Journal of Polymer Research最新文献

{"title":"Calamus tenuis fiber reinforced epoxy composites: effect of fiber loading on the tensile, structural, crystalline, thermal and morphological characteristics","authors":"Arup Kar,&nbsp;Dip Saikia,&nbsp;Sivasubramanian Palanisamy,&nbsp;Narayanasamy Pandiarajan","doi":"10.1007/s10965-024-04162-6","DOIUrl":"10.1007/s10965-024-04162-6","url":null,"abstract":"<div><p>This study utilized <i>Calamus tenuis</i> fiber as reinforcement in fiber-reinforced polymer composites, focusing on the structural, crystalline, thermal, tensile, and morphological properties of <i>Calamus tenuis</i> fiber-reinforced epoxy composites (CTF/Epoxy composites). The composites were fabricated using the hand lay-up method, incorporating fiber weight fractions ranging from 0 wt% (neat epoxy) to 25 wt%, increasing in 5 wt% increments. FTIR spectroscopy identified the chemical compounds and functional groups, while XRD analysis confirmed that the crystalline structure of the composites remained unchanged with the addition of <i>Calamus tenuis</i> fibers. Thermogravimetric analysis (TGA) revealed that the 10 wt% CTF/Epoxy composite exhibited the highest thermal stability among the tested compositions. Differential Scanning Calorimetry (DSC) analysis indicated an increased glass transition temperature (T_g) in the 10 wt% CTF/Epoxy composite, further confirming improved thermal stability. Notably, the 10 wt% fiber content led to significant improvements in tensile properties, with tensile strength increasing from 17.5 ± 1.42 MPa to 21.08 ± 1.03 MPa, and Young’s modulus rising from 2.53 ± 0.12 GPa to 2.84 ± 0.09 GPa. Scanning Electron Microscopy (SEM) demonstrated enhanced fiber-epoxy bonding, while Atomic Force Microscopy (AFM) indicated increased roughness with higher fiber loadings. Overall, the 10 wt% CTF/Epoxy composite shows substantial potential for structural and infrastructure applications.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polymer blend compositions reliant comprehensive study on optical, thermal, structural, and broadband dielectric and electrical properties of P(VDF-HFP)/PMMA films","authors":"Chandra Prabha Charan,&nbsp;R. J. Sengwa","doi":"10.1007/s10965-024-04176-0","DOIUrl":"10.1007/s10965-024-04176-0","url":null,"abstract":"<div><p>In developing flexible type advanced electrical and electronic devices, rationally designed excellent performance polymer dielectrics are highly admired in technological industries. To contribute in this field, herein, the entire composition ratios polymer blend (PB) films of poly(vinylidenefluoride-co-hexafluoropropylene) (P(VDF-HFP)) and poly(methyl methacrylate) (PMMA) are prepared following the solution-cast procedure. The prepared PB films are designated as <i>x</i>P(VDF-HFP)/(100-<i>x</i>)PMMA, where <i>x</i> is varied, in steps, as 100, 80, 50, 20, and 00 wt%. The optical, thermal, structural, and broadband dielectric and electrical properties of these PB films are characterized in detail employing advanced instruments and interpreted meaningfully with blend compositions. The ultraviolet–visible (UV–Vis) spectroscopic results confirmed predominantly composition tunable UV absorbance as well as energy bandgap values of these PB films, which decreased when the P(VDF-HFP) amount was relatively reduced. Differential scanning calorimetry (DSC) measurements explained the reduction in the degree of crystallinity and crystallite thermal stability on decreasing the P(VDF-HFP) amount in the blend and also their transformation to amorphous type miscible blend for the compositions having PMMA amount exceeding 60 wt%. The Fourier transform infrared (FTIR) spectra also elucidated the formation of miscible blends for PMMA-rich compositions owing to a large increase in heterogeneous hydrogen bonding. The broadband dielectric spectroscopic measurements over the nine decades of harmonic electric field frequency (20 Hz to 1 GHz range) unveiled the contribution of various polarization processes and their alteration with frequencies that govern the dielectric permittivity and its dispersion, and different relaxations related to the structural dynamics of the blended polymers. The outcome provides a facile strategy to realize the composition reliant dielectric and optical properties of P(VDF-HFP)/PMMA blend films and helps in proposing their feasible applications as innovative optical and dielectric materials for flexible technologies.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pyrazine substituted chitosan: an adsorbent material for the efficient removal of anionic dyes from aqueous solutions","authors":"S. M Anush,&nbsp;C. S Kaliprasad,&nbsp;Gangadhar Gowda P H,&nbsp;B. H Gayathri,&nbsp;Y. R Girish,&nbsp;K Prashantha,&nbsp;Subramaniyan Ramasundaram,&nbsp;Mohammad Altaf,&nbsp;Tae Hwan Oh,&nbsp;Mani Durai","doi":"10.1007/s10965-024-04173-3","DOIUrl":"10.1007/s10965-024-04173-3","url":null,"abstract":"<div><p>In the present work, a novel pyrazine based chitosan material was synthesized by functionalizing chitosan with chloroacetyl chloride and further modification with ethylene 1,2 diamine, thus a polymer matrix is obtained. Further the adsorbent material was characterized and verified using analytical techniques such as XRD, SEM, FTIR and TGA. The adsorbent material was analyzed for the adsorptive take-up process with a initial dye concentration varying from 20–100 mgL⁻¹ and the adsorptive process occurred due to the electrostatic interaction between the nitrogen atom of chitosan and the methyl orange dye molecule. The equilibrium adsorptive capacity obtained for the synthesized adsorbent material was 45.45 mg g⁻¹. The adsorptive mechanism predicted the electrostatic interaction between the two atoms and the increased in the adsorption efficiency is contributed by the increased number of hetero atoms in the chitosan structure and the adsorption kinetics was found to be pseudo-second-order kinetics and with a monolayer coverage process indicating the Langmuir adsorption isothermal fit. Further, the evaluated thermodynamic parameters showed the adsorption process to be non-spontaneous and endothermic in nature. A regeneration and reusability study was achieved for the composite material using convenient stripping solutions and the adsorbent was successfully regenerated.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10965-024-04173-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of shear resistance of dendritic hydrophobic association polymers","authors":"Shijie Zhu,&nbsp;Mei Xu,&nbsp;Shuanglai Yang,&nbsp;Zhuangzhuang Huang,&nbsp;Yang Wang,&nbsp;Yong Zhu","doi":"10.1007/s10965-024-04177-z","DOIUrl":"10.1007/s10965-024-04177-z","url":null,"abstract":"<div><p>Enhancing the shear resistance of polymer systems is crucial for advancing oil recovery in the realm of chemical flooding technology. This article presents a comparative analysis of the rheological curves, hydrodynamic dimensions, dynamic adsorption, and permeation characteristics of two independently synthesized dendritic hydrophobic association polymers (DHAP) and linear polyacrylamide (HPAM), both before and after exposure to shear in porous media. The research findings indicate that linear polymer solutions exhibit inadequate shear resistance. Through the synergistic effects of association and branching structures, dendritic hydrophobic polymer solutions can partially recover their spatial configuration, thereby mitigating the impact of shear on their solution properties, including viscoelasticity, hydrodynamic size, and adsorption capacity. These polymers can achieve high dynamic retention in porous media and establish flow control capabilities through the residual resistance coefficient. Consequently, further optimization of the molecular structure and the application of non-covalent bonding forces to enhance shear resistance and adsorption retention capacity represent key directions for the future development of polymer systems.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the excellent adsorption performance for lead ions of (sodium alginate/ waste para-aramid)-based polymer composite functionalized by ethylene diamine tetra (methylene phosphonic acid)","authors":"Wansong Zhang,&nbsp;Feifei Li,&nbsp;Ping Yin,&nbsp;Zhenglong Yang,&nbsp;Yanbin Xu,&nbsp;Feng Wang,&nbsp;Ying Wang,&nbsp;Wenjuan Sun,&nbsp;Honglan Cai","doi":"10.1007/s10965-024-04158-2","DOIUrl":"10.1007/s10965-024-04158-2","url":null,"abstract":"<div><p>With the rapid development of industry, efficient removal of heavy metal ions such as lead ions in wastewater has been attracted much attention in the fields of water treatment and environmental remediation. Herein, a novel polymer composite adsorbent material EDTMPA-P/A has been successfully prepared through the combination of sodium alginate and waste para aramid using low-temperature esterification method, and the subsequent modification of EDTMPA (ethylene diamine tetra (methylene phosphonic acid)). The static saturation adsorption experiment verified that EDTMPA-P/A had significant adsorption performance for lead ions, hence, EDTMPA-P/A has been employed to adsorb lead ions from aqueous solutions, and the relevant adsorption behaviors of the polymer composite adsorbent for lead ions have been investigated in detail. The adsorption isotherm of EDTMPA-P/A was consistent with the Langmuir isotherm model, and the corresponding kinetics data were well fitted by the pseudo-second-order kinetic model. The maximum adsorption capacity of EDTMPA-P/A obtained by Langmuir isotherm for lead ions was 315.46 mg/g at 35 °C, which was much higher than other adsorbents reported in the literatures. Moreover, the adsorption thermodynamic parameters Δ<i>G</i>, Δ<i>H</i> and Δ<i>S</i> of EDTMPA-P/A for lead ions were 1.92 kJ mol⁻¹ (35 °C), 14.69 kJ mol⁻¹, and 41.74 J K⁻¹ mol⁻¹, respectively. The research results indicated that EDTMPA-P/A could be evaluated as a novel efficient adsorbent with high efficiency in wastewater treatment and removal of lead ions, and it is great application prospect that EDTMPA-P/A with facile esterification synthesis at low temperature, modification process and excellent adsorption performance, therefore, could be used as a high efficient adsorbent for lead ions removal, which also has simultaneously achieved the reuse object of waste para aramid.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanofillers tailored polymers and enhanced synergistic properties for engineering applications: A review","authors":"Biniam Tamrea Gebretsadik,&nbsp;Addisu Negash Ali","doi":"10.1007/s10965-024-04165-3","DOIUrl":"10.1007/s10965-024-04165-3","url":null,"abstract":"<div><p>Polymers tailored with different nanofillers are potentially used to fill the gaps of conventional materials for various engineering applications. This can be done because of the exceptional synergistic properties of nanofillers and polymers. Nanofillers have unique mechanical, electrical, and thermal properties. They can be reinforced with the flexible polymer matrix to develop advanced polymer nanocomposites and achieve great engineering performance. The nanofillers tailored nanocomposite have enhanced synergistic properties and functionality, which make it suitable for various engineering applications such as automotive, structural health monitoring, aerospace, coating, electronics devices, biomedical devices, and others. Polymer nanocomposites synthesized using techniques such as in-situ polymerization, the melt intercalation method, the solution intercalation method, and the mixing method showed improved properties. To obtain the polymer nanocomposite with the required quality and performance, we need to consider essential design parameters such as nanofiller types, concentrations, shapes, dispersity, sizes and interfacial relations during the design and optimization processes. The performance and properties of polymer nanocomposites evaluated by using the rheological tests, thermogravimetric analysis (TGA), micromechanical analysis, and dynamic mechanical analysis (DMA) showed the enhanced synergistic properties compared to the pure polymer material.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toward a green economy: Lignin-based hybrid materials as functional additives in flame-retardant polymer coatings","authors":"Marta Goliszek,&nbsp;Beata Podkościelna,&nbsp;Przemysław Rybiński,&nbsp;Izabela Klapiszewska,&nbsp;Tomasz Klepka,&nbsp;Anna Masek,&nbsp;Łukasz Klapiszewski","doi":"10.1007/s10965-024-04169-z","DOIUrl":"10.1007/s10965-024-04169-z","url":null,"abstract":"<div><p>This study describes the combination of unique properties of lignin with TiO₂ as an innovative and effective preparation method for high-performance flame-retardant additives that may be utilized as polymer coatings. The use of lignin resulted in numerous advantages including an increased number of functional groups, satisfactory biocompatibility, low toxicity, and high carbon content. The major benefit of lignin is associated with the reduced carbon footprint of the manufactured product. Lignin can be classified as a natural flame-retardant agent owing to the high amount of char formed during combustion. In turn, TiO₂ exhibits high chemical stability and low operating costs and is considered a non-toxic and environmentally friendly material. During the experiments, commercial TiO₂ in anatase crystallographic form, TiO₂ synthesized from titanyl sulfate hydrate, and kraft lignin as well as organic–inorganic hybrid materials composed of these materials were evaluated as functional additives in epoxy-resin-based polymer coatings (Epidian 601) and their properties were investigated in detail. The cone colorimetry test confirmed that the obtained hybrids are effective flame-retardant additives for polymer coatings, with a notable fire hazard reduction observed for samples containing a synergistic system of titanium oxide and lignin. The coating with lignin was the most effective in fire suppression processes. The conducted thermal and mechanical investigations confirmed good performance properties of the coatings indicating thermal resistance up to 360 °C and Shore D hardness in a range of 80.36–86.28°Sh, accordingly. Optical profilometry investigations show that the lignin/TiO₂ hybrids exhibit a stable topological surface shape as well as good dispersion and uniformity in the polymer matrix. All the conducted tests allowed confirmation that the presence of functional additives in polymer coatings in the form of lignin and TiO₂ can be a promising alternative to non-biodegradable synthetic materials which improve flame-retardant properties.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10965-024-04169-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of pyridine based porous organic polymers as new adsorbents to remove Congo red dye from aqueous media","authors":"Farshad Dastyar,&nbsp;Mohammad Dinari","doi":"10.1007/s10965-024-04166-2","DOIUrl":"10.1007/s10965-024-04166-2","url":null,"abstract":"<div><p>Existence of pollutants in water sources is a global worry that needs the expansion of novel and efficient solutions. This study aimed to synthesize porous organic polymers (POPs) from triazine and di-aminopyridine to effectively eliminate the Congo red (CR) dye from water environments. Two porous organic polymers based on imine (POP-IB) and amine (POP-AB) groups were synthesized from the reaction of diamino-pyridine with trialdehyde for POP-IB and cyanuric chloride for POP-AB. The synthesized POPs were charactized by different techniques and exhibit good thermal and chemical stability, rendering them ideal for the removal of CR dye from aqueous solutions. Additionally, our study examined the optimization process, which involved adjusting various parameters such as pH, time duration, initial dye concentration, and the amount of adsorbent. The study showed that the maximum adsorption capacities for the CR dye were 104 mg g⁻¹ with POP-IB at pH 6 over 240 min, and 63 mg g⁻¹ with POP-AB at pH 5 over 180 min, respectively. Kinetic models suggest that the adsorption of CR dye onto these adsorbents is most accurately described by the pseudo-second-order. Moreover, the Langmuir isotherm provides the closest correlation with the adsorption isotherms for both POPs.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sugarcane bagasse for sustainable development of thermoset biocomposites","authors":"Resego Phiri,&nbsp;Sanjay Mavinkere Rangappa,&nbsp;Suchart Siengchin","doi":"10.1007/s10965-024-04168-0","DOIUrl":"10.1007/s10965-024-04168-0","url":null,"abstract":"<div><p>Lignocellulosic natural fibers are increasingly utilized as reinforcements in thermoset matrix composites, driven by economic and environmental demands. Sugarcane bagasse, a byproduct of the sugar industry, is a particularly promising source of these fibers. This study thus explores the development of sustainable composites by incorporating sugarcane bagasse fibers into bio-epoxy and unsaturated polyester resin matrices. Chemical treatments, including alkali, silane and oxalic acid, were applied to enhance fiber-matrix adhesion and improve mechanical, thermal and physical properties. The physical measurements revealed that chemical modifications of the bagasse have a significant impact on the density, water absorption and wettability of both thermosetting matrices. Additionally, SEM analysis revealed variations in composite morphology, such as brittle matrix failure, fiber breakage, fiber pullouts and voids, with the alkali-treated fibers exhibiting the best fiber-matrix interface for both types of resins. The mechanical testing of the composites reinforced with untreated and chemically treated sugarcane bagasse particulates revealed distinct variations in tensile strength and modulus, flexural strength and modulus, impact strength and hardness cross the different treatments. Superior mechanical performance was observed for the alkali treated specimen. Similarly, from the degradation temperatures and activation energies from the thermal analysis, the alkali treated fibers provided better thermal stability. These findings highlight the potential of sugarcane bagasse in eco-friendly composite design, though further research is needed to optimize treatments for better performance.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved mechanical performance and swelling resistance of ethylene propylene diene monomer/styrene butadiene rubber nanocomposites through the incorporation of graphene oxide as a reinforcing filler","authors":"V. Sivaramakrishnan,&nbsp;S. R. Venkataraman,&nbsp;S. Vishvanathperumal,&nbsp;V. Navaneethakrishnan","doi":"10.1007/s10965-024-04167-1","DOIUrl":"10.1007/s10965-024-04167-1","url":null,"abstract":"<div><p>Graphene oxide (GO) was produced by exfoliating natural flake graphite using Hummers’ method. Using the ionic liquid 1-allyl-3-methyl-imidazolium chloride (AMICl), the surface characteristics of the GO sheets were carefully altered to form nanocomposites containing ethylene-propylene-diene monomer (EPDM), styrene-butadiene rubber (SBR), and functionalized GO (GO-IL). The research showcases the incorporation of a reinforcing filler, GO-IL, as opposed to GO alone, leading to significant improvements in both the mechanical properties and swelling resistance of 80/20 EPDM/SBR blend nanocomposites. The distinctive amphiphilic nature of GO-IL facilitated its interaction with EPDM/SBR, thereby substantially enhancing the mechanical properties and swelling resistance of the composite system. With incorporation of only 6 phr GO-IL, the tensile strength and stress at 100% elongation of EPDM/SBR blend increased by 257% and 135%, respectively. This study indicates that GO-IL holds promise as a viable reinforcing filler for EPDM/SBR blends.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}