Journal of Polymer Research最新文献

{"title":"Experimental investigation on mechanical and vibrational analysis of kevlar/jute fiber stacked titanium sheet-based metal fiber laminates","authors":"K Gnanasekaran,&nbsp;Karuppasamy Arunkumar,&nbsp;Munusamy Rajesh,&nbsp;Tamer Saraçyakupoğlu,&nbsp;P Loganathan,&nbsp;R Vijayakumar,&nbsp;S Ramprakash,&nbsp;P Vijayabalan","doi":"10.1007/s10965-025-04577-9","DOIUrl":"10.1007/s10965-025-04577-9","url":null,"abstract":"<div><p>The aim of this study is to assess the effect of stacking sequences involving Ti sheet/Kevlar/jute woven fabric on the mechanical and vibration characteristics of hybrid stacking metal fiber laminates (FMLs). Composite multi stacks, namely, Pure Kevlar, Pure Jute, and multi-stacked with Ti sheet/Kevlar/jute woven fabric, were fabricated through hand layup method involves seven layers of fibre and two outer thin Ti sheet layers. The findings demonstrated that the Kevlar composite (Ti2K9) shows a higher tensile strength (318 MPa), Impact Energy (10.8 J) and Flexural Strength (337 MPa) than the other metal fiber laminates (FMLs) as the Kevlar composite has low wettability and increased strength. Interestingly, Ti2K5J4 tensile strength (273 MPa), flexural strength (312 MPa) and Impact Energy are Ti2K5J4 (273 9.5 J) higher than the other type II and III MFL.Ti2K5J4 obtained a high natural frequency and damping ratio compared to the other type II and Type III MFL. Typically obtained damping ratio of 0.00811 and corresponding natural frequency 712.12 Hz of mode-3. Ti2K9 shows high mechanical and natural frequency characteristics, and Ti2J9 shows high damping ratio characteristics. Ti2K5J4 obtained good mechanical and vibration characteristics.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934645","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":"CoFe₂O₄/SWPS doped with silver bromide nanoparticles prepared from waste polystyrene for efficient congo red adsorption","authors":"Farzaneh Naghdi Dizgah,&nbsp;Roya Nayebi,&nbsp;Abdollah Fallah Shojaei","doi":"10.1007/s10965-025-04539-1","DOIUrl":"10.1007/s10965-025-04539-1","url":null,"abstract":"<div><p>In this study, an adsorption method was used to recover Congo red from an aqueous solution employing a new type of nano adsorbent, the CoFe₂O₄/SWPS/AgBr nanocomposite. FT-IR, XRD, SEM, and EDS were used to characterize the nanocomposite, which was synthesized using waste sulfonated polystyrene via a co-precipitation technique. The effects of pH, concentration, amount of adsorbent, contact time, pH_PZC, and adsorbent recovery on the removal of Congo red were investigated. The optimal parameters for the adsorption studies were investigated. The maximum adsorption capacity (q_max) was 588 mg/g, and the adsorption data were analyzed using the Freundlich and Langmuir isotherms. The results demonstrated that the adsorption process followed the Langmuir isotherm, indicating monolayer and homogeneous adsorption. Kinetic studies revealed that the chemical adsorption of Congo red is best described by the pseudo-second-order model. The efficacy of the nanocomposite with varying concentrations of silver bromide (5, 12.5, and 20 wt%) in removing Congo red was also examined. The CoFe₂O₄/SWPS nanocomposite with 12.5 wt% AgBr showed the highest removal efficiency, achieving a 95% removal rate. The efficiency of the nanocomposite was further enhanced by reusing it up to six times, maintaining a removal of over 90%.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144929396","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":"Compatibilization effect of nanosilica on polypropylene/polystyrene immiscible blend","authors":"Jingru Liu,&nbsp;Jiurui Li","doi":"10.1007/s10965-025-04566-y","DOIUrl":"10.1007/s10965-025-04566-y","url":null,"abstract":"<div><p>Inorganic nanoparticles are often utilized to compatibilize immiscible polymer blends. In current work, the effect of the introduction of fumed silica nanoparticles with different surface properties on the viscoelasticity, phase morphology and mechanical properties of polypropylene/polystyrene (PP/PS) blend with 80/20 weight ratio was investigated. Scanning electron microscopy (SEM) characterization revealed that hydrophilic nanosilica was confined in the PS dispersed phase while hydrophobic nanosilica was located mostly in the PS phase and partially at the interface between PP and PS phases. This agreed well with the thermodynamic predictions using the wetting parameter. SEM and optical microscopy observations found that nanosilica only performs the function of morphological compatibilization in the PP/PS immiscible blend, which is reflected in refining and stabilizing the blend morphology. The morphological compatibilization effect is realized by the coalescence suppression of the PS droplets due to the hindered chain motion originating from the selective distribution of nanosilica in PP/PS blend. Dynamic rheological results indicated that nanosilica could not promote significant interfacial tension reduction due to the lack of effective entanglement with polymer components, followed by further deteriorated toughness of nanoparticle filled blend. These results provide a comprehensive understanding of the compatibilization effect of nanosilica on PP/PS immiscible blend.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923099","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":"High-temperature dielectrics with ultrahigh electrical breakdown strength prepared by epoxy-benzoxazine copolymerization","authors":"Lihua Zhao,&nbsp;Yu Chen,&nbsp;Zixuan Xia,&nbsp;Haidong Chen,&nbsp;Haowen Yuan,&nbsp;Zi Wang,&nbsp;Junwen Ren,&nbsp;Qichao Ran,&nbsp;Shenli Jia,&nbsp;Shuai Yang","doi":"10.1007/s10965-025-04558-y","DOIUrl":"10.1007/s10965-025-04558-y","url":null,"abstract":"<div><p>Epoxy with high mechanical and insulation performance has promising applications for the crucial components of power equipment. However, with the rapid development of equipment that has ever higher voltage, power density, and a more compact size, achieving superior heat-resistant and insulation in epoxy remains a significant challenge. Here, we prepare a copolymerized resin using diphenylmethane diamine-type benzoxazine (BOZ-M) as a modifier and curing agent for epoxy. Attributed to the rigid conjugated groups of BOZ-M, the molecular chain rigidity and cross-linking density of the copolymerized resin are improved, resulting in remarkable mechanical strength (63.31 MPa) and glass transition temperature (<i>T</i>_g=215.81 ℃), respectively. The optimization of the molecular structure decreases the free volume of the copolymer resin, resulting in enhanced stability of high-temperature dielectric performance; at the same time, calculations based on the density functional theory (DFT) and experimental characterizations revealed that introducing a multitude of shallow traps to the epoxy can effectively enhance the migration of charge carriers, co-contributing to a substantial improvement of the electrical breakdown strength of the copolymer resin (139.65 kV/mm). In addition, a comparative study was conducted on ANFs/Epoxy composites, demonstrating that the current method is more effective in enhancing the same performance without a complex filler treatment process, thus making it suitable for industrial-scale applications.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144920492","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":"A study on the weldability of tough alginate–poly(acrylic acid) hydrogels","authors":"Hong Tra Le,&nbsp;Van Tron Tran","doi":"10.1007/s10965-025-04542-6","DOIUrl":"10.1007/s10965-025-04542-6","url":null,"abstract":"<div><p>Hydrogels have emerged as a promising class of next-generation materials for numerous applications in biomedical and engineering fields. Recently, there has been significant focus on developing effective techniques for shaping these materials into complex patterns for practical uses. In this research, we successfully develop a novel welding technique for effectively constructing hierarchical and complex structures of tough hydrogels prepared using alginate (Alg) and poly(acrylic acid) (PAAc) polymers via ion diffusion and thermo-polymerization steps. In this technique, the hydrogels are efficiently welded via a straightforward process that includes three main steps: immersing in a highly concentrated NaCl aqueous solution, washing in water, and submerging in an Alg solution. As demonstrated, the synthesized hydrogels exhibit excellent mechanical properties with the highest Young’s modulus, tensile strength, and work of extension of ~ 3.15 MPa, ~ 1.37 MPa, and ~ 2.85 MJ·m⁻³, respectively. The gel layers are adequately bonded via the developed technique, as confirmed by field-emission scanning electron microscopy (FE-SEM) images and energy dispersive X-ray (EDX) analysis. Remarkably, Taguchi and Analysis of Variance (ANOVA) methods are employed to optimize the welding process, aiming to achieve the maximum adhesive strength. The welded hydrogels, fabricated using the optimal process with immersion durations of 210 min, 20 min, and 210 min for each main step, respectively, exhibit remarkable adhesive performance with shear strength, tensile strength, and peel strength of ~ 221.84 kPa, ~ 295.05 kPa, and ~ 109.89 N·m⁻¹, respectively. Additionally, a complex gel mesh structure is successfully created via the developed welding process. With these obtained characteristics, the present developed technique is expected to strengthen the real-world applications of Alg/PAAc-based hydrogels significantly.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914837","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":"CO2-based environment-friendly flexible UV light curing polyurethane acrylate","authors":"Ziming Lun,&nbsp;Lina Song,&nbsp;Jiaoyan Ai,&nbsp;Tulian Zhong,&nbsp;Wenqi Xian,&nbsp;Baohua Liu","doi":"10.1007/s10965-025-04554-2","DOIUrl":"10.1007/s10965-025-04554-2","url":null,"abstract":"<div><p>A series of CO₂-based UV cured polyurethane acrylate with good flexibility and mechanical strength were prepared using polycarbonate diol (PECD), diphenylmethane diisocyanate (MDI), hydroxyethyl acrylate (HEA), and tetrahydrofuran acrylate (THFA) as raw materials. Simultaneously compared with traditional polyester (PCLD)-based and polyether (PPG)-based UV cured polyurethane acrylates. By analyzing the infrared spectra of prepolymer and PECD-PUA, the generation of characteristic absorption peaks indicates the successful synthesis of PECD-PUA. In addition, compared with the uncured film, the carbon carbon double bond absorption peak (810 cm^-1) of the cured film disappeared, indicating that the double bond had undergone a reaction. The mechanical properties, hardness, water contact angle, and solvent absorption properties of UV-cured polyurethane were studied. The results show that the CO₂-based material PECD has excellent properties, the tensile strength can reach 9.83 MPa, and the elongation of break reach 82.92% and the cured UV-PECD-PU film has high hardness (pencil hardness: HB) All cured films exhibited excellent thermal stability (more than 250 ℃) through TGA analysis. This paper synthesized environmentally friendly CO₂-based photopolymerization polyurethane, providing direction for the resource utilization of carbon dioxide-based materials.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914836","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":"Recycling of waste: a light review on the application of egg shell waste in composite formation and the characterization of crushed egg shell waste as filler material for epoxy resin","authors":"Joshua O. Atiba,&nbsp;Gabriel O. Edah,&nbsp;Ojo S. I. Fayomi","doi":"10.1007/s10965-025-04541-7","DOIUrl":"10.1007/s10965-025-04541-7","url":null,"abstract":"<div><p>This study investigates the prospects of using raw crushed eggshell waste (CES) as a sustainable filler in epoxy resin composites, extending beyond the limitations of the literature by addressing macroscopic particles (&gt; 100 μm) without calcination. The 3%, 6%, and 9% CES loading composites were fabricated via hand lay-up and were evaluated for mechanical, microstructural, and durability performance. Results showed 60% enhancement in hardness (37.5 to 60 HRB) and 12.4% enhancement in tensile strength (9.7 to 10.9 N/mm²) at 9% CES, owing to improved load distribution and interfacial adhesion. Microstructural investigations (SEM/EDS, XRD) confirmed CaCO₃ incorporation and also indicated agglomeration problems with higher loading. Chemical resistance tests indicated improved resistance to acid at 9% CES (30 mg loss in weight after 72 h), while water absorption decreased by 28.6% when compared to pure epoxy. Statistical optimization using Response Surface Methodology (RSM) indicated 9% CES to be optimum for minimum degradation. The study underscores untreated CES’s dual potential as reinforcement and green filler, offering reduced density (11.5% lower than epoxy) and enhanced durability in corrosive or wet environments. The findings advocate CES-epoxy composites as eco-friendly alternatives to conventional materials, in alignment with global waste valorization and resource efficiency goals.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909669","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":"Fabrication of polybutadiene modified waterborne polyurethane coatings with excellent anti-smudge characteristics","authors":"Bingbing Zhao,&nbsp;Dachao Wang,&nbsp;Peng Cai,&nbsp;Jing Huang,&nbsp;Anyu Chen,&nbsp;Xiaoyan Gao,&nbsp;Haoyang Li,&nbsp;Lingli Ni","doi":"10.1007/s10965-025-04544-4","DOIUrl":"10.1007/s10965-025-04544-4","url":null,"abstract":"<div><p>Low cost and environmental friendly anti-smudge coatings are highly desirable because of their repel ability to numerous contaminants. Herein, a fluorine-free and transparent anti-smudge waterborne polyurethane coating (WPUH) was constructed via the copolymerization of hydroxyl-terminated polybutadienes (HTPB) into polyurethane backbones. The effect of HTPB content on the particle size and storage stability of the synthesized WPUH emulsions was studied using dynamic light scattering (DLS). The micro- and nano-structures of the resulting coatings were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Furthermore, the surface of the resulted WPUH coatings showed excellent anti-smudge performance toward various liquids, such as water, ethanol, and mark pen oil, etc. In particular, the WPUH20 coating (with 20 wt% of HTPB) exhibited a water contact angle of 72 ± 3 ° and maintained its anti-smudge performance even after 100 abrasion cycles. This work provides an attractive strategy for preparation of cost-effective and environmental friendly WPU anti-smudge coatings, which is promising for widespread applications.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909670","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":"The role of entropy in interfacial interactions between polymer-grafted reduced graphene oxide and acrylate copolymers","authors":"Leila Noein,&nbsp;Mehdi Razzaghi-Kashani","doi":"10.1007/s10965-025-04532-8","DOIUrl":"10.1007/s10965-025-04532-8","url":null,"abstract":"<div><p>This research examines the role of entropy in interfacial interactions between poly (butyl acrylate) (PBA) chains grafted onto chemically reduced graphene oxide (rGO) and the surrounding acrylate copolymer matrix. Grafted particles were prepared via atom transfer radical polymerization (ATRP) and subsequently dispersed in butyl acrylate-methyl methacrylate copolymer matrices. Based on theoretical predictions, the number-average molecular weight of the copolymer matrices (P) and grafted chains (N), as well as the grafting density of PBA, were controlled to achieve a P/N ratio of about one and grafting density of 0.023 chains/nm², as evaluated by gel permeation chromatography and thermal gravimetry, respectively. To evaluate the role of entropic interaction between PBA-grafted particles and the copolymer matrix at equal interfacial adhesion energy, the content of butyl acrylate in the copolymer was varied in the radical polymerization, so that the molar ratio of butyl acrylate to methyl methacrylate in the copolymer was 50:50, 60:40, and 70:30, respectively. Polymer dynamics measured by dynamic-mechanical-thermal analysis and dielectric analysis revealed that increasing the butyl acrylate content in the copolymer matrix significantly improves the interfacial interaction between rGO and the polymer matrix. This was explained by the similarity in flexibility and entropy matching between the matrix and grafted chains, which resulted in enhanced chain interlocking and entanglement at the interface. The nanocomposite containing the copolymer matrix with a 70:30 molar ratio exhibited the highest positive shift in glass transition temperature (T_g) upon incorporating polymer-grafted rGO. Additionally, the dielectric loss analyses using the HN model confirmed that the most significant increase in relaxation time relative to the pure matrix belongs to the same nanocomposite.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897197","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":"Structure–property of copolyesters with potential applications in optical communication","authors":"Jun Pan,&nbsp;Xiuchuan Huang,&nbsp;Lesly Dasilva Wandji Djouonkep","doi":"10.1007/s10965-025-04512-y","DOIUrl":"10.1007/s10965-025-04512-y","url":null,"abstract":"<div><p>A series of novel biobased ternary copolyesters (P₁–P₄) was synthesized via two-step melt polycondensation process using bis(2-(methoxycarbonyl)phenyl) terephthalate (PMPE), derived from methyl salicylate combined with varying aliphatic chain diols including 1,4-butanediol (BDO), 1,6-hexanediol (HDO), 1,8-octanediol (ODO), and 1,4-cyclohexanedimethanol (CHDM). Chemical structures were characterized using Fourier-transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (¹H NMR), while molecular weights were confirmed via gel permeation chromatography (GPC), and thermomechanical properties were investigated via differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA). The copolyesters exhibited molecular weights (<i>M</i>_w) ranging from 3.9–4.1 × 10⁴ g/mol and PDI from 2.17–2.31. Glass transition temperatures (<i>T</i>_g) varied from 49–88 °C, influenced by the incorporation of stable aliphatic and cyclic chain segments within the polyester backbone, with 5% (<i>T</i>_{d, 5%}) and maximum (<i>T</i>_{d, max}) decomposition temperatures varying between 329–347 °C and 396–412 °C, respectively. Tensile testing showed strength values ranging from 1030–1740 MPa, with yield strengths of 47–58 MPa, comparable to polyethylene terephthalate (PET). Interestingly, the copolyesters exhibited excellent optical transparency with a transmission rate of 88% and low absorbance peaks (0.4–1.1%), indicating strong potential for optical communication applications. Although, biodegradation over 15 weeks of incubation showed modest degradation rates of 2.74–4.03%, ecotoxicity assessment using earthworms confirmed low toxicity with survival rates exceeding 80% even at saturated copolyester concentrations (2000 mg/kg). These findings elucidate the structure–property relationships of methyl salicylate-based copolyesters as promising sustainable alternatives to conventional PET in optical communication technologies.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144888134","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}