiffness correction, ensuring that the stress of the virtual fibers is accurate. Damage initiation and evolution for fiber and matrix materials are characterized by the development of damage constitutive models. The tensile behavior of 3D needled composite is simulated. Influence of modeling parameters, including virtual fiber diameter and voxel mesh density on calculation accuracy is analyzed. Experimental tests are conducted to verify the simulation results. It is indicated that the predicted stress–strain response, strength, and fracture mode all agree well with the experimental results.

The influence of NaOH/urea treatment on the transfer law of water in cotton fabric

The moisture absorption and water conductivity of fabrics determine the thermal and moisture comfort of textiles and clothing. In this study, the water transfer law in cotton fabrics treated with a NaOH/urea system was investigated. The morphological changes and structural properties of the cotton fabrics before and after treatment were analyzed using scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. Additionally, the relationship between the gaseous and liquid water transfer performance and the fiber morphology and structure was studied. The results indicate that after the NaOH/urea treatment, the surface of the cotton fibers gradually became rougher, and the fibers swelled slightly along the cross-sectional direction. With an increase in treatment time, the axial twist of the fibers decreased, and a trend of dissolution was observed. However, after 5 min of treatment, the cotton fabric tended to adhere to the partially dissolved fibers at the junction of the warp and weft yarns. Although the chemical structure of the cotton fibers did not show significant changes after the treatment, their crystallinity gradually decreased. Following treatment, the air permeability and moisture permeability of the fabric increased, while the wicking height and water retention rate initially increased and then decreased, resulting in an interesting pattern of change. The NaOH/urea treatment also increased the dyeability of the cotton fabrics, and the fastness to rubbing and washing of the fabrics reached grades ≥ 3. Prolonged NaOH/urea treatment enhanced the breaking strength of the cotton fabrics. The establishment of the entropy weight-TOPSIS method to evaluate the moisture transfer performance of fabrics treated with the NaOH/urea system has theoretical significance for the comprehensive analysis of cotton fabrics treated with NaOH/urea and related product development. This study provides a new basis for the comprehensive analysis and evaluation of the water transfer and moisture comfort performance of the fabrics, further advancing the application of NaOH/urea treatment to cotton fabrics, which has promising prospects for the future.

A new bi-directional surface modification cathode based on conventional cathode La0.6Sr0.4Co0.2Fe0.8O3-δ

The commercialization of proton solid oxide fuel cells (H-SOFCs) is hindered by the lack of high active and durable cathode materials exposed to evil operation conditions. Here, this groundbreaking study addresses two critical challenges impeding the practicality of La0.6Sr0·4Co0·2Fe0·8O3-δ (LSCF), one of the most popular proton-conducting cathode materials contemporarily: inadequate temperature activity and durability issues stemming from surface Sr segregation. The research introduces a transformative solution through the creation of a novel nanofiber cathode, denoted as PrBaCo1.4Fe0·6O6-δ@LSCF, comprising a nanoscale LSCF FP host and PBCF NP guest. Advanced electron microscopy and scanning electron microscopy techniques confirm the seamless integration of the two phases, highlighting a distinctive fiber structure adorned with impregnated nanoparticles. Meanwhile, efficiently reducing oxygen vacancies within the LSCF bulk phase significantly suppresses Sr segregation. Systematic simulations based on density functional theory reveal that the incorporation of PSCF reduces the polarization energy barrier. In practical terms, electrochemical testing of a single cell supported by PBCF@LSCF shows a polarization resistance of only 0.053 Ω cm2 at 700 °C, translating to a remarkable fifty percent reduction. Furthermore, a sustained 100-h test reveals no notable decline in performance. Consequently, a novel dual modification approach is proposed for crafting cathodes tailored for SOFCs.

Differences in Type 2 Fiber Composition in the Vastus Lateralis and Gluteus Maximus of Patients with Hip Fractures.

Aging leads to sarcopenia, which is characterized by reduced muscle mass and strength. Many factors, including altered muscle protein turnover, diminished neuromuscular function, hormonal changes, systemic inflammation, and the structure and composition of muscle fibers, play a crucial role in age-related muscle decline. This study explored differences in muscle fiber types contributing to overall muscle function decline in aging, focusing on individuals with hip fractures from falls. A pilot study at Chungnam National University Hospital collected muscle biopsies from hip fracture patients aged 20 to 80 undergoing surgical treatment. Muscle biopsies from the vastus lateralis and gluteus maximus were obtained during hip arthroplasty or internal fixation. Handgrip strength, calf and thigh circumference, and bone mineral density were evaluated in individuals with hip fractures from falls. We analyzed the relationships between each clinical characteristic and muscle fiber type. In total, 26 participants (mean age 67.9 years, 69.2% male) were included in this study. The prevalence of sarcopenia was 53.8%, and that of femoral and lumbar osteoporosis was 19.2% and 11.5%, respectively. Vastus lateralis analysis revealed an age-related decrease in type IIx fibers, a higher proportion of type IIa fibers in women, and an association between handgrip strength and type IIx fibers in men. The gluteus maximus showed no significant correlations with clinical parameters. This study identified complex associations between age, sex, handgrip strength, and muscle fiber composition in hip fracture patients, offering insights crucial for targeted interventions combating age-related muscle decline and improving musculoskeletal health.

Concentric circular stress region-assisted pseudo-elliptical-ring-core polarization-maintaining few-mode fiber

In this paper, a pseudo-elliptical-ring-core polarization-maintaining few-mode fiber structure assisted by concentric circular stress-applying region is proposed. Numerical simulation results show that the structure can stably support 14 transmission modes. By introducing two elliptical stress regions with low refractive index inside the core, and a circular stress region with concentric core between the fiber core and cladding, the effective refractive index difference between higher-order modes is significantly improved. In the C + L band, the minimum refractive index difference between adjacent modes is not less than 2 × 10−4. At 1550 nm, the effective refractive index difference between the two fundamental modes reaches 4.8 × 10−4. The mode dispersions are less than |-33| ps/nm/km, and the maximum bending loss is in the order of 10−7 dB/m (bending radius ≥2.5 cm). This work may pave the way for the development of short-distance large-capacity optical fibers.

Tree-inspired coir fiber-based array evaporator with rapid water transportation and effective solar water evaporation

Coconut husk as a raw material for the production of solar water evaporators has received considerable attention due to its abundance and availability. However, common treatment methods such as carbonization applied to capacitate the coconut husks for photothermal conversion were not favor for realizing rapid evaporation, as they failed to exploit the original structure of coconut husks. Herein, coir fibers extracted from the coconut husks were directly supplied to the production of functionalized evaporators with carbon nanoparticle coating, which preserved the pristine structure of coir fibers and allowed them to rapidly transport water in multiple directions like trees. These fibers were further assembled into array evaporators to maximize their exposed surface area for efficient evaporation. As a result, the carbon-coated coir fiber array evaporator prepared in the present work showed the highest evaporation rate of 4.19 kg m-2h−1 during solar water evaporation experiments under 1.0 sun illumination. Our work presents an approach for achieving effective solar water evaporation based on carbon-coated coir fiber array evaporator with large exposed surface area and tree-inspired multidirectional fast water transportation.

Impact of fiber structure on the heat and mass transfer characteristics of medium density fiberboard from fractal-based microstructure reconstruction

Microwave heating can rapidly desorb residual volatile organic compounds (VOCs) such as formaldehyde in medium density fiberboard (MDF) because of its penetration and selective heating characteristics. To further understanding the desorption of formaldehyde from MDF by microwave heating, it’s essential to reveal the relationship between specific fiber structure and the heat and mass transfer characteristics of MDF. The study used scanning electron microscopy (SEM) to acquire the microstructural characteristics of MDF before and after low-temperature (350 ℃) pyrolysis treatment, including porosity and pore size distribution. A reconstruction model of MDF incorporating fractal theory and microstructural information was developed to explore the impacts of fiber structure on the heat and mass transfer parameters. The results indicate that low-temperature pyrolysis has a minimal impact on the pore structure of MDF, the porosity increased to ∼ 45 % from ∼ 40 % after slightly pyrolysis while the average pore diameter is maintained at 7 μm, thus the changes in structure can be disregarded when studying microwave-induced desorption of VOCs in MDF. Further analysis combined with fractal reconstructed structure shows that the inherent fiber organization in MDF introduces anisotropy to the mass transfer parameters, resulting in approximately ∼ 10 % higher mass transfer capability perpendicular to the thickness direction compared to that along the thickness direction. However, the heat transfer parameters of MDF are not significantly affected by the fibre structure, which indicates its isotropy. This study provides a theoretical basis for future research on microwave-induced desorption of VOCs in MDF by offering insights into heat and mass transfer theory.

A microscale modeling method for predicting the compressive behavior of 3D needled nonwoven fiber preforms

The through-thickness compressive mechanism of 3D needled nonwoven fiber preforms is complicated due to the complex fiber structure and enormous fiber-to-fiber contacts. This work developed a microscale modeling method to predict compressive behavior of carbon fiber nonwoven preforms. A newly-developed virtual fiber is proposed based on the generalized beam elements, for which the low bending stiffness of the fiber is calibrated by experimental data and decoupled from the high tensile stiffness. The feasibility of the proposed virtual fiber method is demonstrated through a simulation example of three-point bending of 6 k carbon fiber yarn. Influence of modeling parameters including amount of virtual fibers in the yarn and the element length of virtual fibers on the simulations is analyzed. High precision model of 3D needled preform is then generated using the proposed virtual fiber method. Through-thickness and axial compressive deformations of the preform are simulated. The predicted load–displacement curves agreed well with the experimental results.

Investigation of photothermal effects and mechanisms underlying collagen denaturation in laser-assisted skin anastomosis

Based on the thermal damage concept, our work proposes the concept and calculation method of collagen denaturation degree. By integrating experimental calculations with GROMACS molecular dynamics simulation and finite element COMSOL numerical simulation of skin optical properties, we investigate the mechanisms underlying collagen fiber thermal denaturation and photochemical changes induced by laser irradiation. When the energy is below 115.68 J/mm2, the dominant factor in skin wound repair is the thermal energy delivered by the laser. The collagen denaturation degree can be maintained around 0.0199 during an effective laser welding time of 300 s, resulting in a peak temperature of approximately 55℃ and noticeable wrinkling and scattering of monomeric helical protein chains within the fiber structure. This wrinkled structure indicates macroscopic recombination and recoupling of fractured collagen fibers on both sides of the skin wound. However, when the laser energy density further increases to 135.4 J/mm2, there is only a slight increase in collagen denaturation degree without significant alterations observed. For this phenomenon, Finite element simulations based on Helmholtz equation modules reveal that reflectivity towards laser photons decreases significantly across tissue blocks due to enhanced photonics effects. As energy reaches or exceeds 135.4 J/mm2 levels, photothermal effects assume a more prominent role but inevitably lead to higher peak temperatures (70.4℃). Therefore, precise reduction in laser welding time within 300 s can effectively control collagen denaturation within reversible and reasonable ranges.

Harnessing oriented arrangement of collagen fibers by 3D printing for enhancing mechanical and osteogenic properties of mineralized collagen scaffolds

As the structural basis of connective and load-bearing tissues, collagen fibers with orientation play an important role in the mechanical properties and physiological and biochemical functions of the tissues, but viable methods for preparing scaffolds with highly oriented collagenous structure still need to be further studied. In this study, pure collagen was used as printing ink to 3D printing. Harnessing oriented collagen fiber structure by 3D printing for promoting mechanical and osteogenic properties of scaffolds. The scaffolds with different printed angles and thicknesses were prepared to fit the bone defect site and realize personalized customization. The orientation assembly of collagen fibers was promoted by shear force action of 3D printing, the regular arrangement of collagen fibers and stabilization of fiber structure were promoted by pH adjustment and glutaraldehyde cross-linking, and the collagen fibers were mineralized by cyclic mineralization method. The microscopic morphology of fiber arrangement in the scaffolds were investigated by scanning electron microscopy. Results demonstrated that collagen fibers were changed from non-oriented to oriented after 3D printing. And the tensile modulus of the scaffolds with oriented collagen fibers was nine times higher than that of the scaffolds with non-oriented fibers. Moreover, the effects of oriented collagen fibers on the proliferation, differentiation and mineralization of MC3T3-E1 cells were studied by CCK-8 assay, live/dead cell staining, alkaline phosphatase activity test, and Alizarin red staining. The results indicated that cell proliferation, differentiation and mineralization were significantly promoted by oriented collagen fibers, and the cells proliferated directionally in the direction of the fibers. Taken together, mineralized collagen fiber scaffolds with oriented collagen fibers have great potential in bone tissue engineering applications.

Engineering free-standing electrospun PLLCL fibers on microfluidic platform for cell alignment

Here, a PLLCL-on-chip platform was developed by direct electrospinning of poly (L-lactide-co-ε-caprolactone) (PLLCL) on polymethyl methacrylate (PMMA) microfluidic chips. Designed microchip provides the electrospinning of free-standing aligned PLLCL fibers which eliminates limitations of conventional electrospinning. Besides, aligned fiber structure favors cell alignment through contactless manipulation. Average fiber diameter, and fiber alignment was evaluated by SEM analyses, then, leakage profile of microchip was investigated. 3D cell culture studies were conducted using HeLa and NIH-3T3 cells, and nearly 85% cell viability was observed in PLLCL-on-chip for 15 days, while cell viability of 2D control started to decrease after 7 days based on Live dead and Alamar Blue analyses. These findings emphasize biocompatibility of PLLCL-on-chip platform for 3D cell culture and its ability to mimic extracellular matrix (ECM). Immunostaining results prove that PLLCL-on-chip platform favors the secretion of ECM proteins compared to control groups, and cytoskeletons of cells were in aligned orientation in PLLCL-on-chip, while they were in random orientation in control groups. Overall, these results demonstrate that the developed platform is suitable for the formation of various 3D cell culture models and a potential candidate for cell alignment studies.Graphical

Optimization design and evaluation of composited fiber optic sensors for monitoring ammonia gas with relative error calibration unit

In this paper, a relative error calibration unit has been designed to analyze and calibrate the common relative errors in optical fiber gas detection system based on directly absorption spectrum (DAS) technology. The ammonia gas was successfully encapsulated in one cut of hollow core fiber as the closed micro-cavity reference cell by dipping saturated solution and cascade-fusing fibers. Through the difference algorithm, the maximum relative error caused by the power fluctuation of the light source is reduced by 85.3 %; to reduce the temperature drift effect caused by optical fiber structure and ammonia absorbance, the calibration equation is obtained by fitting and inversion calculation. The temperature relative error decreases by 95 %. The proposed self-referencing hollow fiber gas sensing probe has a compact structure and can be used for precise monitoring of harmful gases in harsh environments such as narrow space, strong electromagnetic interference, high temperature and humidity.

Optimizing color enhancement in dried Penaeus vannamei through high-humidity hot air impingement cooking: Enzyme inactivation, reduced drying time, and Maillard reaction inhibition

This study was aimed to evaluate the potential of high-humidity hot air impingement cooking (HHAIC) on Penaeus vannamei, focusing on its drying characteristics, microstructure, water distribution, enzyme activity, astaxanthin content, antioxidant capacity, color, and Maillard reaction. Results demonstrated that a 3 min HHAIC significantly improved the shrimp's color and optimized astaxanthin content with a notable increase in scavenging capacity based on an in-vitro as antioxidation activity evaluation. Compared to the untreated samples, HHAIC could significantly inactivate polyphenol oxidase by 95.76%. Also, it suppressed the Maillard reaction by decreasing 5-hydroxymethylfurfural content and shortened the drying time by 40%. In addition, the low-field nuclear magnetic resonance and microstructure analysis showed alterations in the shrimp muscle fiber structure and water distribution. This study indicated that HHAIC could elevate quality, enhance appearance, and reduce the processing time of dried shrimp, presenting valuable implications for industry progress.

Comparative Analysis of Nickel Adsorption by Natural Sisal Fiber and Treated with Citric Acid

Introduction: Removing nickel from wastewater is complex and costly, requiring research into alternatives with technical and economic solutions. An alternative would be the use of plant biomass. In the Northeast region of Brazil, one of these alternatives, with a large cultivation area, is sisal (Agave Sisaliana), which may have greater yields for this purpose through surface chemical treatment with citric acid, which inserts carboxylic groups into the structure of the plant fiber. Thus, the objective was to analyze the ability to remove nickel in solution by sisal fibers. Methodology: For this purpose, part of the sisal fibers was cut into 0.5 cm, washed and dried; initially treated with NaOH (0.1 mol/L); washed with distilled water and treated with citric acid (1.2 mol/L). The fibers were identified by FTIR; XRD; XRF and SEM. Adsorption tests were carried out with nickel solution for the parameters: kinetics, balance, influence of pH and adsorbent mass. Results: The XRF analysis demonstrated a greater presence of NiO adhered to the treated fiber (55.74%); FTIR confirmed the presence of non-ionized carbonyl in the region from 1700 to 1750 cm-1; the adsorption kinetic test demonstrated greater effectiveness of the treated fiber > 80%; an ideal adsorbent mass was observed to be 0.1g; the ideal pH for removal was 5.0 while the equilibrium test has the best Languimuir isotherm, the uncontrolled fiber obtained R2 = 0.9810 and the controlled fiber R2 = 0.9643. Conclusion: Therefore, it was observed that the treatment of sisal fiber with citric acid increases the removal efficiency of nickel ion in aqueous solution, presenting itself as a low-cost and widely available material.

Properties of Multistranded Twisted Graphene Fibers and Their Application in Flexible Light-Emitting Devices.

As a typical carbon-based material electrode, graphene fiber exhibits many advantages, such as good electrical conductivity, lightweight, and strong structural designability. Its demand is increasing in the wearable display field. With the help of fine denier fiber spinning combined with multistranded graphene fibers prepared via twisting and drafting, their petal-like twisted structure endows the fibers with a high specific surface area, enabling them to complete dye adsorption within 30 min. Simultaneously, compared with that of a single fiber with the same thickness, the volume specific resistance of a multistranded twisted graphene fiber is reduced by 2.4 times. During force sensing, the twisted structure of multistranded fibers exhibits varying simultaneity of fiber fracture with excellent resistance sensitivity reaching up to 55%. The multistranded twisted flexible graphene fibers demonstrate excellent robustness. Electroluminescent flexible devices prepared with graphene fibers and fiber braided fabrics with different organizational structures as electrodes emit highly saturated short-wave blue light during long-term multiple use. Therefore, multistranded twisted graphene fibers exhibit considerable potential for future applications in wearable multicolor smart displays and flexible optical signal electronics.

Untargeted metabolomics revealed the mechanism of aucubin on glucocorticoid-induced osteoporosis in mice through modulating arachidonic acid metabolism

Glucocorticoid-induced osteoporosis (GIOP) represents the most prevalent form of secondary osteoporosis. Aucubin (AU), a principal active component found in traditional herbal medicines such as Eucommia ulmoides, has been demonstrated to enhance osteoblast differentiation. Nonetheless, the precise therapeutic effects of AU on GIOP and the complex underlying regulatory mechanisms warrant further investigation. We first established a GIOP model in female mice and then assessed the therapeutic effects of AU using micro-CT analysis, biomechanical testing, measurements of serum calcium (Ca) and phosphorus (P) levels, and histological analyses using Hematoxylin and Eosin (HE) and Masson staining. Subsequently, non-targeted metabolomics was employed in order to study the effects of AU on serum metabolites in GIOP mice. The levels of the factors related to these metabolites were quantified using real-time quantitative reverse transcription polymerase chain reaction (RT-qPCR) and western blot analyses. Finally, the effects of AU on osteoblastic and osteoclastic differentiation were examined. We found that AU significantly ameliorated bone microarchitecture and strength in GIOP mice. It mitigated pathological damages such as impairment of trabecular bone structure and reduction in collagen fibers, while concurrently elevating serum levels of Ca and P. Non-targeted metabolomics revealed that Arachidonic acid (AA) metabolism serves as a common pathway between the control and GIOP groups, as well as between the high-dose AU (AUH) and GIOP groups. AU notably upregulates prostaglandin-endoperoxide synthase 2 (PTGS2) and microsomal prostaglandin-E synthase 1 (PTGES) expression and downregulates prostaglandin-H2 D-isomerase (PTGDS) expression. Furthermore, AU treatment increased the expression of runt-related transcription factor 2 (Runx2) and transcription factor Sp7 (Osterix), enhanced serum alkaline phosphatase (ALP) activity, and reduced osteoclast expression. These results indicate that AU is a potential drug for treating GIOP, and its mechanism is related to regulating AA metabolism and promoting osteoblast differentiation. However, the key targets of AU in treating GIOP still need further exploration.

Influence of high hydrostatic pressure treatment on the soluble dietary fiber content and physicochemical characteristics of edamame

We used non-thermal high hydrostatic pressure (HHP) technology to process edamame to increase the soluble dietary fiber content of the product. We also comprehensively explored the impact of HHP on the functional properties and fiber structure of edamame. Edamame was treated at a high pressure of 600 MPa for 5-, 10-, and 15-min. Edamame treated with HHP exhibited elevated water-holding, oil-holding, and water-swelling capacities, which were attributed to alterations in the fiber structure. Scanning electron microscopy, used to assess the porous characteristics of the surface, revealed gaps that could retain liquid. This structural modification facilitated enhanced invitro performance in cholesterol adsorption and bile acid-binding force tests. X-ray diffraction analysis revealed that the broken fibers strengthened the (101) crystal plane of fiber crystal I; the reduction in crystallinity caused the fibers to form a loose structure under thermal stability, which increased the water retention and swelling properties. HHP destroyed part of the fiber structure, contributing to the altered functional properties. The findings indicate that HHP treatment adds significant value to edamame, making it a promising raw material for developing functional foods and healthcare products.

Effects of high-intensity ultraviolet irradiation on the structure and mechanical properties of Sisal fibers

Abstract To explore the impact of high-intensity ultraviolet light on the structure and mechanical properties of sisal fibers, the article uses chemical methods in the sisal fiber surface silver-plated, untreated, and alkali-treated sisal fibers as a comparison, with the help of scanning electron microscopy, infrared spectroscopy on the fiber surface topography, the molecular structure of the research, determination of high-intensity ultraviolet irradiation under the mechanical tensile properties of the fiber. Exposure to high-intensity ultraviolet radiation for a brief period results in a reduction in the tensile strength, fracture elongation, and elastic modulus of untreated, alkali-treated, and chemically silver-plated sisal fibers by 95.2%, 77.7%, 55.9%, 92.8%, 76.9%, 42.1%, and 89.4%, 70.2%, 34.2%, respectively.