Macromolecular Research最新文献

{"title":"Synthesis and anode properties of co-oligomers containing 3,4-diphenyl-1,1-disubstituted-2,5-silolene and ethynylene for lithium-ion secondary batteries","authors":"Ji Hoon Lee,&nbsp;Young Tae Park","doi":"10.1007/s13233-023-00228-4","DOIUrl":"10.1007/s13233-023-00228-4","url":null,"abstract":"<div><p>The Stille coupling of co-oligomerizations of 2,5-dibromo-3,4-diphenyl-1,1-disubstituted-siloles (R = <i>i</i>-Pr, <i>n</i>-Hex, Ph; Ia<i>–</i>c) with bis(tributylstannyl)acetylene (<b>II</b>) in the presence of PdCl₂(PPh₃)₂ as catalyst and toluene as solvent yielded oligo[(3,4-diphenyl-1,1-disubstitued-2,5-silolene)-<i>alt</i>-(ethynylene)]s (R = <i>i</i>-Pr, <i>n</i>-Hex, Ph; <b>III</b><b>a</b><i>–</i><b>c</b>) as black solids. Co-oligomeric materials <b>IIIa</b><i>–</i><b>c</b> were characterized with several spectroscopic methods: nuclear magnetic resonance, Fourier-transform infrared, and ultraviolet–visible spectroscopies. Moreover, the thermal stability and anode properties of the fabricated lithium-ion secondary battery were analyzed. Compounds IIIa–c were stable up to 180 °C without weight loss under nitrogen. The coin cells fabricated using <b>IIIa</b>–<b>c</b> as active anode materials exhibited a reversible process after the 2nd cycle in their cyclic voltammograms. The co-oligomer <b>IIIa</b> showed good anodic properties for lithium-ion secondary battery. With an increase in the current density from 0.1 to 0.2, 0.5, 1, 2, 5, and 10 C, the capacity decreased from 2264 to 451, 361, 318, 292, 248, and 214 mAh g⁻¹, respectively. With a decrease in the current density to 1 C, the capacity returned to 287 mAh g⁻¹ at the 33rd cycle and 309 mAh g⁻¹ at the 38th cycle, indicating a lower reduction rate and superior capacity recovery rate of 97% with respect to the initial value of 318 mAh g⁻¹. The long-cycle performance of <b>IIIa</b> exhibited good anodic property of charge capacities at 1 C; 1602, 494, 391, 346, 364, 435, 528, 625, and 725 mAh g⁻¹ at the 1st, 2nd, 3rd, 50th, 100th, 200th, 300th, 400th, and 500th cycles, respectively. The anodic property of the cell fabricated using the co-oligomer <b>IIIa</b>-Li was generally superior to those of <b>IIIb</b> and <b>IIIc</b>. Therefore, <b>IIIa</b>-Li has the feasibility to be used in lithium-ion secondary batteries.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 2","pages":"111 - 119"},"PeriodicalIF":2.8,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094083","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":"Biocompatible membrane from the natural rubber-grafted-(2-hydroxyethyl methacrylate) and its metal removal application","authors":"Thu Ha Nguyen,&nbsp;Thi Lan Pham,&nbsp;Anh Quan Cao,&nbsp;Tuan Anh Nguyen,&nbsp;Xuan Minh Vu,&nbsp;Thi My Hanh Le,&nbsp;Van Thuan Le,&nbsp;Seiichi Kawahara,&nbsp;Dai Lam Tran","doi":"10.1007/s13233-023-00232-8","DOIUrl":"10.1007/s13233-023-00232-8","url":null,"abstract":"<div><p>This study describes the preparation and characterization of a green and safe membrane based on a natural polymer for metal adsorption. Natural rubber-grafted-(2-hydroxyethyl methacrylate) with a special nanostructure was synthesized by graft copolymerization of 2-hydroxyethyl methacrylate (HEMA) onto the surface of natural rubber (NR) particles using <i>tert</i>-butylhydroperoxide/tetraethylenepentamine as initiators. Optimal conditions for achieving high conversion and grafting efficiency were identified. Characterization of the as-synthesized samples was performed using Fourier-transform infrared spectroscopy, transmission electron microscopy, thermogravimetric analysis, tensile measurement, swelling degree determination, and cytotoxicity testing. The results revealed that HEMA formed a nanoscale matrix surrounding NR particles, which improved the tensile strength, thermal resistance, and swelling degree of the as-prepared samples. Cytotoxicity testing demonstrated that the membrane was safe for human use, as it did not exhibit toxicity to Vero cells at concentrations up to 1024 µg/mL. Furthermore, the membrane displayed a high adsorption capacity toward Fe³⁺ and was well described by Koble-Corrigan isotherm model and the first–second-order kinetic equation. Moreover, the membrane demonstrated excellent recyclability maintaining its adsorption ability towards Fe³⁺ ions over five consecutive cycles. Overall, these findings may recommend the NR-HEMA membrane as a promising candidate for metal removal applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>The adsorption of metal ions on the natural rubber with PHEMA matrix</p></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 4","pages":"313 - 324"},"PeriodicalIF":2.8,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094003","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":"Activated carbon derived from silk sericin for efficient adsorption of methylene blue in aqueous solutions","authors":"Shiwei Li,&nbsp;Mengyan Li,&nbsp;Xiaoning Zhang","doi":"10.1007/s13233-023-00237-3","DOIUrl":"10.1007/s13233-023-00237-3","url":null,"abstract":"<div><p>The silk sericin (SS) recovered from silk degumming wastewater can be used to develop carbonaceous materials for organic dye removal from wastewater. To improve the adsorption capacity of the carbonaceous adsorbents derived from SS, KOH was used as an activation agent. The maximum adsorption capacity of SS-based activated carbon on methylene blue (MB) was determined by batch adsorption experiments as 964.63 mg/g. Mathematical models of adsorption were studied to reveal the adsorption mechanism. According to adsorption kinetics analysis, a pseudo-second-order model describes the adsorption performance of SS-based activated carbon on MB more appropriately, and the adsorption process follows the Langmuir model. The activated carbon prepared from SS in this work demonstrated improved MB adsorption capacity compared with other SS-based carbonaceous materials and therefore presented prosperous application possibilities for removing organic dyes from wastewater.</p><h3>Graphical abstract</h3><p>Creation and application of silk sericin-derived activated carbon. The silk sericin was first enriched from the silk degumming wastewater, then was converted into activated carbon by heating and activation. The generated activated carbon was later used for the adsorption of methylene blue from aqueous solutions through electrostatic and π-π interactions\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 5","pages":"443 - 452"},"PeriodicalIF":2.8,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139092966","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":"Bioactive polymers for cosmetics: unleashing the potential of Chromohalobacter canadensis 28","authors":"Merve Erginer,&nbsp;Songül Yaşar Yıldız,&nbsp;Margarita Kambourova,&nbsp;Ebru Toksoy Öner","doi":"10.1007/s13233-023-00236-4","DOIUrl":"10.1007/s13233-023-00236-4","url":null,"abstract":"<div><p>The growing demand for natural products in the cosmetic industry has led to increased interest in natural polysaccharides that offer biocompatibility, biodegradability, and bioactivity. Microorganisms have emerged as a promising source for large-scale production of these polysaccharides under controlled conditions. Among them, the halophilic bacterium <i>Chromohalobacter canadensis</i> 28 stands out as it produces an exopolymer (Cc EP) consisting of exopolysaccharides (EPS) and poly-gamma-glutamic acid (γ-PGA), making it the first halophilic microorganism known for PGA production. This study explores the potential of crude Cc EP and purified γ-PGA for improving the skin barrier, stimulating collagen and hyaluronic acid production, and facilitating wound closure. Through in-vitro experiments using human epidermal keratinocyte cells (HaCaT) and dermal fibroblast cells (PCS-201-012), both the exopolymers were found to exhibit positive effects on cellular proliferation and the expression of genes related to collagen, hyaluronic acid, involucrin, and filaggrin. Furthermore, in-vitro scratch models demonstrated their ability to enhance wound closure. Based on these promising findings, we propose that Cc EP and purified γ-PGA hold potential as active ingredients in cosmeceutical products. Their ability to promote cell proliferation, improve collagen and hyaluronic acid expression, and enhance wound closure makes them valuable assets for skincare applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>Production and effect of <i>Chromohalobacter canadensis</i> 28 exopolymer on human skin cells</p></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 4","pages":"325 - 336"},"PeriodicalIF":2.8,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139092965","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":"Grafting of perylene and naphthalene fluorophores onto chitosan for improved thermal, optical and electrical properties","authors":"Selin Temurlu,&nbsp;Mosab A. A. Abureesh,&nbsp;Arwa Abourajab,&nbsp;Pelin Karsili,&nbsp;Meltem Dinleyici,&nbsp;Sinem Altınışık,&nbsp;Sermet Koyuncu,&nbsp;Huriye Icil","doi":"10.1007/s13233-023-00233-7","DOIUrl":"10.1007/s13233-023-00233-7","url":null,"abstract":"<div><p>The grafting of <i>N</i>-(4-hydroxyphenyl)-3,4,9,10-perylenetetracarboxylic-3,4-anhydride-9,10-imide (<b>4</b>) and <i>N</i>-(4-hydroxyphenyl)-1,4,5,8-naphthalenetetracarboxylic-1,8-anhydride-4,5-imide (<b>8</b>) onto low-molecular-weight chitosan (<b>5</b>) was performed. The fluorescence, stability, electroactivity, conductivity, and solubility properties of the grafted chitosan polymer <b>9</b> were highly enhanced compared to the original chitosan. The weight-average molecular weight (<i>M</i>_w) of 19,800 g/mol was obtained. Grafted chitosan has even more excellent thermal stability with a higher initial decomposition temperature of 285 °C and char yield at 900 °C up to 73%. The fluorescence quantum yield efficiencies for polymer <b>9</b> are very high in all studied solvents (70% in CH₃CN). The polymer showed five stepwise, fast, reversible one-electron reductions in electrochemical investigations due to the conductive fluorophores <b>4</b> and <b>8</b>. The HOMO/LUMO levels were calculated as − 5.56 and − 4.14 eV, corresponding to the low band gap of 1.42 eV. The spectroelectrochemistry investigations confirmed the nature of the electron transfers. The morphological characterization using AFM, SEM, and TEM methods indicated a highly crystalline character of the grafted chitosan. The modified chitosan has the potential to be applied in various organic photonics and as a significant substrate material.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>Grafted chitosan polymers combining high crystalline character and excellent fluorescence, electroactivity and conductivity are promising candidates for photonic applications</p></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 4","pages":"281 - 297"},"PeriodicalIF":2.8,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139094048","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 hexagonal boron nitride polymer systems with one-step sol–gel synthesis for pH-controlled drug delivery","authors":"Fatih Ozcan,&nbsp;Esra Maltas Cagil","doi":"10.1007/s13233-023-00231-9","DOIUrl":"10.1007/s13233-023-00231-9","url":null,"abstract":"<div><p>In this work, new pH-sensitive hexagonal boron nitride–polysaccharides nanosystems were produced using sol–gel method. These hybrid sol–gel systems include β-cyclodextrin (β-CD), dextrin (Dex), shellac wax (Wax), and polyethylene glycol which were synthesized with hexagonal boron nitride (<i>h-</i>BN) by coupling of triethyl orthosilicate and donepezil. The release studies of DNP from each sol–gel systems were studied using buffers at various pH levels such as 2.2, 4.0, 6.0, 7.4, and 8.6. The release percentages of the drug were calculated by regression equations of the DNP which has maximum fluorescence intensity at 325 and 387 nm excitation and emission wavelengths. These new sol–gel hexagonal boron nitride systems were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, and scanning electron microscopy analysis. According to the results. The sol–gel systems with polysaccharide-based dextrin (<i>h-</i>BN–Dex) and shellac wax (<i>h-</i>BN–Wax) were more available at a pH levels of 6, 7.4, and 8.6 for the release of DNP.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 4","pages":"337 - 348"},"PeriodicalIF":2.8,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138949104","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":"Controlling properties of thermoplastic polyurethane-based foam through adopting different type of oligomers","authors":"Sanghyun Park,&nbsp;Kyung Jin Lee","doi":"10.1007/s13233-023-00227-5","DOIUrl":"10.1007/s13233-023-00227-5","url":null,"abstract":"<div><p>Thermoplastic polyurethane (TPU) has been widely utilized in varied fields due to their excellent properties such as flexibility, stretchability, thermal stability, resilience, etc. However, it is relatively difficult to control their properties comparing to PU because most of TPU properties are decided in synthetic level. Herein, aromatic polyols were introduced into desired TPU in synthetic level to overcome the issue and improve mechanical properties of TPU. Furthermore, the optimization condition is suggested by controlling the molar ratio of aliphatic/aromatic polyols. Finally, porous TPU sheets were fabricated via VIPS method using synthesized TPU. Tensile and compression testing were executed to compare the mechanical properties of each TPU and porous TPU sheet according to the molar ratio of aliphatic/aromatic polyols.</p><h3>Graphical Abstract</h3><p>The structure of thermoplastic polyurethane synthesized from aliphatic &amp; aromatic polyols with the appearance of each segment in a molecule</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 3","pages":"273 - 280"},"PeriodicalIF":2.8,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13233-023-00227-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138948731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The fabrication of aminoquinoline-functionalized polydiacetylene-based hybrid vesicles with partially reversible thermochromic property","authors":"Yue Gao,&nbsp;Zhiguo Zhao,&nbsp;Xiaojie Huang,&nbsp;Huan Xing,&nbsp;Guang Yang","doi":"10.1007/s13233-023-00225-7","DOIUrl":"10.1007/s13233-023-00225-7","url":null,"abstract":"<div><p>The development of smart materials with reversible thermochromic properties is of great importance in the fields of sensors, displays and anticounterfeitings. In this article, a diacetylene monomer (AQDA) containing aminoquinoline as a head group was synthesized. Together with fluorescein-substituted diacetylene (FDA) and 10,12-pentacosadiynoic acid (PCDA), hybrid PDA vesicles were obtained through self-assembly and topochemical polymerization process. The hybrid PDA vesicles (FDA, AQDA and PCDA with molar ratio of 7:2:1) display an partially reversible green-to-orange red colorimetric change in a wider temperature range from 20 to 100 °C focusing on the stronger hydrogen bonding and aromatic interactions. This work may provide fundamental understanding of the mechanism and strategies for the design of reversible thermochromic PDA materials.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>A PDA derivative aminoquinoline-substituted polydiacetylene (AQDA) was introduced and it displays an intriguing reversible thermochromism with a green-to-orange red color transition at a wider temperature range from 20-100 oC in solution by the strong hydrogen bonding and aromatic interactions of the headgroups.</p></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 3","pages":"253 - 259"},"PeriodicalIF":2.8,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138821349","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":"Tuning the distribution of carbon nanotubes in styrene–acrylonitrile copolymer by a small amount of polycarbonate","authors":"Junmin Lee,&nbsp;Hyungsu Kim","doi":"10.1007/s13233-023-00229-3","DOIUrl":"10.1007/s13233-023-00229-3","url":null,"abstract":"<div><p>In this study, we added a small amount of polycarbonate (PC), ranging from 1 to 9 wt%, to the composites of styrene–acrylonitrile copolymer (SAN) and multiwalled carbon nanotube (MWNT). When two types of SANs having 24 and 32 wt% AN (SAN24 and SAN32) were used, we found that the resistivity of the SAN/MWNT (0.5 wt%) composites significantly decreased with the addition of 1–3% of PC, and the effect was more pronounced in the case of SAN32. Transmission electron microscopy (TEM) images revealed that MWNTs, which were uniformly distributed on the pure SAN, tended to agglomerate and form an interconnected structure when an appropriate amount of PC was added. The reduced resistivity of the composites is mainly attributed to the connectivity of MWNTs facilitating electron transport. It is worth noting that the network structure disappears when the amount of PC exceeds 5 wt%, where the size of PC domains grows, and most of the MWNTs are entrapped in the PC phase, resulting in an increased resistivity of the composite. The rheological investigation of the composites revealed that the storage moduli of the composites were sensitive to the state of MWNT distribution, which was greatly altered by the type of SAN and the amount of PC.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>Alteration of carbon nanotubes distribution in styrene–acrylonitrile due to the introduction of polycarbonate</p></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 4","pages":"349 - 358"},"PeriodicalIF":2.8,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138817697","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":"Classifications, synthesis and applications of biodegradable pseudo-proteins: a review","authors":"Yunjiao Xue,&nbsp;Yang Liu,&nbsp;Xuan Zhang,&nbsp;Min Sun,&nbsp;Yuhuan Chen,&nbsp;Fang Yang","doi":"10.1007/s13233-023-00217-7","DOIUrl":"10.1007/s13233-023-00217-7","url":null,"abstract":"<div><p>Pseudo-protein is a novel synthetic biodegradeable material that has amino acids as the basic structural unit. Unlike protein, this polymer has other linking groups in addition to peptide bonds in their structure, which provide not only the excellent properties of protein, but also good mechanical properties, thermal properties, adjustable physicochemical properties, excellent cytocompatibility, 3D microporous structure, etc. Therefore, pseudo-proteins can be effectively applied in carriers, wound healing, tissue engineering, etc. This review summarizes the recent advances in the development of pseudo-proteins, the main classifications and the synthetic methods used in their preparation along with their main applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":688,"journal":{"name":"Macromolecular Research","volume":"32 2","pages":"91 - 110"},"PeriodicalIF":2.8,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138743719","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}