Journal of Polymer Research最新文献

{"title":"Development of commercial fully bio-based sport utility using jute/hemp bio-epoxy composite: Influence of stacking sequence on the fatigue, thermo-mechanical, vibrational and viscoelastic behavior","authors":"Vinod Ayyappan,&nbsp;Vijay Raghunathan,&nbsp;Jiratti Tengsuthiwat,&nbsp;Sanjay Mavinkere Rangappa,&nbsp;Suchart Siengchin","doi":"10.1007/s10965-025-04428-7","DOIUrl":"10.1007/s10965-025-04428-7","url":null,"abstract":"<div><p>Eco-friendly composites are a key research focus due to environmental concerns, with natural fibers being explored as replacements for synthetic materials. This study aimed to develop and evaluate composites using commercially available jute and hemp fibers with a bio-epoxy matrix. Although there are various studies that report the mechanical properties of jute-hemp composites, no work has analyzed the complex dynamic mechanical, thermo-mechanical, fatigue, and vibrational properties of these bio-based jute-hemp bioepoxy composites. In this study, composites were developed using commercially available jute and hemp fibers, with bio-epoxy (SR-56) as the matrix to enhance eco-friendliness. Thermomechanical analysis revealed that the hemp-based composite had the lowest thermal expansion (0.12%) in the glass transition region. Dynamic mechanical analysis, performed under dual and single cantilever modes, showed that the jute-based composite exhibited the highest Tan δ value. The composite with hemp as the skin and jute as the core demonstrated intermediate values, with controlled Tan δ and complex modulus (E*). The E* of the HJH composite was 3.5 GPa in dual cantilever mode and 2.1 GPa in single cantilever mode due to localized stress concentration. Fatigue analysis showed an increase in stiffness from 30.04 N/mm at 40,000 cycles to 31.61 N/mm at 60,000 cycles before microcracks appeared at 90,000 cycles. Free vibration analysis indicated that composites reinforced with lower stiffness fibers had higher damping across all modes, with the JJJ composite exhibiting the highest damping ratios in mode-1 (0.56161), mode-2 (0.1664), and mode-3 (0.074891). These results demonstrate the potential of jute-hemp bio-epoxy composites for lightweight structural applications, demonstrated by the development of a bicycle mudguard using the optimal stacking sequence. </p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135522","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":"Polybenzimidazole enhance sulfonated polyimide composite proton exchange membrane with acid–base interaction","authors":"Feiyan Lu,&nbsp;Xiangkun Dong,&nbsp;Jingci He,&nbsp;Chenwei Hu,&nbsp;Wenqi Chen,&nbsp;Si Hu,&nbsp;Yu Liu,&nbsp;Qingting Liu,&nbsp;Xudong Fu,&nbsp;Haodong Tan,&nbsp;Anmin Huang","doi":"10.1007/s10965-025-04433-w","DOIUrl":"10.1007/s10965-025-04433-w","url":null,"abstract":"<div><p>To mitigate the damage to the mechanical strength and stability of sulfonated polyimide (SPI) proton exchange membranes caused by sulfonic acid groups, polybenzimidazole (PBI) was introduced into the SPI skeleton to prepare composite membranes. The incorporation of rigid structure enhanced the mechanical strength of the SPI/PBI composite membranes. Meanwhile, the acid–base interactions between the imidazole rings and sulfonic acid groups formed a crosslinked structure between the polymer chains, significantly improving the thermal stability, oxidative stability, and dimensional stability of the SPI/PBI composite membranes. Specifically, the tensile strength of the 3SPI/PBI composite membrane reached 106 MPa, which was 3.23 times that of pure SPI membrane. Fortunately, the SPI/PBI composite membranes maintained good proton conductivity in both high-humidity and low-humidity environments, and it was able to maintain stable proton conductivity at 60 °C/98% RH. Theoretical calculations revealed that the binding energy between the SPI and PBI structural units reached -37.41 kcal mol⁻¹, indicating a significant interaction.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140259","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 characterization of low-κ co-polyimide films","authors":"Erlin Tian,&nbsp;Xiaofan Qin,&nbsp;Fufeng Yan,&nbsp;Jing Chen,&nbsp;Haiyang Dai,&nbsp;Renzhong Xue,&nbsp;Tingting Zhang,&nbsp;Tao Li","doi":"10.1007/s10965-025-04420-1","DOIUrl":"10.1007/s10965-025-04420-1","url":null,"abstract":"<div><p>In this study, five co-polyimide (co-PI) films were synthesized through copolymerization using 6FDA and PMDA as dianhydride monomers paired with ODA diamine. By systematically varying the 6FDA/PMDA molar ratio, we successfully regulated the microstructural characteristics of co-PI films, particularly their free volume and molecular chain rigidity. The structure–property relationships were comprehensively investigated using positron annihilation lifetime spectroscopy (PALS), with special emphasis on thermal, dielectric, and mechanical performance. Notably, the glass transition temperature (Tg) exhibited a progressive decrease from 384.9 ℃ for PI-1 to 307.8 ℃ for PI-5. This thermal behavior is related to the increase of free volume and the decrease of molecular chain rigidity caused by higher 6FDA content. Correspondingly, the dielectric constant (<i>k</i>) at 10⁴ Hz decreased from 3.55 to 2.46 across the series, demonstrating that enhanced free volume effectively reduces dielectric polarization. However, this microstructural modification came at the expense of mechanical integrity, as evidenced by the descending tensile strength trend with increasing 6FDA proportion. These findings demonstrate an effective strategy for developing high-performance polyimide films combining low dielectric constant with balanced thermal and mechanical properties.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135511","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":"Effect of SiO2 nanoparticles on the melt-crystallization kinetics and mechanical behavior of polypropylene","authors":"Ahmad A. Joraid,&nbsp;Mahdi A. Al-Maghrabi,&nbsp;Ali A. Alshehry","doi":"10.1007/s10965-025-04424-x","DOIUrl":"10.1007/s10965-025-04424-x","url":null,"abstract":"<div><p>This study investigates the effect of SiO₂ nanoparticles on polypropylene's (PP) crystallization kinetics and mechanical properties. SiO2 nanoparticles notably improve PP's thermal and mechanical performance by serving as nucleating agents, especially at lower concentrations. Differential scanning calorimetry (DSC) revealed that SiO₂ nanoparticles delayed crystallization onset, prolonged induction times, and altered nucleation behavior. Using the Johnson–Mehl–Avrami-Kolmogorov (JMAK) model, it was observed that nanoparticles increased crystallization rates through enhanced heterogeneous nucleation. Conversely, aggregation restricted molecular mobility at higher nanoparticle loadings, adversely influencing crystallization and mechanical properties. Mechanical tests indicated that 0.5 wt% SiO₂ significantly improved tensile strength (33.58 MPa) and elongation at break (41.3%). Excessive SiO₂ loading led to nanoparticle agglomeration, reducing mechanical performance due to diminished stress transfer efficiency. Scanning electron microscopy (SEM) and Raman spectroscopy confirmed uniform nanoparticle dispersion and strong nanoparticle-polymer interactions at lower concentrations, whereas higher concentrations induced phase separation and structural inconsistencies. Furthermore, activation energy calculations using isoconversional methods, including Ozawa–Flynn–Wall (OFW) and Kissinger–Akahira–Sunose (KAS) models, demonstrated a progressive increase in activation energy with crystallization progress, indicating diffusion-limited crystallization at higher SiO₂ concentrations. The Mo model further confirmed SiO₂ nanoparticles' ability to lower the cooling rate necessary for achieving specific crystallinity levels. Overall, these findings highlight the potential of SiO₂ nanoparticles as effective additives for enhancing PP's mechanical performance and crystallization kinetics at optimal concentrations. The study provides valuable insights into the role of nanoscale fillers in polymer engineering, paving the way for advanced polypropylene-based nanocomposites with tailored thermal and mechanical properties.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131482","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":"Synthesis of new phosphorus-containing oligoester methacrylates by using aliphatic and aromatic spacers","authors":"A. K. J. Al-Hamzawi,&nbsp;B. A. Buravov,&nbsp;S. M. Solomakhin,&nbsp;L. Yu. Donetskova,&nbsp;O. O. Tuzhikov,&nbsp;O. I. Tuzhikov","doi":"10.1007/s10965-025-04388-y","DOIUrl":"10.1007/s10965-025-04388-y","url":null,"abstract":"<div><p>A novel phosphorus-containing oligoester methacrylates (FOEMs) incorporating aliphatic and aromatic spacers were successfully synthesized in two stages. At the first stage, a diester-containing intermediate was produced by allowing phosphorus oxychloride to react with glycidyl methacrylate (GMA), subsequently, at the second stage the diester intermediate was added to diepoxide resins (E-181 and ED-20). The structures of oligoester methacrylates (OEMs) have been investigated intensively by using FTIR, GC/MS, STA, NMR and epoxy number (epoxide group content), where the outcomes revealed that the disappearance of epoxy groups was completely achieved, which is a result of the oxirane ring-opening reaction and the appearance of ester groups. The results confirmed the successful synthesis of FOEMs and were consistent with their predicted chemical structures. The obtained FOEMs showed excellent curing ability by free radical polymerization mechanism under conditions of both UV and thermal peroxide initiation. Polymerization processes were analyzed by using differential scanning calorimetry (DSC) and changes in dielectric analysis (DEA). The DSC results indicate that the presence and structure of the spacer influence on curing rate as well as on thermal effects of both initiation methods. DEA studies established that the blending of aliphatic spacer into the oligomer structure has little effect on photocuring rate, but the aromatic spacer increases the curing rate compared with FOEM without a spacer.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117666","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":"Study on the properties of bio-based nylon 56 composites with different basalt fiber content","authors":"Yunsheng Chong,&nbsp;Wanjing Zhang,&nbsp;Jinming Liu,&nbsp;Jingchen Chu,&nbsp;Liyan Wang,&nbsp;Yanming Chen,&nbsp;Pengfei Lang,&nbsp;Yanyan Lin,&nbsp;Meng Wang","doi":"10.1007/s10965-025-04426-9","DOIUrl":"10.1007/s10965-025-04426-9","url":null,"abstract":"<div><p>In order to solve the problems of strong hygroscopicity and poor dimensional stability of bio-based nylon 56, physical and chemical modification methods can be used to modify bio-based nylon 56 composites. In this paper, basalt fiber (BF) reinforced bio-based nylon 56 composites with different contents were prepared by melt blending method, and their structure, mechanical properties and thermal properties were characterized. Studies show that bio-based nylon 56/BF composite materials were less dense than 1.540 g/cm³, Studies showed that the density of the bio-based nylon 56/BF composites was less than 1.540 g/cm³, BF was tightly wrapped by bio-based nylon 56 matrix resin, and the interfacial bonding between them was strong. Compared with pure bio-based nylon 56, the mechanical properties of bio-based nylon 56/BF composites were significantly improved by the addition of BF. When BF was added by 50%, the bending strength was 214.4 MPa, the flexural modulus was 10,117 MPa, which increased by 138.67% and 345.16%, respectively. The impact strength was 12.5 kJ/m², which increased by 316.6%, the water absorption was 0.84%, which decreased by 75%, and the shrinkage was 0.01%, which decreased by 98.01%. As the increase of basalt fiber content, the relative crystallinity of the composites can reach 9.03%, and the thermal decomposition temperature increases slightly. The bio-based nylon 56/BF composite materials have low density and excellent mechanical properties, and BF gives bio-based nylon 56 resins a high added value for a wide range of applications such as automobile engine covers and wind turbine blades.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108418","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":"Comparative study of the morphology, water diffusion, thermal, mechanical, and electrical properties of bamboo fiber/PP/MAPP and areca fiber/PP/MAPP composites","authors":"Madhavi Sridhar,&nbsp;Madhushri Attihalli Venkatachalaiah,&nbsp;Jobish Johns","doi":"10.1007/s10965-025-04425-w","DOIUrl":"10.1007/s10965-025-04425-w","url":null,"abstract":"<div><p>The present work compares the moisture diffusion coefficients, mechanical properties such as tensile, flexural and impact strength of both areca and bamboo reinforced polypropylene composites. These blends were coupled with Maleic Anhydride Polypropylene (MAPP) to enhance the mechanical, thermal and electrical properties of prepared composites. Inclusion of MAPP to composites reduces the water intake and hence decreases the diffusion coefficients. The entry of water into the natural fiber/ polymer blends plays a very important role in some of the applications such as construction, aerospace and marine. Diffusion coefficients (D) of both bamboo and areca reinforced polypropylene composites were determined and compared with the MAPP coupled composites. SEM analysis was used to compare the structural differences of the composite before and after it was exposed to water. Comparison of the physical characteristics between MAPP coupled areca fiber / polypropylene and bamboo fiber / polypropylene composites helps us to choose a suitable blend for a specific application.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108439","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":"Feasibility study of micro-machining on micro-EDM for PMMA/MWCNT/Ag hybrid nanocomposites: synthesis and characterization","authors":"Akash Shukla,&nbsp;Sanketsinh Thakor,&nbsp;Prince Jain,&nbsp;Jaivik Pathak,&nbsp;Anand Joshi","doi":"10.1007/s10965-025-04423-y","DOIUrl":"10.1007/s10965-025-04423-y","url":null,"abstract":"<div><p>The paper focuses on the synthesis, characterization, and machine learning-based property prediction of a hybrid nanocomposite consisting of polymethyl methacrylate (PMMA), multi-walled carbon nanotubes (MWCNTs), and silver nanoparticles (AgNPs). The nanocomposite was synthesized by solution mixing, which resulted in uniform dispersion of fillers. Characterization techniques confirmed the properties of the material: X-ray diffraction (XRD) showed crystalline structures with sharp peaks for MWCNT at 2θ = 26.17° and Ag at 2θ = 37.7°, which confirmed the successful integration of the filler, while SEM showed uniform microstructure and effective micromachining. EDS analysis confirmed elemental homogeneity, with carbon, oxygen, and silver at 61.54 wt%, 34.44 wt%, and 4.02 wt%, respectively. The dielectric measurements showed specific trends. The dielectric constant was 6 at a low frequency of 20 Hz for 0.1 wt.% Ag content, mainly due to interfacial polarization. The AC conductivity was highly increased with increased Ag content; the highest Ag content considered was 0.5 wt.%. This confirmed that charge mobility was improved. Machine learning models, including Extra Trees, XGBoost, and CatBoost, predicted dielectric properties with great accuracy; Extra Trees had R² = 0.9999 with mean squared error of zero and MAE of 0.0008. The results indicate a promising advanced material application for the PMMA/MWCNT/Ag nanocomposite. Nonetheless, its brittleness calls for further improvements in mechanical properties, further emphasizing the application of machine learning in optimizing material design.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108498","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":"Study on the non-isothermal crystallization kinetics of PVC/Nano SiO2-TiO2 composite resin by DSC","authors":"Un-Hui Jang,&nbsp;Gun-Se Jo,&nbsp;Pyong-Hun Kim","doi":"10.1007/s10965-025-04401-4","DOIUrl":"10.1007/s10965-025-04401-4","url":null,"abstract":"<div><p>The study of the crystallization process and thermal kinetics using various analytical tools such as DSC analysis can provide a reasonable processing condition for different resin products and further improve their properties. Here, we investigated the non-isothermal crystallization kinetics of PVC/Nano SiO₂-TiO₂ composites prepared by mixing SiO₂ and TiO₂ nanoparticles with PVC resin via differential scanning calorimetry(DSC). DSC analysis under different cooling rates confirmed that the crystallization of PVC Nano-composites varied with the cooling rate and with the content of Nano SiO₂ and TiO₂ nanoparticles. Non-isothermal crystallization kinetics analysis was carried out using DSC analysis data, well-known Avrami equation, Ozawa equation and Mo equation. The model-free method gives the activation energy △E of the crystallization process. It can be seen that the crystallization behavior of PVC/Nano SiO₂-TiO₂ composite with 3–5% SiO₂ and TiO₂ nanoparticles is good. These PVC Nano-composites can be used as a belt material for manure handling in chicken plants and as a raw material for plastic clothing for the manufacture of protective clothing.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084966","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":"Morpholino-based covalent organic framework as an effective adsorbent for removal of direct scarlet 4BS and CO2 adsorption","authors":"Ali Nahidinejad,&nbsp;Mohammad Dinari","doi":"10.1007/s10965-025-04422-z","DOIUrl":"10.1007/s10965-025-04422-z","url":null,"abstract":"<div><p>Covalent organic frameworks (COFs), as a subclass of crystalline and porous organic polymers, have extraordinary features which privileges the possibility of using them for various applications. In this research, a novel class of <i>N</i>-rich COF based on morpholine and triazine ring was synthesis and evaluating its applications in CO₂ adsorption and efficient removal of direct scarlet 4BS as organic dye. First, 2,4-dihydrazino-6-morpholino-1,3,5-triazine as diamine monomer and 2,4,6-tris-(2-methoxy-4-formyl-phenoxy)-1,3,5-triazine as a trialdehyde monomer were synthesized with the ability to condense with each other to create linkages containing carbon–nitrogen double bonds in the framework by solvothermal method. The chemical structurer, morphology, thermal stability, crystallinity, porosity, surface area, type, and amount of surface charge, etc. were examined using FT-IR, TGA, DTG, BET, PXRD, Zeta potential analysis, FE-SEM, EDX mapping analysis, and TEM techniques. During the application evaluation stage, the CO₂ gas adsorption capacity of prepared COF at a pressure of approximately 1 bar at room temperature was 21 mg.g⁻¹. Additionally, the framework demonstrated significant capacity for the removal of direct scarlet 4BS under optimal conditions with 600 ppm of adsorbate and 4 mg of prepared COF. By examining the adsorption isotherms and kinetic models, the nature and mechanism of dye removal were better understood. The results followed the Langmuir model and Pseudo-second-order, confirming the chemical adsorption of wastewater pollutant on the framework and the significance of the adsorbate`s adsorption step onto the adsorbent`s site.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"32 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084965","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}