Polymer Bulletin最新文献_第3页

Enhanced heat sealability and barrier performance of guar gum/polyvinyl alcohol based on biocomposite film reinforced with micro-fibrillated cellulose for packaging application 微纤纤维增强瓜尔胶/聚乙烯醇生物复合膜的热封性和阻隔性

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-03-01 DOI: 10.1007/s00289-025-05701-x

Ram Kumar Deshmukh, Shefali Tripathi, Pradeep Kumar, Kirtiraj K. Gaikwad

{"title":"Enhanced heat sealability and barrier performance of guar gum/polyvinyl alcohol based on biocomposite film reinforced with micro-fibrillated cellulose for packaging application","authors":"Ram Kumar Deshmukh, Shefali Tripathi, Pradeep Kumar, Kirtiraj K. Gaikwad","doi":"10.1007/s00289-025-05701-x","DOIUrl":"10.1007/s00289-025-05701-x","url":null,"abstract":"<div><p>Heat-sealing properties are vital for biopolymer-based food packaging, ensuring effective seals, preserving freshness, preventing contamination, and enhancing durability. This study examines the impact of incorporating micro-fibrillated cellulose (MFC) into guar gum and polyvinyl alcohol (PVA) composites for heat-sealable packaging. Significant improvements in tensile strength, water vapor barrier properties, and heat-sealing capacity were observed compared to control films. The thickness of the film varies between 0.080 and 0.148 mm, the brightness ranges from 87.85 to 89.72, and the total color value ranges from 4.90 to 26.38. The mechanical strength of the GG/PVA/MFC0.1 and GG/PVA/MFC1.0% film is superior (7.80–9.00 MPa and elongation up to 90–98%) than the GG/PVA together without MFC. The heat-sealing strength of the developed film was superior for GG/PVA/MFC0.1 and GG/PVA/MFC1.0% as the tensile strength reached up to 60.13% improvement from GG/PVA composite. GG/PVA/MFC1.0% moisture vapor transmission rate significantly decreased to 2.09 ± 0.32 mg cm<sup>−2</sup> day<sup>−1</sup> from 2.55 ± 0.15 mg cm<sup>−2</sup> day<sup>−1</sup> of GG/PVA. The oxygen transmission rate was vividly reduced from 0.098 cm<sup>3</sup>/m<sup>2</sup> day for neat guar gum film to 0.026 cm<sup>3</sup>/m<sup>2</sup> day for micro-fibrillated cellulose-incorporated composite. Incorporating biobased materials in this study would meet the demand for sustainable packaging, serving as a viable alternative to conventional plastics and enhancing environmental sustainability.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 9","pages":"3755 - 3783"},"PeriodicalIF":3.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938240","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

Preparation of sulfated/sulfonated castor oil through an eco-friendly process and its application in leather 环保工艺制备硫酸/磺化蓖麻油及其在皮革中的应用

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-28 DOI: 10.1007/s00289-025-05697-4

Yanfen Mao, Yueqing Huo, Shengti Cao, Song Guo, Xiaochen Liu

{"title":"Preparation of sulfated/sulfonated castor oil through an eco-friendly process and its application in leather","authors":"Yanfen Mao, Yueqing Huo, Shengti Cao, Song Guo, Xiaochen Liu","doi":"10.1007/s00289-025-05697-4","DOIUrl":"10.1007/s00289-025-05697-4","url":null,"abstract":"<div><p>Today, the world is calling for conserve water and environmentally friendly production. This study examines the feasibility of producing fatliquor from castor oil using the sulfur trioxide process instead of the traditional concentrated sulfuric acid process. Fatliquor, which enabled the leather fiber to lubricate, was prepared by sulfated castor oil with sulfur trioxide at a particular temperature. Moreover, five types of anionic fatliquors were prepared by changing the SO<sub>3</sub>/castor oil ratio. Physical and chemical studies of fatliquoring agents such as viscosity, pH, solid content, organically combined sulfuric anhydride, iodine value, saponification value, and emulsifying stability were determined before its application on leather. The effects of sulfonation degree and ester bond retention on the characteristics of fatliquored leather were investigated. The softness, tensile strength, elongation at break, and tear strength of the best experimental leather are 12.6%, 18.1%, 25.0%, and 172.6% larger than the commercially available product, respectively. Too much hydrolysis of ester bonds will cause the softness of the fatliquored leather to deteriorate. In addition, the experimental emulsion is easily biodegradable.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 9","pages":"3663 - 3683"},"PeriodicalIF":3.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938237","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

Sustainable biocarbon derived from walnut shells and its composites with mono-functional bio-benzoxazine for advanced applications 从核桃壳中提取的可持续生物碳及其与单功能生物苯并恶嗪的复合材料的先进应用

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-27 DOI: 10.1007/s00289-025-05703-9

Athar Ali Khan Gorar, Guo Zhiyi, Wang Zhicheng, Abbas Daham, Xudong wang, Jun Wang, Wen-Bin Liu

{"title":"Sustainable biocarbon derived from walnut shells and its composites with mono-functional bio-benzoxazine for advanced applications","authors":"Athar Ali Khan Gorar, Guo Zhiyi, Wang Zhicheng, Abbas Daham, Xudong wang, Jun Wang, Wen-Bin Liu","doi":"10.1007/s00289-025-05703-9","DOIUrl":"10.1007/s00289-025-05703-9","url":null,"abstract":"<div><p>Using agricultural waste as biocarbon material is a recent development with many potential applications. Nutshells can be utilized to produce biocarbon, enhancing the electrical properties of thermoset composites. In this research, Walnut shells (WSs) were carbonized at 750 °C, and activated carbon filler was thoroughly examined. Isothermal compression molding was used, and composites were produced by incorporating 1–2.5 wt.% of carbonized bio-filler (CW) into Vanillin-furfuryl amine-derived bio-benzoxazine. The composites showed improved thermal stability, increasing from 293 to 321 °C; Char yield enhanced from 53.3% to 60.4%. The flexural modulus and flexural strength exhibited enhancements of 41.3% and 20%, respectively, while toughness significantly increased from 0.87 to 0.94 N-mm compared to the neat matrix. Heat deflection temperature tests showed improved thermomechanical properties in composites. Flammability tests indicated that they are flame-resistant and fire-safe due to the CW filler. Thermal conductivity enhanced by 6%, and dielectric characteristics increased by 56.7% with 2.5 wt.% filler reinforcement. With the above findings, these composites can be utilized in designing parts exposed to fire, high temperatures, efficient energy storage, enhanced functionality in electronic devices, and improved insulation efficiency.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 9","pages":"3641 - 3661"},"PeriodicalIF":3.1,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938689","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

Tert-butyl acrylate (TBA) co-monomer-based water-resistant wood adhesive: synthesis and characterizations 丙烯酸叔丁酯（TBA）共单体基防水木材胶粘剂：合成与表征

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-27 DOI: 10.1007/s00289-025-05690-x

Ravindra Gadhave

{"title":"Tert-butyl acrylate (TBA) co-monomer-based water-resistant wood adhesive: synthesis and characterizations","authors":"Ravindra Gadhave","doi":"10.1007/s00289-025-05690-x","DOIUrl":"10.1007/s00289-025-05690-x","url":null,"abstract":"<div><p>To enhance the moisture resistance of wood adhesives, this work aims to add a branched co-monomer, such as tert-butyl acrylate, to polyvinyl acetate (PVAc) emulsion adhesive. This research focuses the development and testing of emulsion co-polymers containing vinyl acetate (VAc), vinyl neodecanoate (VeoVa), N-methylol acrylamide (NMA), and tert-butyl acrylate (Poly (VAc-VeoVa10-TBA-NMA)) as wood adhesives. Preservatives, plasticizer, polyvinyl alcohol (PVA) solution, and aluminum chloride solution are added to develop the emulsion-based adhesive samples. The VAc, VeoVa, methyl methacrylate (MMA) and NMA (Poly (VAc-VeoVa-MMA-NMA)) adhesive are then compared with the poly (VAc-VeoVa-TBA-NMA)-based adhesive sample. The EN 204–205 standard was followed in testing the tensile strength of bonded wood specimens in both wet and dry circumstances to evaluate the adhesives’ performance. When compared to a co-polymer-based adhesive based on MMA, EN 204 demonstrates that after 6 h of bonding, the tensile shear strength of a TBA-based adhesive increased by 25.31% in a dry environment and by 31.58% in a wet environment. The established approach provides a simple and useful way to produce adhesives with better water resistance and bonding strength by using TBA as a branching co-monomer.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 9","pages":"3613 - 3640"},"PeriodicalIF":3.1,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938690","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

Surface modification of montmorillonite—MMT nanofiller: how it affects both the rigid amorphous fraction (RAF) and the physical properties of polyamide 66 蒙脱石- mmt纳米填料的表面改性：如何影响聚酰胺66的刚性非晶部分（RAF）和物理性能

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-26 DOI: 10.1007/s00289-025-05646-1

Mohamed A. Ismail, Ebtisam A. Yousef, G. M. Nasr

{"title":"Surface modification of montmorillonite—MMT nanofiller: how it affects both the rigid amorphous fraction (RAF) and the physical properties of polyamide 66","authors":"Mohamed A. Ismail, Ebtisam A. Yousef, G. M. Nasr","doi":"10.1007/s00289-025-05646-1","DOIUrl":"10.1007/s00289-025-05646-1","url":null,"abstract":"<div><p>Studying the impact of type (organo-modified montmorillonite—MMT) into polyamide 66 (PA66) on the molecular motion of polymers within the space between polymer and nanoparticle is important to understand the improved properties of nanocomposites. The mechanical, thermal, and electrical properties have been examined employing Dynamical Mechanical Thermal Analysis, Differential Scanning Calorimetric, and Dielectric Relaxation Spectroscopy techniques. The results showed that the reinforcing effect of the PA66 matrix with MMT loading was justified by an 83% increase in the storage modulus (G′) with Cloisite 30B (C30B) MMT nanofiller. Furthermore, the glass transition temperature (T<sub><i>g</i></sub>) decreased by 5.0 °C. A significant increase in the rigid amorphous fraction (RAF) was found due to the presence of filler, especially in the case of C30B-MMT nanocomposites, which comprised approximately 22% of the polymer. Moreover, it was observed that the dielectric constant (ε′) for all nanocomposites increased with temperature, particularly for Nanofil9 (N9)–MMT nanocomposites at relatively high temperatures (100 °C, 0.03 Hz). The conduction mechanism observed in all tested samples was confirmed to follow the correlated barrier hopping mechanism.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 9","pages":"3553 - 3611"},"PeriodicalIF":3.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00289-025-05646-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938594","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

Modeling the Payne effect in filled rubbers: accounting for time effect and partial reversibility 填充橡胶中的佩恩效应建模：考虑时间效应和部分可逆性

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-24 DOI: 10.1007/s00289-025-05680-z

Rebeca Cedeno Madera, Stéphane Lejeunes, Eric Euchler

引用次数: 0

Fabrication and characterization of functionalized chitosan/TiO2 film composites with antimicrobial properties 具有抗菌性能的功能化壳聚糖/TiO2膜复合材料的制备与表征

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-23 DOI: 10.1007/s00289-025-05674-x

Verónica Ariadna Pérez Martínez, Nauru Idalia Vargas Maya, Luis Román Rosas Orta, Beatriz Ruíz Camacho, Lourdes Ramos Galicia, David Contreras López, Bernardo Franco, Javier Vallejo Montesinos

{"title":"Fabrication and characterization of functionalized chitosan/TiO2 film composites with antimicrobial properties","authors":"Verónica Ariadna Pérez Martínez, Nauru Idalia Vargas Maya, Luis Román Rosas Orta, Beatriz Ruíz Camacho, Lourdes Ramos Galicia, David Contreras López, Bernardo Franco, Javier Vallejo Montesinos","doi":"10.1007/s00289-025-05674-x","DOIUrl":"10.1007/s00289-025-05674-x","url":null,"abstract":"<div><p>With the current rise in the need for novel materials with biomedical applications, nanotechnology has provided the framework for designing novel materials with both regenerative and antimicrobial characteristics. This work implemented a novel synthetic workflow to generate functionalized particulate and film composites. The materials were tested for an antimicrobial effect of the side group of a series of silane coupling agents when used to modify the surface of titanium dioxide particles and applied as filler in chitosan-starch films. These materials were analyzed for their water retention capacity, film moisture, mechanical properties, and antimicrobial capacity against <i>Escherichia coli</i> and <i>Bacillus subtilis</i>. The materials' physical, chemical, and viscoelastic properties were determined and showed they are suitable for tissue applications since they were elastic enough while maintaining a suitable water content and water absorption necessary in body physiology. In addition, the change in their mechanical and structural properties was analyzed once they were subjected to a photodegradative process. It was found that the rutile particles functionalized with 3-aminopropyltrimethoxysilane or imidazole showed antimicrobial activity against both bacteria, both alone and on chitosan-starch films. Also, the rutile amine particulate composite showed general cell damage in direct contact with a reporter <i>E. coli</i> strain, suggesting the release of ions that produce cell stress. The film composites showed mechanical properties suitable for tissue regeneration and, with the proper combination, antimicrobial activity. With the novel synthesis shown here, which is cost-effective and can be applied to other biomedical applications, novel materials can be generated for suitable biomedical applications.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 9","pages":"3489 - 3526"},"PeriodicalIF":3.1,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938537","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

Correction: Eco-friendly green alternative binder for asphalt from waste oil and waste polymer 更正：从废油和废聚合物中提取的环保绿色沥青粘合剂

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-21 DOI: 10.1007/s00289-025-05677-8

Ibrahim M. Nassar, Ramy M. Abdel-monem, M. A. Sayed, A. A. Ragab

引用次数: 0

Preparation of non-toxic green slippery liquid infused surfaces based on electrospun fiber with anti-algae and anti-bacterial properties 具有抗藻、抗菌性能的静电纺纤维无毒绿色光滑液体注入表面的制备

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-19 DOI: 10.1007/s00289-025-05679-6

Sena Kardelen Dinc, Busra Nur Caglar, Gokcen Birlik Demirel, Nalan Oya San Keskin

{"title":"Preparation of non-toxic green slippery liquid infused surfaces based on electrospun fiber with anti-algae and anti-bacterial properties","authors":"Sena Kardelen Dinc, Busra Nur Caglar, Gokcen Birlik Demirel, Nalan Oya San Keskin","doi":"10.1007/s00289-025-05679-6","DOIUrl":"10.1007/s00289-025-05679-6","url":null,"abstract":"<div><p>Microbial attachment is a problem of vital importance and economic significance, particularly in marine environments. Slippery Liquid Infused Surfaces (SLIPS) have attracted considerable interest as a solution to this challenge. In the present study, we hypothesized that Saint John's Wort Oil (SJWO) could provide an eco-friendly alternative to synthetic oils, combating marine microbial attachment with non-toxic chemicals. We developed a hydrophobic electrospun porous cellulose acetate fiber layer, coated with silica nanoparticles (SiO<sub>2</sub>NPs), and infused with SJWO. The optimization process involved measuring sliding velocity, the number of SiO<sub>2</sub>NP layers, the amount of lubricant, and the infusion time. The optimal configuration demonstrated a sliding velocity of 0.31 cm/s on a 10° slope. Antibacterial tests revealed that the SLIPS reduced bacterial attachment of <i>Pseudomonas aeruginosa</i> from 1.67 ± 0.03 × 10<sup>6</sup> CFU/mL on glass substrates to 2.85 ± 0.07 × 10<sup>5</sup> CFU/mL for SLIPS. Similarly, the anti-algae performance against <i>Chlorella</i> sp. showed a significant reduction in optical density from 0.92 ± 0.01 for glass substrates to 0.19 ± 0.01 for SLIPS, and chlorophyll content was reduced from 7.24 ± 0.19 µg/mL to 3.70 ± 0.77 µg/mL. The findings indicate that SJWO-infused SLIPS provide a robust and effective method for reducing microbial attachment.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 9","pages":"3463 - 3488"},"PeriodicalIF":3.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00289-025-05679-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938227","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

Enhanced physical, dielectric, and radiation shielding properties of PVA/CMC/x wt% ZnS-blended polymers 增强的PVA/CMC/x wt% zns混合聚合物的物理、介电和辐射屏蔽性能

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2025-02-17 DOI: 10.1007/s00289-025-05678-7

A. M. El-Naggar, A. M. Kamal, A. M. Aldhafiri

{"title":"Enhanced physical, dielectric, and radiation shielding properties of PVA/CMC/x wt% ZnS-blended polymers","authors":"A. M. El-Naggar, A. M. Kamal, A. M. Aldhafiri","doi":"10.1007/s00289-025-05678-7","DOIUrl":"10.1007/s00289-025-05678-7","url":null,"abstract":"<div><p>This study produced promising nanocomposite blended polymers from polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC) infused with zinc sulfide (ZnS) nanoparticles, PVA/CMC/x wt% ZnS-blended polymers, making them ideal for various applications. The structures of the nanofiller (ZnS) and PVA/CMC with x wt % ZnS-blended polymers were investigated using X-ray diffraction technique. The effect of doping on the morphology of the host blend was examined using scanning electron microscopy. As the concentration of ZnS rose to 10% in the PVA/CMC matrix, the value of the real part of the dielectric constant initially reduced and then rose with higher amount ratios in the host blended polymer. The peak value of energy density of the doped blended polymer was achieved with a blend containing 5 wt % ZnS. The impact of ZnS doping amount on the AC conductivity and electric modulus of the host blend was explored. The introduction of varying quantities of micro-ZnS leads to increased LAC values throughout the whole energy spectrum. The maximum LAC value for an undoped blend is 1.54126 cm at 0.015 MeV, whereas for a blended polymer doped with 20 wt% ZnS, it rose to 2.59823 cm. The minimum corresponding values of 0.02334 cm and 0.03422 cm were recorded at 15 MeV, respectively. The MAC values exhibited minimal variation as the blended polymer was doped with varying amounts of ZnS. The HVL and TVL values decreased with the increased incorporation of nano-ZnS in the host blend. The MFP dropped from 2.48955 cm (undoped blend) to 1.55154 cm (doped blend with 20 wt% ZnS) at 0.03 MeV. The corresponding values at 1 MeV are 11.47449 and 7.75989 cm, respectively. The difference between TVL and HVL at 15 MeV is 68 cm for undoped blended polymers and 47 cm for doped blended polymers containing 20 wt% ZnS. The doped blend containing 20 wt % ZnS demonstrated the highest FNRCS value among all blends. The buildup factors values of the PVA/CMC blended polymer decreased with the incorporation of varying amounts of nano-ZnS.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 9","pages":"3439 - 3461"},"PeriodicalIF":3.1,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938723","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