Fibers and Polymers最新文献

{"title":"Behavior Analysis of Macro-fiber Composite (MFC) Under Curvature and Comparison with Modal Analysis Using Finite Element Model","authors":"Jae-Ha Kim,&nbsp;Joo-Yong Kim","doi":"10.1007/s12221-025-01121-w","DOIUrl":"10.1007/s12221-025-01121-w","url":null,"abstract":"<div><p>This study explores the dynamic behavior of macro-fiber composite (MFC) under varying voltage and curvature conditions, aiming to optimize its maximum displacement. We identified a direct relationship between applied voltage and displacement, with higher voltages leading to increased displacements. Concurrently, the natural frequency decreased as effective stiffness and electromechanical coupling changed. To measure maximum displacement, a novel sweep method was introduced and validated, demonstrating a low error rate and offering a reliable alternative to traditional techniques, particularly for curved or irregular structures. Further, the study revealed that curvature significantly impacts both the natural frequency and maximum displacement of MFCs. A critical curvature point was identified, where displacement behavior shifted, providing essential insights for optimizing MFC design and application. These findings contribute to a deeper understanding of MFC dynamics and open new avenues for applying the sweep method to other piezoelectric materials and complex geometries. This research sets the stage for future studies aimed at refining the sweep method for more precise and efficient use in advanced engineering applications.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4579 - 4590"},"PeriodicalIF":2.3,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FEA Modelling of Thick CFRP, GFRP, and BFRP Composite Laminates Under Charpy Impact","authors":"Dongdong Chen,&nbsp;Maozhou Meng,&nbsp;Tim Searle,&nbsp;Shoune Xiao","doi":"10.1007/s12221-025-01109-6","DOIUrl":"10.1007/s12221-025-01109-6","url":null,"abstract":"<div><p>This study explores the impact responses of thick laminated composites, including carbon fibre reinforced plastics (CFRP), glass fibre reinforced plastics (GFRP), and basalt fibre reinforced plastics (BFRP). Three layups were prepared using the resin infusion method: unidirectional (UD), cross-ply (CP), and angle-ply (AP). These were tested using the Charpy impact test taking the ASTM-E23 as reference. A two-scale finite-element (FE) model was developed to bridge the computational relationship between micro-scale characteristics (mechanical properties of fibre and matrix, fibre volume fraction, and layup) and macro-scale impact resistance. Results showed that the impact strength of composite laminates decreased in the order of UD, CP, and AP, while GFRP and BFRP laminates exhibited an approximately 42.2–78.3% and 90.7–187.7% increase in impact strength compared to CFRP. Reasons can be owed to the stiffness mismatch between adjacent composite plies, which contributed to the tensile and compressive energy absorption mechanisms in CP layups. Different materials and layups demonstrated distinct failure mechanisms, attributable to the better ductility of glass and basalt fibres. The conclusions of this study aim to deepen the understanding of damage and energy absorption mechanisms in thick composite laminates, thereby providing practical guidelines for structural design.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4559 - 4577"},"PeriodicalIF":2.3,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-Step Tannic Acid/Iron (II) Treatment for Enhanced Silk Fabric Performance","authors":"Liuji Chen,&nbsp;Jiaxin Li,&nbsp;Zhijie Liang,&nbsp;Yanhong Wei,&nbsp;Weini Jia","doi":"10.1007/s12221-025-01116-7","DOIUrl":"10.1007/s12221-025-01116-7","url":null,"abstract":"<div><p>The modification of silk fabric by complexation of tannic acid with ferrous ions (TA-Fe²⁺) and its properties were studied in this paper. The one-step process of silk fabric was optimized. The formation mechanism of tannic acid/Fe(II) complexation products and the properties and functional indexes of modified silk fabric were analyzed by particle size, ultraviolet–visible absorption spectrum (UV–Vis), Fourier infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), thermogravimetric analysis (TG) and X-ray diffraction (XRD). Concurrently, the antibacterial, antioxidant, UV-resistant, and stain-resistant properties of the one-step modified silk fabric were tested. The results of microscope, SEM, XPS, and EDS showed a single ligand 1:1 complex of TA-Fe²⁺ that was formed and attached to the structure of silk fibers under the condition of pH 3, and the water-soluble components of the product penetrated into the cross-section of the silk fibers. The XRD analysis indicates that the crystallinity of the modified silk fabric has been improved, as evidenced by sharper and more pronounced diffraction peaks. The modified silk fabric exhibited a UPF value of 30.58, indicating a high level of UV protection, as fabrics with UPF values over 30 are recognized for their effectiveness in blocking UV rays. Additionally, with an ABTS^˙+ clearance rate of 87.36%, the fabric demonstrates excellent antioxidant properties. The fiber was tested against E. coli and S. aureus following GB/T 20944.3–2008, with results indicating that the antibacterial rate of <i>Staphylococcus aureus</i> was more than 90%. The contact angle of the modified silk fabric is 138^°, which has certain water-repellent and stain-resistant properties.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4321 - 4332"},"PeriodicalIF":2.3,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation, Analysis, and Characterization of Miura-ori Structure Woven Fabric","authors":"Yuan Tian,&nbsp;Zhaoqun Du,&nbsp;Qiaoli Xu,&nbsp;Xiao Liu","doi":"10.1007/s12221-025-01122-9","DOIUrl":"10.1007/s12221-025-01122-9","url":null,"abstract":"<div><p>To produce textiles with geometric patterns and stable structure, the classic Miura-ori structure in the origami folding structure was selected. Through material selection and fabric structural design, the Miura-ori structure fabric was developed using a combination of elastic and inelastic weft yarns on automated jacquard looms. Miura-ori structure woven fabric Miura-45 and the regional fabrics Miura-M, Miura-V, and Miura-P forming the structure were successfully fabricated. Miura-45 exhibited well-defined creases and flat unfolded surfaces, with elastic weft shrinkage effectively forming the Miura-ori structure post-weaving. To further study the Miura-ori structure fabric and prove the stability of the structure, the mechanical properties and thermal–moisture performances of Miura-45 and fabrics in each regions were analyzed. The results showed that Miura-45 exhibited minimal tensile deformation ratio (0.2%), maximum stiffness in the warp direction (353 mN·cm on the front), and optimal compression resistance (compression ratio 16.1%), confirming structural stability. Furthermore, Miura-45 showed superior air permeability (69.4% improvement under the pressure difference of 200 Pa), moisture transmission (15.3% higher), and thermal resistance (0.105 m²·K/W) compared to Miura-P. Miura-ori woven textiles demonstrate remarkable structural integrity and scalability for industrial production. Their combination of geometric precision and enhanced performance suggests promising applications in technical textiles and smart material systems.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4605 - 4614"},"PeriodicalIF":2.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation on the Mesoscopic Creep Behavior and Stress Effects of Triaxial Warp-Knitted Composites","authors":"Geyi You,&nbsp;Xiaoping Gao,&nbsp;Junbo Xie,&nbsp;Jiawei Chen,&nbsp;Li Chen","doi":"10.1007/s12221-025-01115-8","DOIUrl":"10.1007/s12221-025-01115-8","url":null,"abstract":"<div><p>Triaxial warp-knitted composites (TWKC) are widely used in wind turbine blades owing to the excellent mechanical properties and cost-effectiveness. Due to the viscoelasticity of TWKC, it is prone to creep which may compromise structural safety. This study investigated the mesoscopic creep behavior of TWKC using nanoindentation tests. The three-point bending creep behavior of TWKC at various stress levels were analyzed, and the creep failure mechanism was clarified. The Hookean–Kelvin–Kelvin (HKK) model was established for predicting creep displacement–time curves of TWKC. The results showed that the creep resistance of the fiber is superior to that of the interface, which in turn is superior to that of the matrix. The proposed model accurately predicts the creep behavior under different stress levels with fitting correlation coefficient all above 98%. This study provides theoretical guidance for the long-term creep mechanical properties of TWKC, and thus has advantage to the optimal design of the composites.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4549 - 4557"},"PeriodicalIF":2.3,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep Learning Approach for Predicting the Physical Properties of Air-Jet Textured Yarn with PET/PTT Bicomponent Fiber","authors":"Hyeongmin Moon,&nbsp;Md Morshedur Rahman,&nbsp;Seunga Choi,&nbsp;Sarang Oh,&nbsp;Chang Kyu Park,&nbsp;Joonseok Koh","doi":"10.1007/s12221-025-01120-x","DOIUrl":"10.1007/s12221-025-01120-x","url":null,"abstract":"<div><p>Accurate prediction of air-jet textured yarn (ATY) properties is essential for product development and quality control in textile manufacturing. This study proposes a deep learning-based regression model to predict the properties of ATY produced with PET/PTT bicomponent fiber as the core yarn. The model’s performance was compared with traditional statistical regression methods. The dataset included key process parameters—denier, overfeed, air pressure, and processing speed—and their corresponding physical properties: tenacity, initial modulus, length instability, and loop density gap. Hyperparameter tuning, regularization, and K-fold cross-validation were employed to enhance model performance and reduce overfitting. Mean absolute error convergence analysis was also used to determine the optimal number of training epochs. Results showed that the multilayer perceptron deep learning model consistently outperformed statistical regression models, achieving <i>R</i>^<i>2</i> values above 0.7 for initial modulus, length instability, and loop density gap. Prediction for tenacity showed limited improvement due to weak feature-property correlations. Importantly, the deep learning model improved predictive accuracy for the loop density gap, a property with minimal linear correlation to process variables, though with higher variance—indicating that additional data could improve stability. These findings demonstrate the potential of deep learning as a powerful tool for predicting complex material properties in textile processes, particularly when dealing with nonlinear relationships among multiple process factors.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4591 - 4604"},"PeriodicalIF":2.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile Antimicrobial and Flame-Retardant Treatment on Denim Clothing Using Citric Acid: Influence of Concentration and Application Method","authors":"Negar Nakhaei,&nbsp;Majid Montazer,&nbsp;Tina Harifi,&nbsp;Afrooz Rahmani","doi":"10.1007/s12221-025-01113-w","DOIUrl":"10.1007/s12221-025-01113-w","url":null,"abstract":"<div><p>Considering the popularity and the need to improve properties of denim, citric acid (CA), as a safe, readily available, economical, and environmentally friendly compound, was used to impart antibacterial and flame-retardant properties to denim. For this purpose, the effects of CA and sodium dihydrogen phosphate (SDHP) concentration as catalyst, as well as application methods, including pad-dry-cure and exhaustion, were investigated on the antimicrobial activity of the samples against the Gram-positive bacterium <i>Staphylococcus aureus</i> and the Gram-negative bacterium <i>Escherichia coli</i>. The sample treated with 5% CA and 3% catalyst using the pad-dry-cure method demonstrated the best performance and the maximum reduction in bacterial growth. Since the CA in the exhaustion method had no reasonable antibacterial effects, subsequent heat treatment, including drying at 80 °C and curing at 130 °C, was performed. The sample treated with 10% CA and 6% catalyst exhibited the maximum antibacterial effect through the exhaustion/curing method. The treated fabric exhibited a slower burning rate, reduced flame spread, and self-extinguishing properties, indicating successful flame-retardant properties. Moreover, the physico-mechanical properties of the sample treated by the pad-dry-cure method were adversely affected, showing decreased air and water vapor permeability, abrasion resistance, tensile strength, and bending length. To enhance the fabric properties, silicone softener was added to improve the handle and flexibility. However, while the softener improved the fabric comfort and drape, it negatively impacted the antibacterial results, reducing their effectiveness. On the other hand, silicone softener enhances the flame-retardant properties of the fabric, increasing its resistance to ignition and flame spread. To comprehensively evaluate the effects of the treatment, field-emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA), and Fourier-transform infrared spectroscopy (FTIR) were performed. These analyses confirmed the chemical interactions between CA, catalyst, and the denim, as well as changes in thermal stability and surface morphology. Additionally, the fire resistance of the treated samples was examined after repeated washing, confirming the durability and persistence of the flame-retardant effect. The results highlight the effective role of CA as an antimicrobial and flame-retardant agent for denim, making it a promising multifunctional treatment for improving the performance of denim fabrics. However, post-treatment with silicon softener may be required to optimize the functionality and comfort.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4305 - 4320"},"PeriodicalIF":2.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of Green Extraction and Spinnability Enhancement of Bamboo Fiber via Multi-stage Synergistic Processing","authors":"Chen Liu,&nbsp;Jipan Lou,&nbsp;Xinggang Shan,&nbsp;Shujun Chen,&nbsp;Huafeng Feng","doi":"10.1007/s12221-025-01124-7","DOIUrl":"10.1007/s12221-025-01124-7","url":null,"abstract":"<div><p>This study presented a multi-stage bamboo fiber treatment process integrating ozone pretreatment, bio-enzymatic synergistic degradation, and hydrogen peroxide refining, aiming to achieve efficient non-cellulosic component removal and fiber performance optimization through physico-biochemical synergy. Experimental results demonstrated that the optimal process F-5 (ozone → hemicellulase → laccase → H₂O₂) significantly improved fiber quality: bundle fiber fineness decreased to 2.73 tex, while residual gum content (2.52%) and residual lignin (5.24%) were reduced by 66.5% and 78.2%, respectively, compared to the control group (F-8: 7.52% gum, 24.03% lignin). The treated fibers exhibited excellent mechanical properties with a breaking strength of 4.58 cN/dtex and elongation at break of 4.17%. Microscopic characterization (SEM) revealed clean fiber surfaces with high separation integrity, while FTIR analysis confirmed significant attenuation of lignin characteristic peaks (1652 cm⁻¹) and hemicellulose acetyl-group bands (1745 cm⁻¹). Mechanistic studies indicated that ozone pretreatment disrupted lignin crosslinked networks (porosity increased substantially) to enhance subsequent reagent penetration, bi-enzymes selectively degrade hemicellulose (via β-1,4-glycosidic bond cleavage) and lignin (via phenolic unit oxidation), and hydrogen peroxide post-treatment eliminates residual gums. This stage-synergized strategy reduced chemical consumption, providing a feasible approach for green bamboo fiber extraction with potential applications in biomedical textiles, bio-composites, and eco-friendly absorbent materials.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4233 - 4247"},"PeriodicalIF":2.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospun Carboxymethylcellulose as a Scaffold for Biomedical Applications","authors":"Nuraina Anisa Dahlan,&nbsp;Pooria Pasbakhsh,&nbsp;Sin-Yeang Teow,&nbsp;Dan Kai,&nbsp;Yau Yan Lim,&nbsp;Janarthanan Pushpamalar","doi":"10.1007/s12221-025-01111-y","DOIUrl":"10.1007/s12221-025-01111-y","url":null,"abstract":"<div><p>Electrospinning of pure carboxymethylcellulose (CMC) and its derivatives for biomedical applications is attractive due to their interesting biology and biomimetic properties. However, the main challenges in electrospinning pure CMC are strong electrostatic repulsions and its highly viscous nature. In this research, electrospun membranes consisting of grafted CMC-polyethylene glycol (CMC-PEG) and polycaprolactone (PCL) were successfully fabricated using emulsion electrospinning. Membranes with a PCL:CMC-PEG ratio of 80:20 formed uniform fiber with an average diameter of 930.2 ± 31.0 nm. Furthermore, PCL/CMC-PEG membranes demonstrated excellent mechanical properties suitable for use as scaffolds for soft tissue repair and skin wound healing. Water contact angle analysis showed that the incorporation of grafted CMC-PEG improved the membrane wettability. Electrospun membranes with a PCL: CMC-PEG ratio of 80:20 exhibited the highest in vitro degradation, with 82.0 ± 8.7% weight loss over 10 weeks of incubation. In vitro studies confirmed the non-cytotoxic properties of PCL:CMC-PEG (80:20) membranes when tested with normal human dermal fibroblast (NHDF) cells. Morphological analysis further confirmed the attachment of NHDF cells followed by cell proliferation and migration. These membranes demonstrated optimal mechanical properties, hydrophilicity, and biocompatibility, making them promising tissue scaffolds for tissue engineering and regenerative medicine applications.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4177 - 4193"},"PeriodicalIF":2.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12221-025-01111-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ Raman Spectroscopic Study of Microstructure–Tensile Properties Relationship of Plant Fibers","authors":"Zhen Huang,&nbsp;Zihan Zhang,&nbsp;Guiling Wei,&nbsp;Yuan Chen,&nbsp;Junjie Wang,&nbsp;Zhen Wang","doi":"10.1007/s12221-025-01117-6","DOIUrl":"10.1007/s12221-025-01117-6","url":null,"abstract":"<div><p>Plant fibers represent a class of natural composite materials that exhibit an exceptional balance between strength and toughness, a characteristic derived from their sophisticated hierarchical architecture. Through comprehensive X-ray diffraction (XRD) analysis and single fiber tensile testing, we systematically investigated key structural parameters, including crystalline cellulose content and microfibril angle (MFA), along with their corresponding mechanical properties in three representative plant fibers: hemp, sisal, and coir. Furthermore, the fracture morphologies of them were examined using scanning electron microscope (SEM). Specifically, the inherent variations in mechanical properties of plant fibers were quantitatively characterized using a two-parameter Weibull statistical analysis. In addition, the failure mechanism of plant fibers was investigated by combining single fiber tensile test with in situ Raman spectroscopic measurement. The results showed that the high cellulose content and low MFA were associated with the elastic behavior and brittle fracture of plant fibers. The fracture of element fibers was the main failure mechanism of the hemp and sisal fibers with high cellulose content and low MFA. In contrast, the final breakage of the coir fiber with lower cellulose content and higher MFA was attributed to the accumulation of interface sliding including debonding of element fibers and cellulose microfibers.</p></div>","PeriodicalId":557,"journal":{"name":"Fibers and Polymers","volume":"26 10","pages":"4223 - 4232"},"PeriodicalIF":2.3,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}