Journal of Polymer Science最新文献_第10页

Metal-Free, Sustainable Synthesis of Polycaprolactone-Based Graft Copolymers Through Tandem ROP and ATRP at Ambient Temperature 室温下通过串联ROP和ATRP合成无金属、可持续的聚己内酯基接枝共聚物

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-11-01 DOI: 10.1002/pol.20251012

Zeynep Tulumcu, Ozge Zor, Mustafa Ciftci

{"title":"Metal-Free, Sustainable Synthesis of Polycaprolactone-Based Graft Copolymers Through Tandem ROP and ATRP at Ambient Temperature","authors":"Zeynep Tulumcu, Ozge Zor, Mustafa Ciftci","doi":"10.1002/pol.20251012","DOIUrl":"https://doi.org/10.1002/pol.20251012","url":null,"abstract":"<div>\u0000 \u0000 A metal-free and sustainable strategy for the synthesis of graft copolymers was developed by combining ring-opening polymerization (ROP) of ε-caprolactone with atom transfer radical polymerization (ATRP) at ambient temperature. Polycaprolactone (PCL) backbones bearing initiating sites were first prepared and subsequently employed for ATRP of two different vinyl monomers, methyl methacrylate (MMA) and poly(ethylene glycol) methyl ether acrylate (PEGA). This tandem polymerization approach enabled the controlled preparation of well-defined PCL-g-PMMA and PCL-g-PPEGA graft copolymers without the use of transition-metal catalysts. The successful incorporation of side chains was confirmed by 1H-NMR and FT-IR spectroscopy, while molecular weight distributions were evaluated by gel permeation chromatography (GPC). Differential scanning calorimetry (DSC) revealed the influence of grafting on the thermal properties of the copolymers, and water contact angle (WCA) measurements demonstrated surface wettability changes associated with PEGA incorporation.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"497-502"},"PeriodicalIF":3.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cover Image, Volume 63, Issue 21 封面图片，第63卷，第21期

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-11-01 DOI: 10.1002/pola.31808

André H. Gröschel, Alex J. Plajer, Meike N. Leiske, Johannes C. Brendel

引用次数: 0

Recent Advances in Hydrogel-Based Strategies for Promoting Wound Healing 基于水凝胶促进伤口愈合策略的最新进展

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-11-01 DOI: 10.1002/pol.20250803

Ling Tu, Xiao Luo, Lingfeng Jiang, Menglin Luo, Wenjun Liu, Xin Xie, Lu Zhao, Ling Li, Maochun Zhang

{"title":"Recent Advances in Hydrogel-Based Strategies for Promoting Wound Healing","authors":"Ling Tu, Xiao Luo, Lingfeng Jiang, Menglin Luo, Wenjun Liu, Xin Xie, Lu Zhao, Ling Li, Maochun Zhang","doi":"10.1002/pol.20250803","DOIUrl":"https://doi.org/10.1002/pol.20250803","url":null,"abstract":"Wound healing is a dynamic and continuous process. Hydrogels, as three-dimensional polymeric networks, have emerged as versatile platforms for tissue repair due to their tunable mechanical properties, environmental responsiveness, and diverse application forms. Despite extensive research, the mechanisms by which hydrogel properties regulate cellular interactions and tissue regeneration remain poorly understood. While hydrogels have demonstrated good biocompatibility in animal models, further research is needed to translate these findings to human chronic wound healing. Existing reviews largely focus on material characteristics or single bioactive agents, with limited discussion of integrated multifunctional design strategies. Recent studies demonstrate that diversified hydrogel designs and functionalities can effectively enhance wound healing, including accelerated healing and disease-specific applications. This review systematically summarizes these advances, emphasizing the relationships between hydrogel properties, their functional roles in tissue repair, and their application across pathological contexts, providing insights to guide the rational design and clinical translation of next-generation hydrogel-based wound dressings.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"461-496"},"PeriodicalIF":3.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20250803","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145986830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thyme Oleoresin-Loaded Electrospun Porous Polylactic Acid Membranes for Enhanced Meat Preservation 百里香油树脂负载电纺丝多孔聚乳酸膜用于增强肉类保存

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-10-29 DOI: 10.1002/pol.20250888

Maria Mathew, Ammu Dinakaran, Lakshmi E. Jayachandran, Sujith Athiyanathil

{"title":"Thyme Oleoresin-Loaded Electrospun Porous Polylactic Acid Membranes for Enhanced Meat Preservation","authors":"Maria Mathew, Ammu Dinakaran, Lakshmi E. Jayachandran, Sujith Athiyanathil","doi":"10.1002/pol.20250888","DOIUrl":"https://doi.org/10.1002/pol.20250888","url":null,"abstract":"<div>\u0000 \u0000 Highly porous polylactic acid (PLA) electrospun fibrous membranes loaded with thyme oleoresin (TOR) (0–20 wt%) were fabricated via electrospinning using a non-solvent induced phase separation (NIPS) mechanism for active food packaging. Scanning electron microscopy (SEM) analysis revealed uniform, bead-free fibers with high surface porosity across all samples. Among different membranes, the PLA/TOR 15% membrane showed comparatively superior mechanical strength, thermal stability, surface hydrophobicity, and water vapor barrier properties. Antioxidant evaluation using the DPPH assay confirmed strong activity, with 20% TOR-loaded membranes showing the highest scavenging (93% ± 2.7%). Antibacterial analysis revealed selective activity; no inhibition against \u0000 Escherichia coli\u0000 , while increasing TOR content enhanced inhibition against \u0000 Staphylococcus aureus\u0000 . The PLA/TOR 15% membrane was further evaluated for meat preservation over 15 days, assessing quality parameters such as color, pH, peroxide value (PV), free fatty acid (FFA) content, and thiobarbituric acid reactive substances (TBARS). These results demonstrated that the PLA/TOR membrane effectively delayed lipid peroxidation, thereby extending the shelf life of meat, highlighting its potential for active food packaging applications.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"411-427"},"PeriodicalIF":3.6,"publicationDate":"2025-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145984024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Rationally Designed Recyclable Alginate Composite Hydrogel Beads to Remove Cationic and Anionic Dyes From Synthetic Wastewater 合理设计可回收海藻酸盐复合水凝胶珠，去除合成废水中的阳离子和阴离子染料

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-10-29 DOI: 10.1002/pol.20250644

Anwer Ali, Utsav Garg, Yasser Azim

{"title":"Rationally Designed Recyclable Alginate Composite Hydrogel Beads to Remove Cationic and Anionic Dyes From Synthetic Wastewater","authors":"Anwer Ali, Utsav Garg, Yasser Azim","doi":"10.1002/pol.20250644","DOIUrl":"https://doi.org/10.1002/pol.20250644","url":null,"abstract":"<div>\u0000 \u0000 Rapid industrialization has resulted in the discharge of significant amounts of dye-contaminated wastewater, raising serious environmental concerns. Addressing this, the current study focuses on developing eco-friendly, rationally designed alginate-based composite hydrogel beads (ACHBs) for the efficient removal of both cationic (methylene blue, MB) and anionic (Congo red, CR) dyes from aqueous solutions. The ACHBs were synthesized and thoroughly characterized using FTIR, XRD, SEM–EDX, BET, TGA, and XPS analyses to confirm their structure and composition. Batch adsorption experiments were conducted to evaluate the dye removal efficiency under varying conditions including adsorbent dosage, dye concentration, contact time, pH, and temperature. Optimal adsorption capacities reached 47.8 mg g−1 for MB at pH 7.0 and 32.5 mg g−1 for CR at pH 4.5 with 50 mg of adsorbent and 90 min contact time. The incorporation and crosslinking of the composite components with Zr4+ ions provided the ACHBs with mechanical integrity and enhanced performance. Distinct mechanisms facilitated the simultaneous removal: MB was primarily adsorbed by electrostatic attraction, while CR was captured via host–guest inclusion within beta-cyclodextrin. The adsorption process was endothermic and spontaneous, and the Langmuir isotherm and pseudo-second-order models fit the data well. Regeneration studies confirmed the material's reusability for multiple cycles, demonstrating promise for sustainable water treatment.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"439-460"},"PeriodicalIF":3.6,"publicationDate":"2025-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145993999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the Mechanical Properties and Superhydrophilicity of Electrospun Coaxial Gel-PLA/PHBV Core–Sheath Nanofibers 静电纺丝共轴凝胶-聚乳酸/PHBV芯鞘纳米纤维力学性能及超亲水性研究

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-10-29 DOI: 10.1002/pol.20250867

Xinjiao Wang, Ping Liu, Xiaohong Chen, Honglei Zhou

{"title":"Study on the Mechanical Properties and Superhydrophilicity of Electrospun Coaxial Gel-PLA/PHBV Core–Sheath Nanofibers","authors":"Xinjiao Wang, Ping Liu, Xiaohong Chen, Honglei Zhou","doi":"10.1002/pol.20250867","DOIUrl":"https://doi.org/10.1002/pol.20250867","url":null,"abstract":"<div>\u0000 \u0000 The strength and hydrophilicity of nanofiber materials for tissue engineering have always been a significant challenge. This paper presents the design and preparation of PLA&Gel/PHBV core–sheath nanofibers that combine strength and super hydrophilicity using electrospinning technology. Compared to the original materials, the addition of gelatin simultaneously enhances both the strength and hydrophilicity of the materials, with the mechanical and hydrophilic properties of PLA&20 wt%Gel/PHBV nanofibers reaching optimal values of 7.45 MPa and 2.2°, respectively. The increase in strength is attributed to the entanglement effect caused by the gelatin molecular chains, which hinders the relative sliding of the molecular chains. The enhancement in hydrophilicity is due to the introduction of a large number of hydrophilic groups from Gel, improving the material's hydrophilicity. Additionally, the polar groups in gelatin and the emergence of a network pore structure significantly increase the material's water absorption rate. This work provides new insights into the design and preparation of nanofiber materials.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"428-438"},"PeriodicalIF":3.6,"publicationDate":"2025-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and Application of a Novel Aminoformate Phospholipid Derivative With Dual Function: Flame Retardancy and Formaldehyde Removal 一种具有阻燃和除甲醛双重功能的新型氨基酸磷脂衍生物的研制与应用

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-10-28 DOI: 10.1002/pol.20250718

Yuxin Bi, Bingqing Liu, Yiheng Geng, Lixia Liu, Jia Wang, Yongbing Hao, Xuefang Shang

{"title":"Development and Application of a Novel Aminoformate Phospholipid Derivative With Dual Function: Flame Retardancy and Formaldehyde Removal","authors":"Yuxin Bi, Bingqing Liu, Yiheng Geng, Lixia Liu, Jia Wang, Yongbing Hao, Xuefang Shang","doi":"10.1002/pol.20250718","DOIUrl":"https://doi.org/10.1002/pol.20250718","url":null,"abstract":"<div>\u0000 \u0000 The experimental results showed that the limiting oxygen index (LOI) value of the THPON3-THPC-treated cotton fabric increased significantly (by up to 32.5%), and the length of damage in the vertical burning test was reduced to 8.1 cm with no afterflame. Cone calorimeter tests revealed a significant reduction in combustion efficiency, with the peak heat release rate (PHRR) decreasing from 283.1 to 112.9 kW/m2 and the total heat release (THR) decreasing from 21.8 to 4.6 MJ/m2. Compared to the traditional Proban ammonia curing process, THPON3-THPC demonstrated greater flame-retardant effectiveness. This treatment improved both the comfort and environmental sustainability of the flame-retardant cotton fabric. Furthermore, experimental results showed that THPON3 achieved formaldehyde removal rates of 92.5% (E2 grade) and 68.3% (NAF grade) from plywood, outperforming urea and demonstrating significant formaldehyde removal capabilities. As an efficient formaldehyde scavenger, THPON3 significantly inhibited and delayed the release of formaldehyde from plywood. Additionally, cytotoxicity tests showed that THPON3 exhibited no significant toxicity to Hacat and BEAS-2B cells at a concentration of 800 μM, indicating a very low risk to human health in the event of accidental ingestion or inhalation. These findings are important for the application of THPON3 in flame-retardant and residential building materials.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"395-404"},"PeriodicalIF":3.6,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physical Mechanism Behind Non-Monotonic Distribution of Gel Properties Induced by Centrifugal Polymerization 离心聚合诱导凝胶性质非单调分布的物理机制

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-10-28 DOI: 10.1002/pol.20250840

Andrey Shmyrov

{"title":"Physical Mechanism Behind Non-Monotonic Distribution of Gel Properties Induced by Centrifugal Polymerization","authors":"Andrey Shmyrov","doi":"10.1002/pol.20250840","DOIUrl":"https://doi.org/10.1002/pol.20250840","url":null,"abstract":"<div>\u0000 \u0000 Technologies for formation of polymer materials with a given spatial distribution of properties are widely in demand in both scientific and industry applications. Various chemical or physical effects are used to control the formation of polymers and influence their properties, enabling the creation of materials with controlled property gradients. Among the physical effects the use of centrifugal field is one of the most effective ways. Usually it is believed that this mechanism is able to form only a monotonous distribution of properties in the radial direction. In our work, the possibility of obtaining a non-monotonic distribution of optical and mechanical polymer properties during polymerization in centrifuge is demonstrated by the example of acrylamide polymer. The use of interferometry in real-time visualization of the polymerization process allowed us to demonstrate a key role of convective motion in the final distribution of polymer properties. The magnitude of the refractive index inhomogeneity turned out to be on the order of 10−3. We propose a physical mechanism responsible for the formation of a non-monotonic distribution of polymer properties based on the competition of several effects at once: free convection, convection in a porous medium, and edge effects.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"405-410"},"PeriodicalIF":3.6,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Role of Residual Hydrogen Peroxide for Biological Applications of Polymeric N-Oxides 残余过氧化氢在聚合n -氧化物生物应用中的作用

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-10-23 DOI: 10.1002/pol.20250751

Michelle Kobus, Shirin Mesgarha, Erica Moretto, Jon Wullenweber, Mathias Ernst, Sebastian G. Wicha, Wolfgang Maison

{"title":"The Role of Residual Hydrogen Peroxide for Biological Applications of Polymeric N-Oxides","authors":"Michelle Kobus, Shirin Mesgarha, Erica Moretto, Jon Wullenweber, Mathias Ernst, Sebastian G. Wicha, Wolfgang Maison","doi":"10.1002/pol.20250751","DOIUrl":"https://doi.org/10.1002/pol.20250751","url":null,"abstract":"Polymers with N-oxide groups find applications in the biomedical field because they are highly hydrated in water, are considered to be nontoxic, and have stealth properties. Additional antimicrobial activity of polymeric N-oxides has also been reported, and it is currently unclear if this activity is a general feature of polymeric N-oxides or a special property of selected derivatives. N-Oxides are often prepared by oxidation of tertiary amines with hydrogen peroxide, which is notoriously difficult to remove from the resulting polymeric N-oxides. This study analyzes the role of residual oxidant in polymeric N-oxides for antimicrobial activity. Sensitive quantification reveals a significant release of hydrogen peroxide from oxidized polymers in solution and grafted on polyethylene or polyamide. The release of hydrogen peroxide from these polymers can lead to concentrations exceeding the minimum inhibitory concentrations (MICs) for \u0000 Staphylococcus aureus\u0000 and \u0000 Escherichia coli\u0000 . It can thus compromise microbiological assays. Rigorous removal of hydrogen peroxide leads to polymeric N-oxides with no antibacterial activity. Antibacterial effects of polymeric N-oxides against planktonic bacteria are primarily attributed to residual hydrogen peroxide, rather than to the intrinsic activity of the N-oxide functionality. Poly(N-oxide)-modified surfaces are therefore inert low-fouling materials with tunable, transient antibacterial functionality through controlled hydrogen peroxide release.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"384-394"},"PeriodicalIF":3.6,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20250751","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and Studies of Biodegradable Hydrogel Photonic Crystals 可生物降解水凝胶光子晶体的制备与研究

IF 3.6 3区化学

Journal of Polymer Science Pub Date : 2025-10-22 DOI: 10.1002/pol.20250767

Xueting Li, Xizhe Ma, Xihua Lu

{"title":"Preparation and Studies of Biodegradable Hydrogel Photonic Crystals","authors":"Xueting Li, Xizhe Ma, Xihua Lu","doi":"10.1002/pol.20250767","DOIUrl":"https://doi.org/10.1002/pol.20250767","url":null,"abstract":"<div>\u0000 \u0000 In this study, we investigate temperature/pH/redox-responsive poly(N-isopropylacrylamide/N-tert-butylacrylamide/N-acrylamido-L-phenylalanine) (P(NIPA/TBA/Aphe)) nanogels cross-linked by N,N′-bis(acryloyl)cystam (BAC) using emulsion precipitation polymerization. The nanogels, denoted as PNTA-BAC, are characterized through nuclear magnetic resonance spectroscopy (NMR), infrared spectroscopy (IR), transmission electron microscopy (TEM), and dynamic light scattering (DLS). The hydrogel photonic crystals self-assembled by the PNTA-BAC nanogels demonstrate a stable structural color due to in situ gelation even as the temperature is increased up to the phase transition temperature (Tp) of the nanogels. A large steric hindrance of N-tert-butyl of the TBA side group dramatically slows down the shrinkage of the PNTA-BAC nanogels, leading to the in situ gelation of the hydrogel photonic crystals. Moreover, the synergies of large steric hindrance of the benzene ring and the strongly absorbing water of the carboxyl group of the side groups of the nanogels maintain the structural color of the hydrogel photonic crystals above Tp. When loaded with the drug doxorubicin hydrochloride (DOX), the nanogels exhibit degradability in the strong reducing agent 1,4-dithiothreitol (DTT). Cell toxicity is evaluated using mouse endothelial cells cultured with different concentrations of the nanogel solution. The results indicate that the biodegradable hydrogel photonic crystals composed of the PNTA-BAC nanogels have good biocompatibility, providing a potential nano-platform for drug delivery systems.\u0000 </div>","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"64 2","pages":"376-383"},"PeriodicalIF":3.6,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0