Journal of Rubber Research最新文献

{"title":"Engineering EPDM elastomeric composites for flexible and lightweight electromagnetic interference shielding applications: a review","authors":"Fathima Shifna,&nbsp;Patel Yamini Kumari,&nbsp;Shruti Gupta,&nbsp;Balasubramanian Kandasubramanian","doi":"10.1007/s42464-026-00343-8","DOIUrl":"10.1007/s42464-026-00343-8","url":null,"abstract":"<div><p>The fast development of portable technology and electronic devices has made Electromagnetic Interference (EMI) shielding crucial. Ethylene propylene diene monomer (EPDM), a flexible synthetic elastomer, has surfaced as a potential material for EMI shielding when combined with conductive fillers. The study examines the fundamentals of EMI shielding, with a focus on reflection, absorption, and multiple reflection implementations. Traditional metallic materials, such as copper and aluminium, exhibit high shielding efficiency but lack flexibility and cost-effectiveness. EPDM-based composites, incorporating fillers like carbon black, carbon nanotubes (CNTs), MXene, as well as graphene nanoplatelets (GnPs), demonstrate excellent mechanical properties, flexibility, and tunable shielding effectiveness. The review evaluates various EPDM composites, fabrication techniques, and shielding performance across different frequency ranges. Processing methods such as melt-mixing, two-roll milling, and vacuum impregnation notably influence the distribution of fillers, electrical conductivity, and shielding performance. The findings suggest that EPDM-based composites provide a flexible and lightweight alternative to conventional metallic shielding materials. Their adaptability across aerospace, automotive, and electronic applications underscores their potential to mitigate EMI-related disruptions. However, challenges remain in optimising conductivity, durability, and environmental stability. Future research should focus on enhancing these properties while exploring novel filler combinations and scalable fabrication techniques to establish EPDM composites as next generation shielding materials. The review provides a critical analysis of EPDM-based composites for EMI shielding, covering mechanisms, materials, fabrication strategies, structure–property relationships, and applications. Unlike general reviews on polymer-based EMI shielding, this work critically analyses EPDM as a distinctive elastomeric matrix that combines flexibility, weather resistance, and mechanical endurance. It identifies key knowledge gaps in optimising filler dispersion, interfacial design, and structure–property relationships while highlighting the underexplored potential of scalable, self-healing, and sustainable EPDM composites for next generation EMI shielding technologies.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"28 5","pages":"785 - 797"},"PeriodicalIF":1.5,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147352731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and properties of surface-modified graphene oxide for reinforcement in acrylonitrile-butadiene rubber composites","authors":"C. Krishnamurthy,&nbsp;V. Chandran,&nbsp;S. Vishvanathperumal","doi":"10.1007/s42464-026-00338-5","DOIUrl":"10.1007/s42464-026-00338-5","url":null,"abstract":"<div><p>Acrylonitrile-butadiene rubber (NBR) composites reinforced with surface-modified graphene oxide were prepared via melt compounding. Graphene oxide was functionalised using 3-aminopropyltriethoxysilane (KH550), 4,4′-diphenylmethane diisocyanate (MDI), and octadecylamine (ODA), and the effects of these modifications on curing, mechanical, swelling, and durability properties were evaluated. The modified fillers enhanced torque and reduced curing time compared to neat NBR. At 6 phr loading, tensile strength improved by 132% with GO, 139% with KHGO, 164% with MDGO, and 185% with ODGO. While elongation at break and rebound resilience decreased with filler loading, hardness, compression set, crosslinking density, swelling, and abrasion resistance increased up to 6 phr but declined at higher contents. Among the fillers, ODA-modified GO offered the best reinforcement, outperforming MDI- and KH550-modified GO as well as unmodified GO.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"29 1","pages":"1 - 24"},"PeriodicalIF":1.5,"publicationDate":"2026-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of rubber plantations on the school education of children: evidence from rubber farmers in China","authors":"Ruijin Liu,&nbsp;Xinying Sun,&nbsp;Lin Yang,&nbsp;Wei Wu,&nbsp;Changhui He,&nbsp;Ziqing Lin,&nbsp;Danyan Shen","doi":"10.1007/s42464-026-00336-7","DOIUrl":"10.1007/s42464-026-00336-7","url":null,"abstract":"<div><p>Utilizing ordered logit and moderating effect models, this study examines the impacts and underlying processes and mechanisms through which rubber plantations influence school education. The analysis is grounded in survey data collected from rubber farmers in Hainan Province and Xishuangbanna, Yunnan Province. The findings reveal that an expansion of rubber plantations consistently fosters an increase in educational expenditure. However, the influence on school duration exhibits temporal variability; during market booms, the increase in rubber plantations does not increase educational attainment. Conversely, when the market enters a downturn, the effect of rubber acreage on the highest level of education attained becomes notably positive along with the wider implementation of the tuition-free programme for 9-year compulsory education in China, which is corroborated by evidence from younger individuals and explained by changes in the relationship between career expectation and rubber plantations as economic biological assets. Specifically, farmers with a strong inclination to expand their rubber plantations exhibit a weaker association between area expansion and years of schooling than do those with lesser intentions.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"28 5","pages":"799 - 813"},"PeriodicalIF":1.5,"publicationDate":"2026-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147352855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Foamability study, fabrication and characterisation of deproteinised natural rubber latex foam","authors":"Roslim Ramli,&nbsp;Ruslimie Che Ali,&nbsp;Mohamad Akmal Abdul Rahim,&nbsp;Shamsul Kamaruddin,&nbsp;Asrul Mustafa,&nbsp;Fatimah Rubaizah Mohd Rasdi,&nbsp;Siti Shuhada Shuib","doi":"10.1007/s42464-026-00340-x","DOIUrl":"10.1007/s42464-026-00340-x","url":null,"abstract":"<div>\u0000 \u0000 <p>This study examines the feasibility of Pureprena® latex foam with the aim of offering a safer alternative to traditional natural rubber (NR) latex foam, particularly for applications requiring lower protein allergenicity. The research investigates the effects of deproteinisation on foamability, manufacturing processes, and the properties of Pureprena® latex foam. The foamability and stability of the latex foam were evaluated using two different instruments: the FoamScan® analyser, which measures foamability of the latex and foam decay, and the Kenwood® mixer simulates foam generation under production-like conditions. Key stages of latex foam production include compounding, foaming, gelling, moulding, and vulcanisation. Potassium oleate was employed as a foaming agent, and Pureprena® latex foam demonstrated excellent foam stability, with less than 15% volume decay. The physical properties of Pureprena® and LATZ latex foams were compared across high- and low-density formulations. In high-density foams (0.20 g/cm³), both materials exhibited similar characteristics, including approximately 11% volume shrinkage and compression set values of 5.8% (LATZ) and 5.5% (Pureprena®). Low-density formulations (0.10 g/cm³) showed reduced shrinkage, indicating enhanced dimensional stability. Both foams met elongation requirements, with values of 390% for LATZ and 370% for Pureprena®. Additionally, the extractable rubber protein content in Pureprena® latex foam was remarkably low (&lt; 50 µg/g), indicating its suitability for applications where hypoallergenic properties are important.</p>\u0000 </div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"29 1","pages":"43 - 56"},"PeriodicalIF":1.5,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of nanoclay on the mechanical performance of CR/NR composites","authors":"K. Parthasarathy,&nbsp;S. Baskar,&nbsp;S. Vishvanathperumal","doi":"10.1007/s42464-026-00339-4","DOIUrl":"10.1007/s42464-026-00339-4","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigates the effect of nanoclay incorporation on the properties of chloroprene rubber (CR)/natural rubber (NR) blends, with a primary objective of enhancing mechanical performance, curing behaviour, solvent resistance, and durability for advanced engineering applications. Nanocomposites were prepared using a 50/50 CR/NR blend with varying nanoclay loadings of 0, 2, 4, 6, 8, and 10 phr (parts per hundred rubber) via a two-roll mill and subsequently vulcanised at 160 °C in a compression mould. Comprehensive characterisation included tensile strength, stress at 100% elongation, hardness, elongation at break, tear strength, rebound resilience, compression set, swelling, and abrasion resistance. Curing analysis revealed that nanoclay accelerated vulcanisation and increased torque values, indicating higher crosslink density. Up to 6 phr nanoclay, tensile strength and stress at 100% elongation improved by 31% and 32%, respectively, while tear strength increased by 43%. Beyond this loading, these properties declined. Elongation at break and rebound resilience decreased with increasing nanoclay, whereas hardness, tear strength, and compression set consistently rose. Solvent interaction studies were performed using eleven solvents—benzene, toluene, xylene, mesitylene, n-pentane, n-hexane, n-heptane, n-octane, dichloromethane, chloroform, and carbon tetrachloride—providing insight into the swelling behaviour of nanocomposites in both aromatic/aliphatic hydrocarbons and chlorinated solvents. The results demonstrate that optimal nanoclay content improves mechanical strength, abrasion resistance, and solvent resistance, supporting its potential use in demanding industrial environments.</p>\u0000 </div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"29 1","pages":"25 - 41"},"PeriodicalIF":1.5,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of modified nanosilica on swelling resistance and mechanical properties of chlorinated ethylene propylene diene monomer/chlorinated acrylonitrile butadiene rubber blend nanocomposites","authors":"M. Karthikeyan,&nbsp;E. Ganapathy Sundaram,&nbsp;S. Vishvanathperumal,&nbsp;S. Pradeep Kumar","doi":"10.1007/s42464-026-00333-w","DOIUrl":"10.1007/s42464-026-00333-w","url":null,"abstract":"<div>\u0000 \u0000 <p>This study explores the reinforcement potential of modified nanosilica (mNS), derived from rice husk ash, in a 50/50 blend of chlorinated ethylene propylene diene monomer (Cl-EPDM) and chlorinated acrylonitrile butadiene rubber (Cl-NBR). The nanosilica was surface-modified using a 2:1 ratio of bis[3-(triethoxysilyl)propyl]tetrasulfide (TESPT) to polyoxyethylene(20)sorbitan monolaurate (TWEEN-20). Rubber nanocomposites were prepared via conventional two-roll mill mixing, and the effects of varying mNS content were assessed on processing behaviour, mechanical performance, swelling, oil resistance, morphology, compression set, and dynamic properties. Results showed that incorporation of mNS improved tensile strength, stress at 100% elongation, tear strength, hardness, abrasion resistance, and resistance to swelling and oil uptake, while reducing elongation at break, rebound resilience, and heat build-up. Notably, optimal mechanical enhancement was observed at 6 phr mNS loading. Swelling studies conducted at different temperatures and with various solvents revealed a decline in mole percent uptake with increasing mNS content. Overall, the use of TESPT/TWEEN-20-modified nanosilica significantly enhanced the multifunctional performance of Cl-EPDM/Cl-NBR composites.</p>\u0000 </div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"28 5","pages":"737 - 758"},"PeriodicalIF":1.5,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147352640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electromagnetic interference shielding using aluminum-layered EPDM composites: fabrication and performance analysis","authors":"Fathima Shifna,&nbsp;Patel Yamini Kumari,&nbsp;Shruti Gupta,&nbsp;Kailas Kantilal Sawant,&nbsp;A. A. Bazil Raj,&nbsp;Balasubramanian Kandasubramanian","doi":"10.1007/s42464-026-00337-6","DOIUrl":"10.1007/s42464-026-00337-6","url":null,"abstract":"<div>\u0000 \u0000 <p>Electromagnetic interference (EMI) in the high-frequency regime demands shielding materials that are lightweight, corrosion-resistant, and conformable. This study evaluates aluminium-layered ethylene–propylene–diene monomer (EPDM) elastomer laminates as flexible EMI shields for the X-band (8–12 GHz). A targeted parametric study was conducted on five configurations spanning aluminium thickness (0.011/0.055 mm), surface condition (unperforated/perforated), and bonding route (TCE, rubber solution, Heatex). Free-space measurements on an open-area test site (OATS) captured S-parameters and radar cross-section (RCS). The laminates exhibited strong reflection attenuation (S₁₁: – 42 to – 77.5 dB) and substantial transmission loss (S₂₁: – 44 to – 58 dB), confirming effective shielding. Computed shielding effectiveness was absorption-dominated, consistent with multiple internal reflections and interfacial scattering within the aluminium–EPDM architecture that suppresses coherent re-emission toward the receiver. The unperforated, thicker-foil laminate delivered the deepest reflection minima and lowest transmission, while perforated foils produced useful frequency-dependent responses via scattering and partial impedance matching. RCS values remained below 0.1 m² across the band, indicating simultaneous suppression of electromagnetic penetration and backscatter. Consequently, the results demonstrate that EPDM/Al laminates unite mechanical flexibility with high X-band attenuation, providing a scalable, weather-resistant, and corrosion-tolerant solution for aerospace, defense, telecommunications, and flexible electronics.</p>\u0000 </div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"28 5","pages":"815 - 825"},"PeriodicalIF":1.5,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147352797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and properties of graphene oxide-modified ethylene-propylene-diene monomer and acrylonitrile-butadiene rubber composites using octadecylamine, 3-aminopropyltriethoxysilane, and 4,4′-diphenylmethane diisocyanate","authors":"S. Vishvanathperumal,&nbsp;A. Kannan","doi":"10.1007/s42464-026-00334-9","DOIUrl":"10.1007/s42464-026-00334-9","url":null,"abstract":"<div><p>Graphene oxide (GO)-modified ethylene-propylene-diene monomer/acrylonitrile-butadiene rubber (EPDM/NBR) composites were developed via melt compounding using three functional agents: octadecylamine (ODA), 3-aminopropyltriethoxysilane (KH550), and 4,4′-diphenylmethane diisocyanate (MDI). These modifiers tailored the surface chemistry of GO to enhance interfacial compatibility and dispersion within the rubber matrix. The impact of each modified GO system on curing behaviour, mechanical performance, and solvent resistance was systematically studied. Mechanical properties were evaluated in accordance with ASTM standards: tensile strength and elongation at break (ASTM D412), tear strength (ASTM D624), hardness (ASTM D2240), abrasion resistance (ASTM D5963), and rebound resilience (ASTM D2632). Results showed that 5 phr (parts per hundred rubber) filler loading yielded optimum performance, with GO-MDI delivering the highest improvements (137% in tensile strength) due to its strong chemical interaction with the matrix. In contrast, unmodified GO exhibited poor dispersion and minimal reinforcement. Beyond 5 phr, mechanical and crosslinking properties declined due to filler agglomeration. This study highlights the importance of tailored nanofiller functionalisation in overcoming filler-matrix incompatibility and opens a pathway for designing multifunctional elastomeric materials for advanced sealing, automotive, and chemical-resistant applications.</p></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"28 5","pages":"759 - 783"},"PeriodicalIF":1.5,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147352767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diversity, pathogenicity, fungicide sensitivity, and field management of the circular leaf spot pathogen complex on rubber trees in Vietnam","authors":"Hieu Nguyen Don,&nbsp;Uyen Nguyen Thi Kim,&nbsp;Trang Nguyen Thi Thanh","doi":"10.1007/s42464-025-00332-3","DOIUrl":"10.1007/s42464-025-00332-3","url":null,"abstract":"<div>\u0000 \u0000 <p>Circular Leaf Spot (CLS) has recently emerged as a significant foliar disease affecting <i>Hevea brasiliensis</i> in Vietnam. This study investigated the causal agents, their morphological and molecular characteristics, and evaluated effective disease management approaches. A total of 188 fungal isolates were obtained from infected rubber leaves, comprising 94 isolates of <i>Pestalotiopsis</i> spp. and 94 isolates of <i>Colletotrichum</i> spp. Morphological observations and rDNA-ITS sequencing identified <i>Pestalotiopsis microspora</i> (divided into three intraspecific groups) and three <i>Colletotrichum</i> species complexes: <i>C. gloeosporioides</i>, <i>C. siamense</i>, and <i>C. acutatum</i>. Pathogenicity tests on detached leaves and potted rubber clones confirmed that all isolates were pathogenic, with mixed inoculations causing significantly more severe symptoms than single isolates (<i>p</i> &lt; 0.01). In vitro assays demonstrated that propiconazole, tebuconazole, and tetramycin effectively inhibited mycelial growth of both pathogens. A field trial was established to evaluate an integrated disease management model, incorporating sanitation, biological residue treatment, nutrition-based fertilisation, and targeted fungicide application. The model significantly delayed disease onset, reduced CLS incidence and severity, improved canopy density, and resulted in a 12.3% reduction in management costs and an 11.3% increase in latex yield compared to the control. The study highlights the complex etiology of CLS involving both <i>Pestalotiopsis</i> and <i>Colletotrichum</i> spp., and demonstrates the effectiveness of an integrated approach for sustainable disease management in rubber plantations.</p>\u0000 </div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"28 5","pages":"719 - 736"},"PeriodicalIF":1.5,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147352768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial intelligence in the optimisation of rubber properties: experimental validation and testing of predicted models","authors":"Piyali Roy Choudhury,&nbsp;Radha Senthilkumar,&nbsp;Anzio Ebin,&nbsp;Hemanathan Thangarasu","doi":"10.1007/s42464-025-00331-4","DOIUrl":"10.1007/s42464-025-00331-4","url":null,"abstract":"<div><p>Rubber compound development usually caters to a particular engineering application, which can require a combination of properties. The process starts with choosing a starting point formulation, which yields properties closer to the required properties (target). To achieve this target, the formulation must be changed and tested for its properties. The trial-and-error method is an old technique for compound design that typically requires significant time, energy, and resources, as well as technical experts with extensive knowledge and experience. The major requirement is the effective modelling of rubber and ingredients with their properties to reduce cost and improve sustainability and efficiency. This study utilised and explored various data-driven approaches for compound design by addressing complex relationships using artificial intelligence models and machine learning algorithms, without requiring extensive laboratory experiments. The artificial neural networks, random forest, decision tree, and extreme gradient boosting (XGBoost) regression models were trained on natural rubber-based formulation data and presented alongside three corresponding mechanical properties. The compound development process predicted and optimiSed rubber formulations, properties, and ingredient levels for specific applications using the database. The outstanding performance of the XGBoost model, which achieved an R² value of up to 0.96, demonstrates the advancements in rubber formulation design through machine learning. The study uncovered encouraging results as well as potential challenges for the future application of machine learning in rubber compound design.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":662,"journal":{"name":"Journal of Rubber Research","volume":"28 5","pages":"705 - 718"},"PeriodicalIF":1.5,"publicationDate":"2026-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147352669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}