Journal of Polymers and the Environment最新文献

{"title":"Cross-Linked Polymeric Network with Aniline Trimer as Solid-Solid Phase Change Materials for Efficient Solar-to-Thermal Energy Conversion and Storage","authors":"Ismail Omrani,&nbsp;Hamid Yeganeh,&nbsp;Parsa Mousavi,&nbsp;Masoud Babaahmadi","doi":"10.1007/s10924-025-03674-6","DOIUrl":"10.1007/s10924-025-03674-6","url":null,"abstract":"<div><p>Herein, we report the synthesis and characterization of a novel series of sunlight-driven solid-solid phase change materials (S-SPCMs) based on cross-linked polyurethane networks. These materials were engineered by reacting epoxy-terminated poly (ethylene glycol)-containing polyurethane macromonomer (EPU) with amine-terminated aniline trimer (ATD). The design leverages the crystalline domains of poly (ethylene glycol) (PEG) as the phase-change functional component, while the aniline trimer serves a dual role: acting as a covalent cross-linker and enabling efficient solar energy harvesting through its photothermal conversion properties. The molecular structure, phase-change behavior, thermal conductivity, solar-thermal conversion efficiency, crystallinity, and thermal stability of the synthesized S-SPCMs were systematically investigated. Notably, the materials achieved latent heat values of 57.1–79.2 J/g, comparable to state-of-the-art solid-solid PCMs, while maintaining structural integrity during phase transitions. The incorporation of ATD into the polyurethane network enhanced thermal conductivity, facilitating rapid heat transfer across the material. Optimized formulations with tailored ATD concentration demonstrated exceptional thermal reliability, retaining &gt; 95% of their latent heat storage capacity after 50 thermal cycles, alongside robust thermal stability up to 250 °C. Furthermore, the S-SPCMs exhibited outstanding solar-thermal conversion efficiency under simulated sunlight, underscoring their potential for real-world solar energy applications. These results highlight the synergistic interplay between the PEG phase-change domains and the photothermal ATD cross-linker, which collectively enable efficient energy capture, storage, and release. This work advances the development of multifunctional, recyclable phase-change materials for sustainable thermal management systems, offering a promising pathway toward reducing reliance on fossil-fuel-derived energy in heating and cooling applications.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4629 - 4641"},"PeriodicalIF":5.0,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Characterization and Anti-inflammatory Activity of a Polysaccharide Produced by Endophytic Fungus Talaromyces Sp. CCTCC M 2025051","authors":"Zichao Wang,&nbsp;Yixin Shi,&nbsp;Xin Liu,&nbsp;Na Li,&nbsp;Jiaqi Wang,&nbsp;Hongtao Zhang,&nbsp;Yingjie Feng,&nbsp;Yongming Xu,&nbsp;Qinggong Chen,&nbsp;Changxing Liu,&nbsp;Tao Liu,&nbsp;Dandan Liu,&nbsp;Qi Wang,&nbsp;Jinchu Yang,&nbsp;Lemei An","doi":"10.1007/s10924-025-03664-8","DOIUrl":"10.1007/s10924-025-03664-8","url":null,"abstract":"<div><p>Endophytic fungi and their secondary metabolites represent a valuable microbial resource with diverse bioactivities and potential applications. In this study, <i>Talaromyces</i> sp. CCTCC M2025051 was isolated from wheat bran, and its extracellular polysaccharide (TSP) was investigated. Compositional analysis revealed that the yield of TSP was 3.34 ± 0.17 g/L, comprising 93.11 ± 2.93% carbohydrate and 2.82 ± 0.07% protein. TSP was identified as a heteropolysaccharide composed of arabinose, galactose, glucose, mannose, and glucuronic acid in a molar ratio of 0.0985: 4.0208: 35.6949: 2.0528: 0.1718, with a molecular weight of 235.187 kDa and a polydispersity of 1.886. In vitro assays demonstrated that TSP effectively scavenged ABTS, DPPH, hydroxyl, and superoxide radicals in a concentration-dependent manner. Furthermore, TSP exhibited significant anti-inflammatory activity in lipopolysaccharide (LPS)-induced RAW 264.7 macrophages by reducing the production of nitric oxide (NO), tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β). This effect was accompanied by the modulation of oxidative stress markers, including superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and malondialdehyde (MDA). This work provides a scientific basis for the potential application of TSP as an antioxidant and anti-inflammatory agent.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4616 - 4628"},"PeriodicalIF":5.0,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Synthesis of Green, Flexible, and Stretchable Superabsorbent Polymer Sheets with High-Performance Antibacterial Properties: A Scalable and Sustainable Solution Polymerization Approach","authors":"Alireza Sabzevari,&nbsp;Mobina Dashti,&nbsp;Kourosh Kabiri","doi":"10.1007/s10924-025-03670-w","DOIUrl":"10.1007/s10924-025-03670-w","url":null,"abstract":"<div><p>This study presents a novel one-step synthesis method for producing green, flexible, and stretchable superabsorbent polymer sheets with high-performance antibacterial properties, utilizing an energy-efficient and sustainable solution polymerization approach. Acrylic acid was partially neutralized and crosslinked with polyethylene glycol diacrylate, while ethylene glycol was a reactive solvent. Quaternary ammonium compounds (CTAB and TBAB) were incorporated as antibacterial agents, with UV initiation enabling rapid polymerization at room temperature. The resulting SAPs exhibited exceptional swelling capacities (up to 79.8 g/g in water) and mechanical properties, including elongation at break up to 294.2%, attributed to the plasticizing effects of CTAB and TBAB. Antibacterial assays demonstrated &gt; 99.9% bacterial reduction within 1–3 h for CTAB-containing SAPs. The elimination of energy-intensive drying and surface crosslinking steps highlights the scalability and sustainability of this method. Biocompatibility tests confirmed cell viability &gt; 84%, meeting ISO 10993–5 standards. This technology offers a promising pathway for advanced applications in hygiene products and regenerative medicine.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4601 - 4615"},"PeriodicalIF":5.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green Synthesis of Maleic Anhydride-Grafted-Xyloglucan Hydrogel Film and its In Vitro Scratch Wound Assay, Anti-Diabetic and Anti-Inflammatory Studies","authors":"Jesna Das Silvadas,&nbsp;Simi Chandroth Kalyad","doi":"10.1007/s10924-025-03663-9","DOIUrl":"10.1007/s10924-025-03663-9","url":null,"abstract":"<div><p>This study developed a novel xyloglucan-graft-maleic anhydride (XG-g-MA) hydrogel film via an environmentally friendly one-pot synthesis and solvent casting method. The successful grafting and resulting material properties were confirmed by FTIR, TGA and FESEM analysis. Recognizing the critical link between diabetes and inflammation in wound healing, we investigated the hydrogel’s multi-functional properties. In vitro assays demonstrated that the XG-g-MA hydrogel exhibited a concentration-dependent anti-inflammatory activity with an IC₅₀ value of 72.13 µg/ml and anti-diabetic activity (α-amylase inhibition, IC₅₀ &gt; 100 µg/ml). The hydrogel also promoted wound healing, achieving a 97.5% cell migration rate in a scratch assay within 36 h. Furthermore, the XG-g-MA film showed good hemocompatibility, as evidenced by its minimal impact on red blood cell counts and a hemolysis rate comparable to the control. These compelling in vitro findings indicate that the XG-g-MA hydrogel possesses a promising combination of anti-diabetic, anti-inflammatory, and wound-healing properties. The results suggest that this material is a potential candidate for further investigation as a versatile biomaterial, especially for challenging wound management.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4586 - 4600"},"PeriodicalIF":5.0,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Expanded Bead Foam Based on Bio-polypropylene (BioEPP): Fabrication and Reinforcement with Nanoparticles","authors":"Ismael Sánchez-Calderón,&nbsp;Mercedes Santiago-Calvo,&nbsp;Esteban Cañibano,&nbsp;María Teresa Fernández,&nbsp;Alberto López-Gil,&nbsp;Miguel Ángel Rodríguez-Pérez,&nbsp;Victoria Bernardo","doi":"10.1007/s10924-025-03665-7","DOIUrl":"10.1007/s10924-025-03665-7","url":null,"abstract":"<div><p>New regulations are promoting the production of biobased bead foams to increase sustainability. In this work, expanded biobased propylene (BioEPP) reinforced with nanoparticles are produced and characterized. Bead foams with apparent densities ranging 24 to 34 kg/m³ and homogeneous cellular structures are obtained with BioEPP and the nanocomposites with nanoclays, while the samples with cellulose nanocrystals show higher densities. The BioEPP bead foams are also molded into parts of 105 kg/m³ to evaluate their compressive strength. Results support that this new bead foam can be a good candidate for the replacement of fossil-based bead foams by a more sustainable alternative.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4331 - 4337"},"PeriodicalIF":5.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Gum Arabic-Pvdf Based Adsorbent and Filter Production for Gray Water Treatment","authors":"Ayşenur Katırcı,&nbsp;Seniyecan Kahraman,&nbsp;Filiz Uğur Nigiz","doi":"10.1007/s10924-025-03669-3","DOIUrl":"10.1007/s10924-025-03669-3","url":null,"abstract":"<div><p>Gray water is a major component of domestic wastewater, containing pollutants such as surfactants, dyes, oils, nitrates, and phosphates. Effective treatment of gray water is critical in terms of increasing water scarcity and sustainable water management. In this study, gum arabic (GA) was used as a low-cost, biocompatible, and functional additive to enhance the properties of polyvinylidene fluoride (PVDF) membranes. Electrospinning was employed to fabricate nanofiber membranes by incorporating GA into PVDF at different weight ratios (1–5 wt%). The membranes were characterized using SEM, FTIR, TGA, and DSC to assess morphological, chemical, and thermal properties. SEM analysis revealed uniform fiber distribution without pilling, and GA addition slightly reduced fiber diameters. Thermal analysis confirmed improved thermal stability and altered degradation behavior with GA. Results showed that the contact angle decreased with GA addition, indicating increased hydrophilicity. Tensile strength increased from 6 MPa to 12.5 MPa at 3 wt% GA. Adsorption experiments for methylene blue (MB), oil, microplastics (MP), and anionic surfactants (LAS) were optimized using response surface methodology (RSM). Filtration tests demonstrated rejection rates of 99% for MB, 87% for oil, and 100% for MP. LAS rejection efficiency increased from 26 to 67.63% at 2 wt% GA. However, adsorption performance remained limited. The results show that the developed PVDF/GA membranes have high potential in the filtration-based treatment of gray water and that this technology can be applied to similar types of wastewater.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4546 - 4569"},"PeriodicalIF":5.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Foaming Mechanism of Polylactide-Based Rigid Polyurethane Foams with Uniform Cell Structures and Enhanced Properties","authors":"Xiaoyu Dong,&nbsp;Honggang Xu,&nbsp;Xiaowei Lyu,&nbsp;Jinghua Du,&nbsp;Junjie Wang,&nbsp;Zhi Liu,&nbsp;Xiaohua Hou,&nbsp;Yunsheng Ding","doi":"10.1007/s10924-025-03666-6","DOIUrl":"10.1007/s10924-025-03666-6","url":null,"abstract":"<div><p>The strategic incorporation of renewable resources in polyurethane foam synthesis emerges as an innovative approach to minimize carbon footprint. Recent advancements in bio-based lactide production and the molecular architecture of polylactide have facilitated the development of high-performance polyurethane foams through the integration of renewable resource. In this study, polylactide (PLA)-based polyols with molecular weights ranging from 500 to 1500 g/mol and functionalities of 2 and 3 were synthesized via the ring-opening polymerization of L-lactide, and were subsequently employed as the sole polyol component in the preparation of bio-based rigid polyurethane foams (RPUFs). The physicochemical properties of the polyols, foaming behavior, as well as the mechanical performance, cellular structure, and thermal properties of the bio-based RPUFs were thoroughly characterized. Results indicated that the reactivity of PLA-based polyols exhibited a positive correlation with their functionality while demonstrating an inverse relationship with their molecular weight. Notably, tPLA500 exhibited optimal reactivity with a viscosity of 1107 mPa·s. The elevated reactivity facilitates the gelling reaction during the foaming process, while the lower viscosity enhances foam expansion. This synergistic effect improves cellular uniformity and the curing process, yielding a bio-based RPUF with intact cellular structure. This optimized morphology enables the bio-based RPUF to achieve a compressive strength of 384 kPa and a thermal conductivity of 0.036 W/(m·K), demonstrating its potential as a high-performance biobased thermal insulation material.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4570 - 4585"},"PeriodicalIF":5.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-starch Polysaccharides from Fruit and Vegetable Waste: Potential and Sustainable Recycling Approaches","authors":"Jaiber Humberto Rodriguez Llanos,&nbsp;Lina Maria Rayo-Mendez,&nbsp;Michel Brienzo","doi":"10.1007/s10924-025-03662-w","DOIUrl":"10.1007/s10924-025-03662-w","url":null,"abstract":"<div><p>Fruit and vegetable wastes represent a rich source of unconventional carbohydrates with applications in pharmaceuticals, packaging, tissue engineering, and other industrial sectors, offering sustainability, cost-effectiveness, health benefits, and support for a circular economy. While common starch serves as the main source of dietary energy, non-starch polysaccharides (NSPs), such as cellulose, hemicellulose, and pectin, have diverse glycosidic bonds and complex architectures that render them indigestible by humans. These NSPs, which constitute the plant cell wall, are valued for their functional properties, including modulation of the gut microbiota and antioxidant activity. This review provides a detailed comparison between NSPs extracted from fruit and vegetable waste and those obtained from conventional sources. We demonstrated that NSPs obtained from food waste have significant advantages in terms of extraction efficiency, cost-effectiveness, and environmental impact, while maintaining essential functional and structural characteristics. Their versatility is reinforced by innovative applications as excipients in drug delivery systems, wound-healing scaffolds, biodegradable packaging, bioadhesives, flocculants, and adsorbents. Additionally, using agro-industrial residues as raw materials reduces dependence on primary resources, minimizes waste generation, and promotes sustainable development. We describe both established and emerging green extraction techniques and correlate the molecular characteristics of NSPs with their performance in pharmaceuticals, tissue engineering, and controlled-release agents. Taken together, these insights reinforce the key role of NSPs derived from fruits and vegetables in advancing a truly circular economy.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4299 - 4330"},"PeriodicalIF":5.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10924-025-03662-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Development of King Cobia Collagen/hydroxypropyl Methylcellulose/polyvinyl Alcohol-Based Carbon Scaffolds for Potential Bone Tissue Engineering Applications","authors":"Rusyda Fajarani,&nbsp;Elly Septia Yulianti,&nbsp;Siti Hanafiah,&nbsp;Yudan Whulanza,&nbsp;Siti Fauziyah Rahman","doi":"10.1007/s10924-025-03657-7","DOIUrl":"10.1007/s10924-025-03657-7","url":null,"abstract":"<div><p>Tissue engineering technology has been developed for bone damage solutions by applying biomaterial-based scaffolds, possessing good biocompatibility and mechanical properties. The use of polymeric biomaterials together with conductive carbon biomaterials can be considered as a potential candidate to increase the mechanical strength and other physicochemical properties of the scaffold. In this research, bone scaffolds were developed using collagen extracted from king cobia fish, hydroxypropyl methylcellulose (HPMC), and poly(vinyl alcohol) (PVA), with the addition of multi-walled carbon nanotubes (MWCNTs) and reduced graphene oxide (rGO) materials. The scaffolds were fabricated using freeze-drying and physicochemically characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, mechanical properties, wettability, porosity, swelling, and degradation rate. The findings indicated that the scaffolds were porous and had interconnected structures with a mechanical strength of about 9 MPa, which is compatible with trabecular bone. The scaffolds also had a high porosity of up to 90%, high swelling up to 300%, and a degradation rate with a mass loss of less than 20% in 28 days. The scaffolds exhibited hydrophilic properties with a water contact angle of less than 90^o. The conductivity characteristics of the scaffolds were evaluated through electrochemical measurements using cyclic voltammetry (CV), resulting in conductive scaffolds characterized by the formation of redox peaks. These results suggest that the fabricated scaffold could be a potential candidate in bone tissue engineering applications.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4526 - 4545"},"PeriodicalIF":5.0,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lignin-based Carbon Nano Onion as Interfacial Modifier To Obtain High-performance Polylactic Acid-Wood Flour Nanocomposites","authors":"Moham Ed Abdur Razzaq,&nbsp;Xianglan Bai","doi":"10.1007/s10924-025-03660-y","DOIUrl":"10.1007/s10924-025-03660-y","url":null,"abstract":"<div><p>Herein, we report high-performance, 100% biobased nanocomposites prepared using a chemical and solvent-free approach. Lignin was used to synthesize oxygen-functionalized carbon nano-onion (CNO) using a Joule heating method. CNO was then co-extruded with polylactic acid (PLA) and wood flour to prepare nanocomposites without the pretreatment of wood or coupling agents. It showed that the addition of CNO can simultaneously improve the tensile strength, tensile modulus, impact strength, and ductility of the composites. Additionally, the CNO-containing composite had enhanced thermal stability, flame retardancy, and reduced water absorption. Our investigation indicates that the superior reinforcement effect observed in the CNO-reinforced composites is attributed to the role of CNO as a coupling agent and interfacial modifier. Turbostratic graphene structure of CNO with amphiphilic surface properties provides both structural integrity and excellent chemical competitiveness. At the same time, the quasi-sphere geometry of nanoparticles offers a high interfacial area and a dimensionless interface.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 10","pages":"4502 - 4525"},"PeriodicalIF":5.0,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}