Macromolecular Research最新文献

{"title":"Synthesis and characterization of the hyperbranched polymers based on nanoparticles for removal of pollutant from water","authors":"S. Mojtaba Amininasab,&nbsp;Nadiye Fallahi,&nbsp;Parisa Mohammadi,&nbsp;Zahed Shami","doi":"10.1007/s13233-024-00264-8","DOIUrl":"10.1007/s13233-024-00264-8","url":null,"abstract":"<div><p>Harmful heavy metals have a significant effect on the toxicity of wastewater due to their non-biodegradability; hence, they will harm living things. Graphene oxide has been studied in recent research to remove these heavy metals. This study was carried out to determine the characterization of graphene oxide-based hyperbranched polymers (GO-MHBP) and their batch experiments on removing heavy metals (Cr³⁺ and Hg²⁺). The surface of the graphene oxide particles was modified by 3-(aminopropyl) triethoxysilane, and then hyperbranched polymers were fabricated by incorporating 3,5-diaminobenzoic acid and maleic anhydride. The synthesized polymers were characterized physically and morphologically using FT-IR, FE-SEM, EDX, and TGA techniques. Moreover, they were assessed in terms of adsorption capacity to remove pollutants of Cr³⁺ and Hg²⁺. To that end, the effect of pH, adsorbent amount, contact time, and initial concentrations of metal ions was evaluated. Furthermore, the adsorption kinetics and isothermal behavior were investigated for the adsorption efficiency of GO-MHBP nanocomposite. The adsorption process was consistent with the second-order kinetic model and the Langmuir isotherm model. Eventually, the GO-MHBP could serve as promising adsorbents for potential application in the removal of Cr³⁺ and Hg²⁺ from wastewater.</p><h3>Graphical abstract</h3><p>Graphene oxide-based hyperbranched polymers provided an effective adsorbent system for heavy metal removal. These nanocomposites are significant for the remediation and removal of Cr³⁺ and Hg²⁺ ions from wastewater due to their simple synthesis method and low cost</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 8","pages":"799 - 809"},"PeriodicalIF":2.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141258218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the structure and properties of adhesives and compounds based on epoxy urethane oligomers synthesized from polyesters","authors":"Alexey Slobodinyuk,&nbsp;Dmitriy Kiselkov,&nbsp;Maria Cherepanova,&nbsp;Daria Slobodinyuk","doi":"10.1007/s13233-024-00279-1","DOIUrl":"10.1007/s13233-024-00279-1","url":null,"abstract":"<div><p>The goal of present work is to create a polymer base for compounds, binders for materials with different fillers and adhesives. The article presents the results of studies of the physical and mechanical characteristics of urethane-containing elastomers based on epoxy urethane oligomers. The reaction proceeded in two stages and included the formation of oligodiisocyanate. Based on them, elastomers with urethane-hydroxyl hard segments were synthesized. Methyl nadic anhydride and an oligodiendiol with terminal carboxyl groups were used as hardeners. The deformation-strength properties of elastomers, as well as the strength of the adhesive joints for aluminum and steel, were studied. Using an oligomer with carboxyl groups as a hardener lowers the glass transition temperature of elastomers and improves their deformation characteristics. The glass transition temperature of the samples was determined using a differential scanning calorimeter. The physical and mechanical tensile characteristics of the obtained materials were determined on a universal testing machine. Elastomers cured with an oligomer containing carboxyl groups can be used as a polymer base for compounds and binders for materials with different kinds of fillers due to their low modulus and high deformation properties. Elastomers cured with methyl nadic anhydride may find use as adhesives.</p><h3>Graphical abstract</h3> <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 10","pages":"989 - 1003"},"PeriodicalIF":2.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141258269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Load bearing investigations on lightweight rubber seed husk cellulose–ABS 3D-printed core and sunn hemp fiber-polyester composite skin building material","authors":"G. Mahendran,&nbsp;M. D. Mohan Gift,&nbsp;Ismail Kakaravada,&nbsp;V. L. Raja","doi":"10.1007/s13233-024-00277-3","DOIUrl":"10.1007/s13233-024-00277-3","url":null,"abstract":"<div><p>The goal of this study is to determine the effect of varying the volume fraction of a novel ABS–rubber seed husk cellulose 3D-printed honeycomb core on the mechanical, drop load impact, fatigue, and thermal behavior of a sunn hemp polyester skin composite. The cellulose/ABS-tailored filaments were created using a screw extruder and the composites were manufactured using compression molding. The results of the tests showed that the tensile strength, flexural strength, tensile modulus, flexural modulus, and Izod impact were all enhanced by the addition of cellulose and the sunn hemp fiber. Moreover, adding 4.0 phr of cellulose to the ABS matrix increased its tensile strength by 141 MPa, flexural strength by 173 MPa, tensile modulus by 4.9 GPa, flexural modulus by 6.1 GPa, and impact toughness by 5.5 J. Similarly, under 25, 50, and 70% of ultimate stress loading conditions, and the fatigue cycles of the composite RSC5 with cellulose content of 4.0 phr reached up to 26,897, 23,899, and 21,559. However, composite with 2.0 phr of cellulose produced significant energy absorption of 12.4 J in the drop load impact toughness. Similarly, the mass-loss stability of composite RSC5 improved with 4 phr of cellulose. The final decomposition temperature was recorded at a maximum of 532 °C, which is a significant improvement on comparison with other composites. Finally, SEM fractography proves that the ABS core adheres better to the polyester resin and the fibers are well adhered to the matrix. In engineering applications, where lightweight composite panels and boards are required, these high-performance and high-thickness core–skin composites could be utilized.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 10","pages":"947 - 958"},"PeriodicalIF":2.8,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141100920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum: New pyrazine-based π-conjugated polymer for dopant-free perovskite solar cell","authors":"Jeonghyeon Park,&nbsp;Lakshman Chetan,&nbsp;Hyerin Kim,&nbsp;Je-Sung Jee,&nbsp;Yeong-Soon Gal,&nbsp;Sung-Ho Jin","doi":"10.1007/s13233-024-00270-w","DOIUrl":"10.1007/s13233-024-00270-w","url":null,"abstract":"","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 6","pages":"605 - 605"},"PeriodicalIF":2.8,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141103350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of bisphenol A molecularly imprinted polymers via Pickering emulsion polymerization stabilized with TiO2 nanoparticles","authors":"Zehu Wang,&nbsp;Xiaohu Xing,&nbsp;Tengyue Gao,&nbsp;Guangshuo Wang,&nbsp;Yanming Wang,&nbsp;Xiaoliang Zhang,&nbsp;Zhixiao Zhang,&nbsp;Ping Li","doi":"10.1007/s13233-024-00274-6","DOIUrl":"10.1007/s13233-024-00274-6","url":null,"abstract":"<div><p>As a typical endocrine disrupter, bisphenol A (BPA) in the environment could damage the reproductive and endocrine system of humans and mammals. Hence, the precise removal of BPA from the environment becomes increasingly urgent. In this work, we employ Pickering emulsion polymerization to prepare the molecularly imprinted polymer (MIP) microspheres containing specific binding sites for the precise recognition of BPA through the non-covalent molecular imprinting strategy. In the process of polymerization, TiO₂ nanoparticles are used as the sole emulsifier to build the Pickering oil/water emulsion system followed by the radical polymerization. The template molecules of BPA could be eluted from the polymer microspheres by continuous Soxhlet extraction. The obtained MIP microspheres were characterized with the help of optical microscope and field emission scanning electron microscope, respectively. The MIP microspheres present regularly spherical structures with a relative broad size distribution. The chemical structure and thermal stability of MIP and non-imprinted polymer (NIPs) microspheres also were investigated by Fourier transform infrared spectroscopy and thermogravimetry, respectively. The formation of specific imprinted sites on the MIPs was validated through a batch of rebinding experiments, including the binding kinetics, binding isotherm and selective experiment. Moreover, the obtained MIP microspheres could be regenerated and recycled at least five cycles without significant loss of binding capacity. The MIP microspheres would have broad application prospects in the environmental and analytical field.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>Schematic illustration for the preparation of MIPs microspheres via Pickering emulsion polymerization</p></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 9","pages":"873 - 884"},"PeriodicalIF":2.8,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141116940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of hollow TiO2 nanospheres with highly porous surface for effective nucleating agents in supercritical carbon dioxide foaming of thermoplastic polyurethanes","authors":"Jung Seob Shim,&nbsp;Hyejin Kim,&nbsp;Taio Chang,&nbsp;Yong Hwan Yoo,&nbsp;Seung Joon Lee,&nbsp;Kyu Hwan Park,&nbsp;Ho-jong Kang,&nbsp;Dong Hyun Lee","doi":"10.1007/s13233-024-00269-3","DOIUrl":"10.1007/s13233-024-00269-3","url":null,"abstract":"<div><p>In this study, hollow nanospheres of titanium dioxide (TiO₂) are prepared and utilized as potential nucleating agents in supercritical carbon dioxide (scCO₂) foaming process of thermoplastic polyurethanes (TPUs) at different foaming temperatures and saturation pressures. To produce the hollow nanospheres of titanium dioxide (TiO₂), well-defined spheres of polystyrene (PS) with a diameter of about 300 nm are first synthesized as templates using surfactant-free emulsion polymerization. A layer of titanium tetraisopropoxide (TTIP) is then uniformly coated on the PS spheres followed by calcination in a furnace to convert the titania layer to the titanium oxide layer. Hollow nanospheres of titanium dioxide with a well-defined morphology are prepared by calcination at high temperatures, as the PS spheres completely decompose. Interestingly, highly porous structures, which give rise to high surface area for trapping scCO₂, are generated on the surface of the TiO₂ nanoparticles during the thermal treatment. The dispersion of TiO₂ nanospheres in the TPU matrix is successful, serving as heterogeneous nucleating agents that influence the cell density and morphology of the extended TPU in the foaming process.</p><h3>Graphical abstract</h3><p>In this study, hollow nanospheres of titanium dioxide (TiO₂) with unique porous surface are prepared and utilized as potential nucleating agents in supercritical carbon dioxide (scCO₂) foaming process of thermoplastic polyurethanes (TPUs) to control various foaming parameters including foaming ratio, cell size, cell density etc.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 8","pages":"789 - 797"},"PeriodicalIF":2.8,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140929281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of adjusting charge transport on optoelectronic performances of polymer light-emitting diodes based on SY-PPV","authors":"Junfei Liang","doi":"10.1007/s13233-024-00268-4","DOIUrl":"10.1007/s13233-024-00268-4","url":null,"abstract":"<div><p>Unconjugated polymer poly(vinylcarbazole) (PVK) was incorporated into poly[{2,5-di(3′,7′-dimethyloctyloxy)-1,4-phenylene-vinylene}-co-{3-(4′-(3″,7″-dimethyloctyloxy)phenyl)-1,4-phenylenevinylene}-co-{3-(3′-(3′,7′-dimethyloctyloxy) phenyl)-1,4-phenylenevinylene}](SY-PPV) as the emissive layer of PLEDs. The unconjugated backbone of PVK effectively restrains the hole transport property of SY-PPV, which is advantaged to realize better charge-transport balance. Subsequently, the blue-lighting polymer poly[(9,9-dioctyl-2,7-fluorene)-co-(dibenzothiophene -S,S-dioxide)](SO10), which has a deep highest occupied molecular orbital, was employed as the hole-blocking layer to further balance the charge transportation of the emissive device. The SO10 can effectively restrict the hole carrier entering into cathode interface, which is instrumental in avoiding exction quenching on the cathode interface. Through optimizing device structure, a maximum luminous efficiency of 13.52 cd A⁻¹ was realized, which is achieved 120% improvement of that of the pristine SY-PPV as emissive layer. These results indicate that incorporating unconjugated polymer and hole-blocking layer is an efficient method to adjust charge-transport balance of hole-type emissive materials.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 9","pages":"853 - 860"},"PeriodicalIF":2.8,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140929422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chitosan-reinforced nanocrystalline cellulose hydrogels containing activated carbon as antitoxin wound dressing","authors":"Najihah Rameli,&nbsp;Bee-Yee Lim,&nbsp;Pei-Yee Leong,&nbsp;Choon-Choo Lim,&nbsp;Shiow-Fern Ng","doi":"10.1007/s13233-024-00266-6","DOIUrl":"10.1007/s13233-024-00266-6","url":null,"abstract":"<div><p>Wound infection causes wound chronicity as the presence of pathogens prolong wound healing time. Endotoxins lipopolysaccharides (LPS) are released from Gram-negative bacteria when they are lysed by host phagocytic cells during an immune response. These endotoxins in wounds are shown to be one of the causes of delayed wound healing. The porous activated carbon (AC) can act as an important absorptive material for the elimination of bacterial toxins, which makes it an attractive biomaterial for infected wounds. NCC is also reported to facilitate cell adhesion, proliferation, and migrations. Previously, our laboratory has shown that chitosan (CS) reinforced with Kenaf nanocrystalline celluloses (NCC) possesses vastly improved mechanical properties. This study explores the potential of incorporating AC into NCC-CS hydrogel (AC/NCC), with the aim of eliminating bacteria toxins in wounds as well as the acceleration of wound healing. The AC/NCC hydrogel was characterized in terms of rheological properties, swelling behaviour, fourier transform infrared spectroscopy as well as zeta potential. Then the AC/NCC hydrogel dressings were evaluated in vitro using a cytotoxicity study and toxin removal assay. The results showed that hydrogels exhibit desirable rheological properties with homogenous activated carbon particles. The hydrogels exhibit low cytotoxicity towards the human fibroblast and keratinocytes cells. The hydrogel can remove up to 85% of endotoxins when treated with 0.1 EU/mL of LPS. In summary, this study has shown that AC/NCC hydrogel has a vast potential as an antitoxin dressing for infected chronic wounds.</p><h3>Graphical Abstract</h3><p>AC/NCC hydrogel dressing eliminates endotoxin from infected wounds and accelerates wound healing</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 9","pages":"861 - 872"},"PeriodicalIF":2.8,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140929347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Star-shaped PEDOT:PSS conductive polymers with reduced graphene oxide for high performance supercapacitor","authors":"Long Shen,&nbsp;Yunhee Ahn,&nbsp;Yoon Kim,&nbsp;Suyeon Kim,&nbsp;Sunghee Choi,&nbsp;Tae-Dong Kim,&nbsp;Dongju Lee","doi":"10.1007/s13233-024-00267-5","DOIUrl":"10.1007/s13233-024-00267-5","url":null,"abstract":"<div><p>Three-armed poly(styrene sulfonate) derivatives (PSS-T) was synthesized by atom transfer radical polymerization (ATRP) and used as dopants for the preparation of star-shaped PEDOT:PSS-T composites. From their loosed packing structure, reduced graphene oxide (rGO) was well doped into the PEDOT:PSS-T composites resulted in improved dispersion properties and enhanced electrical performance. The cyclic stability of supercapacitors using PEDOT:PSS-T/rGO composites showed 95.5% capacitance retention after 10,000 charge/discharge cycles which is superior than its devices using of commercial PEDOT:PSS/rGO composites.</p><h3>Graphical abstract</h3><p>\u0000The structure of star-shaped PEDOT:PSS-T composite and its excellent capacitance stability.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 8","pages":"767 - 776"},"PeriodicalIF":2.8,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140929610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation, sustained release and cell imaging studies of rhodamine 6G@-nido-carborane fluorescent polymer","authors":"Tiantian Chai,&nbsp;Ying Liu,&nbsp;Meng Zhou,&nbsp;Shuo Wang,&nbsp;Jiankang Feng,&nbsp;Mengtong Zhang,&nbsp;Xibing Feng,&nbsp;Jingnan Hu,&nbsp;Qingxia Chu,&nbsp;Chichong Lu,&nbsp;Guofan Jin","doi":"10.1007/s13233-024-00252-y","DOIUrl":"10.1007/s13233-024-00252-y","url":null,"abstract":"<div><p>In this paper, rhodamine 6G and carborane were used as raw materials, and four fluorescent polymers were prepared by one-pot method, namely L100-55 fluorescent polymer (<b>L100-55-B</b>), EPO polymer (<b>EPO-B</b>), RS polymer (<b>RS</b>) and RL polymer (<b>RL</b>). The problem of poor water solubility of carborane was solved and the biocompatibility of rhodamine 6G-<i>nido</i>-carborane was improved. By simulating the release of polymers in different gastrointestinal environments, it was found that the release rate of drugs in the four coating materials was slow and controllable, with good bioavailability. Affected by the properties of the resin, L100-55 and EPO coating had the best release effect in the gastrointestinal tract. In the zeta potential test, the absolute potential values of <b>L100-55-B</b> and <b>EPO-B</b> are stable, both up to 30 mV. Transmission electron microscopy revealed that the drug was uniformly dispersed in the drug carrier material and wrapped into nanospheres with particle sizes below 500 nm. Hela cells were imaged in different acidic environments, and the results showed that the polymer had good affinity with target cells and was closely connected to target cells, indicating good biocompatibility and targeting of the polymer. This design not only solves the bioavailability problem of rhodamine 6G-<i>nido</i>-carborane, but also has a good fluorescence targeting effect.</p><h3>Graphical abstract</h3><p>Rhodamine 6G-<i>nido</i>-carborane coated by four eudragits, L100-55, EPO, RS, and RL, are released in the gastrointestinal environment. Cell imaging under a microscope shows that <b>L100-55-B</b> and <b>EPO-B</b> have a strong affinity for Hela cells. Four coating pathways, the released rhodamine 6G-<i>nido</i>-carborane targets tumor cells and exerts inhibitory effects.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div><p>\u00001. The bioavailability and water solubility of carborane derivatives have been improved.</p><p>2. Rhodamine 6G is used to make the complex visible in vivo, which is convenient for monitoring the drug distribution.</p><p>3. Acrylic resin coating can change drug release performance.</p><p>4. Hela cell imaging experiments display excellent cellular permeability.</p></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 6","pages":"581 - 595"},"PeriodicalIF":2.8,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140662598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}