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[PMID]:27770416
[Au] Autor:Besic S; Minteer SD
[Ad] Endereço:Department of Chemistry, Saint Louis University, Saint Louis, MO, 63103, USA.
[Ti] Título:Micellar Polymer Encapsulation of Enzymes.
[So] Source:Methods Mol Biol;1504:93-108, 2017.
[Is] ISSN:1940-6029
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Although enzymes are highly efficient and selective catalysts, there have been problems incorporating them into fuel cells. Early enzyme-based fuel cells contained enzymes in solution rather than immobilized on the electrode surface. One problem utilizing an enzyme in solution is an issue of transport associated with long diffusion lengths between the site of bioelectrocatalysis and the electrode. This issue drastically decreases the theoretical overall power output due to the poor electron conductivity. On the other hand, enzymes immobilized at the electrode surface have eliminated the issue of poor electron conduction due to close proximity of electron transfer between electrode and the biocatalyst. Another problem is inefficient and short term stability of catalytic activity within the enzyme that is suspended in free flowing solution. Enzymes in solutions are only stable for hours to days, whereas immobilized enzymes can be stable for weeks to months and now even years. Over the last decade, there has been substantial research on immobilizing enzymes at electrode surfaces for biofuel cell and sensor applications. The most commonly used techniques are sandwich or wired. Sandwich techniques are powerful and successful for enzyme immobilization; however, the enzymes optimal activity is not retained due to the physical distress applied by the polymer limiting its applications as well as the non-uniform distribution of the enzyme and the diffusion of analyte through the polymer is slowed significantly. Wired techniques have shown to extend the lifetime of an enzyme at the electrode surface; however, this technique is very hard to master due to specific covalent bonding of enzyme and polymer which changes the three-dimensional configuration of enzyme and with that decreases the optimal catalytic activity. This chapter details encapsulation techniques where an enzyme will be immobilized within the pores/pockets of the hydrophobically modified micellar polymers such as Nafion and chitosan. This strategy has been shown to safely immobilize enzymes at electrode surfaces with storage and continuous operation lifetime of more than 2 years.
[Mh] Termos MeSH primário: Quitosana/análogos & derivados
Enzimas Imobilizadas/química
Polímeros de Fluorcarboneto/química
Micelas
[Mh] Termos MeSH secundário: Aminação
Fontes de Energia Bioelétrica
Técnicas Biossensoriais
Eletrodos
Interações Hidrofóbicas e Hidrofílicas
Oxirredução
Porosidade
Compostos de Amônio Quaternário/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Enzymes, Immobilized); 0 (Fluorocarbon Polymers); 0 (Micelles); 0 (Quaternary Ammonium Compounds); 39464-59-0 (perfluorosulfonic acid); 9012-76-4 (Chitosan)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180115
[Lr] Data última revisão:
180115
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161023
[St] Status:MEDLINE


  2 / 1655 MEDLINE  
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[PMID]:28740040
[Au] Autor:Kawano Y; Otsu S; Bamba T; Hanawa T
[Ad] Endereço:Faculty of Pharmaceutical Sciences, Tokyo University of Science.
[Ti] Título:[Study of Interaction between Fluorinated Coating Glass and the Medicines].
[So] Source:Yakugaku Zasshi;137(11):1409-1417, 2017 Nov 01.
[Is] ISSN:1347-5231
[Cp] País de publicação:Japan
[La] Idioma:jpn
[Ab] Resumo:The adsorption of active pharmaceutical ingredients on the surface of medical devices such as polyvinl chloride, ethylene-vinyl acetate copolymer and glass often prevent the acuurate dose of drug. At dispensing of pharmaceuticals, mètre glass (MG) has been widely used for dispensing syrup. When measuring the viscous syrup, it often takes long time to dispense the accurate volume due to their adhesiveness on the glass surface. In this study, we investigate the adhesion of various syrups to MG made with uncoated glass or glass with a strongly hydrophobic silicone or fluorinated coating in terms of the following formulation parameters: viscosity, surface tension, contact angle, and surface free energy. The contact angles for syrups on the coated glass surfaces were significantly higher than those on the uncoated glass surface. In addition, the relationship between surface tension and contact angle was examined. We found that the contact angle was independent of surface tension for the uncoated glass, while it increased with increasing surface tension for the coated glasses. These results can be explained as follows: the silicone or fluorinated coatings inhibit the hydrogen bonding that usually takes place between water and silanol and siloxane groups at glass surfaces. The coatings reduced the surface free energy and increased the hydrophobicity of the glass, reduced its wettability by the syrups, and thus reduced the adhesion loss for the syrups. It was considered that as for the hydrophobic action, properties of matter of sample influence the coated device by coating in order that it is reinforced.
[Mh] Termos MeSH primário: Adesividade
Formas de Dosagem
Polímeros de Fluorcarboneto
Vidro
Interações Hidrofóbicas e Hidrofílicas
Propriedades de Superfície
[Mh] Termos MeSH secundário: Ligações de Hidrogênio
Silanos
Silicones
Siloxanas
Viscosidade
Água
Molhabilidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dosage Forms); 0 (Fluorocarbon Polymers); 0 (Silanes); 0 (Silicones); 0 (Siloxanes); 059QF0KO0R (Water); 079V3J9O3X (silanol)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180103
[Lr] Data última revisão:
180103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170726
[St] Status:MEDLINE
[do] DOI:10.1248/yakushi.17-00108


  3 / 1655 MEDLINE  
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[PMID]:28834605
[Au] Autor:Saravanakumar D; Song J; Lee S; Hur NH; Shin W
[Ad] Endereço:Department of Chemistry, School of Advanced Sciences, VIT University, Vellore, 632014, India.
[Ti] Título:Electrocatalytic Conversion of Carbon Dioxide and Nitrate Ions to Urea by a Titania-Nafion Composite Electrode.
[So] Source:ChemSusChem;10(20):3999-4003, 2017 Oct 23.
[Is] ISSN:1864-564X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:CO and nitrate ions were successfully converted to urea by a TiO -Nafion nanocomposite electrode under ambient conditions. The composite electrode was constructed by dropcasting the mixture of P25 titania and Nafion solution on an indium-doped tin oxide (ITO) electrode. When the electrode was electrolyzed in CO -saturated 0.1 m KNO (pH 4.5) solution at -0.98 V versus Ag/AgCl, urea was formed with a Faradaic efficiency of 40 %. The other reduced products obtained were NH , CO, and H .
[Mh] Termos MeSH primário: Dióxido de Carbono/química
Polímeros de Fluorcarboneto/química
Nanocompostos/química
Nitratos/química
Titânio/química
Ureia/química
[Mh] Termos MeSH secundário: Catálise
Eletroquímica
Eletrodos
Nanopartículas/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fluorocarbon Polymers); 0 (Nitrates); 142M471B3J (Carbon Dioxide); 15FIX9V2JP (titanium dioxide); 39464-59-0 (perfluorosulfonic acid); 8W8T17847W (Urea); D1JT611TNE (Titanium)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170824
[St] Status:MEDLINE
[do] DOI:10.1002/cssc.201701448


  4 / 1655 MEDLINE  
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[PMID]:28732010
[Au] Autor:Carrel M; Beltran MA; Morales VL; Derlon N; Morgenroth E; Kaufmann R; Holzner M
[Ad] Endereço:Institute of Environmental Engineering, ETH Zürich, Stefano Franscini-Platz 5, 8093 Zurich, Switzerland.
[Ti] Título:Biofilm imaging in porous media by laboratory X-Ray tomography: Combining a non-destructive contrast agent with propagation-based phase-contrast imaging tools.
[So] Source:PLoS One;12(7):e0180374, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:X-ray tomography is a powerful tool giving access to the morphology of biofilms, in 3D porous media, at the mesoscale. Due to the high water content of biofilms, the attenuation coefficient of biofilms and water are very close, hindering the distinction between biofilms and water without the use of contrast agents. Until now, the use of contrast agents such as barium sulfate, silver-coated micro-particles or 1-chloronaphtalene added to the liquid phase allowed imaging the biofilm 3D morphology. However, these contrast agents are not passive and potentially interact with the biofilm when injected into the sample. Here, we use a natural inorganic compound, namely iron sulfate, as a contrast agent progressively bounded in dilute or colloidal form into the EPS matrix during biofilm growth. By combining a very long source-to-detector distance on a X-ray laboratory source with a Lorentzian filter implemented prior to tomographic reconstruction, we substantially increase the contrast between the biofilm and the surrounding liquid, which allows revealing the 3D biofilm morphology. A comparison of this new method with the method proposed by Davit et al (Davit et al., 2011), which uses barium sulfate as a contrast agent to mark the liquid phase was performed. Quantitative evaluations between the methods revealed substantial differences for the volumetric fractions obtained from both methods. Namely, contrast agent-biofilm interactions (e.g. biofilm detachment) occurring during barium sulfate injection caused a reduction of the biofilm volumetric fraction of more than 50% and displacement of biofilm patches elsewhere in the column. Two key advantages of the newly proposed method are that passive addition of iron sulfate maintains the integrity of the biofilm prior to imaging, and that the biofilm itself is marked by the contrast agent, rather than the liquid phase as in other available methods. The iron sulfate method presented can be applied to understand biofilm development and bioclogging mechanisms in porous materials and the obtained biofilm morphology could be an ideal basis for 3D numerical calculations of hydrodynamic conditions to investigate biofilm-flow coupling.
[Mh] Termos MeSH primário: Biofilmes
Tomografia por Raios X/métodos
[Mh] Termos MeSH secundário: Sulfato de Bário
Meios de Contraste
Compostos Ferrosos
Polímeros de Fluorcarboneto
Imagem Tridimensional/métodos
Porosidade
Reologia
Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Contrast Media); 0 (Ferrous Compounds); 0 (Fluorocarbon Polymers); 059QF0KO0R (Water); 25BB7EKE2E (Barium Sulfate); 39464-59-0 (perfluorosulfonic acid); 39R4TAN1VT (ferrous sulfate)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170927
[Lr] Data última revisão:
170927
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170722
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0180374


  5 / 1655 MEDLINE  
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[PMID]:28696071
[Au] Autor:Karam A; De Oliveira Vigier K; Marinkovic S; Estrine B; Oldani C; Jérôme F
[Ad] Endereço:Institut de Chimie des Milieux et Matériaux de Poitiers, CNRS/Université de Poitiers, 1 rue Marcel Doré, ENSIP, TSA 41105, 86073, Poitiers cedex 9, France.
[Ti] Título:Conversion of Cellulose into Amphiphilic Alkyl Glycosides Catalyzed by Aquivion, a Perfluorosulfonic Acid Polymer.
[So] Source:ChemSusChem;10(18):3604-3610, 2017 Sep 22.
[Is] ISSN:1864-564X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The perfluorosulfonic acid (PFSA) Aquivion PW98 is an amphiphilic solid superacid which is shown to catalyze the conversion of cellulose into amphiphilic alkyl glycosides (AAGs) in 85 % yield (with 97 % selectivity). The process involves a mechanocatalytic depolymerization of cellulose followed by a direct glycosylation with n-dodecanol. In comparison to H SO and solid acid catalysts commonly employed in cellulose processing, Aquivion PFSA PW98 is not only recyclable but also exhibits superior catalytic performances in terms of yield, selectivity, and reactor productivity.
[Mh] Termos MeSH primário: Celulose/química
Polímeros de Fluorcarboneto/química
Glicosídeos/química
Interações Hidrofóbicas e Hidrofílicas
[Mh] Termos MeSH secundário: Catálise
Glicosilação
Hidrólise
Fenômenos Mecânicos
Polimerização
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fluorocarbon Polymers); 0 (Glycosides); 39464-59-0 (perfluorosulfonic acid); 9004-34-6 (Cellulose)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170712
[St] Status:MEDLINE
[do] DOI:10.1002/cssc.201700903


  6 / 1655 MEDLINE  
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[PMID]:28622555
[Au] Autor:Zarei K; Khodadadi A
[Ad] Endereço:School of Chemistry, Damghan University, Damghan, Iran. Electronic address: zarei@du.ac.ir.
[Ti] Título:Very sensitive electrochemical determination of diuron on glassy carbon electrode modified with reduced graphene oxide-gold nanoparticle-Nafion composite film.
[So] Source:Ecotoxicol Environ Saf;144:171-177, 2017 Oct.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:In this work, a very sensitive electrochemical sensor based on glassy carbon electrode (GCE) modified with reduced graphene oxide-gold nanoparticles/Nafion (rGO-AuNPs/Nafion) composite film was applied to determine diuron. Synthesized GO was characterized using X-ray diffraction (XRD) and UV-visible spectroscopy. The surface morphology of the rGO-AuNPs/Nafion film was also characterized using scanning electron microscopy and electrochemical impedance spectroscopy. Cyclic voltammetry (CV) and adsorptive differential pulse voltammetry (AdDPV) were applied to investigate the electrochemical response of the diuron on the modified electrode. The electrode showed a linear response at 1.0×10 -1.0×10 M and a detection limit of 0.3nM under the optimized conditions. The effect of some other species on the determination of diuron was investigated and the sensor showed good selectivity for determination of diuron. The constructed sensor was applied to determine diuron in enriched samples of orange juice, mineral and tap water which statistical t-test showed accuracy of method. Also the sensor was applied to obtain diuron content in the tea sample. The reliability of the proposed sensor was confirmed after comparing the results with those obtained using high performance liquid chromatography (HPLC) as a comparative method.
[Mh] Termos MeSH primário: Diurona/análise
Técnicas Eletroquímicas/métodos
Poluentes Ambientais/análise
Polímeros de Fluorcarboneto/química
Ouro/química
Grafite/química
Nanopartículas/química
[Mh] Termos MeSH secundário: Eletrodos
Limite de Detecção
Microscopia Eletrônica de Varredura
Óxidos/química
Reprodutibilidade dos Testes
Propriedades de Superfície
Difração de Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Fluorocarbon Polymers); 0 (Oxides); 39464-59-0 (perfluorosulfonic acid); 7440-57-5 (Gold); 7782-42-5 (Graphite); 9I3SDS92WY (Diuron)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171110
[Lr] Data última revisão:
171110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170617
[St] Status:MEDLINE


  7 / 1655 MEDLINE  
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[PMID]:28349783
[Au] Autor:Henke D; Campbell A; Bradberry SM; Sandilands EA; Thomas SHL; Thompson JP; Vale JA
[Ad] Endereço:a NPIS (Birmingham Unit) , City Hospital , Birmingham , UK.
[Ti] Título:Toxicity from fluoropolymer-containing grout, tile and stone floor sealants reported to the UK National Poisons Information Service 2009-2015.
[So] Source:Clin Toxicol (Phila);55(6):585-588, 2017 Jul.
[Is] ISSN:1556-9519
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:CONTEXT: Grout, tile and floor stone sealants contain a solvent, a water-repelling agent and in the case of aerosols a propellant. The water-repelling agent used is typically a fluoropolymer resin, a silicon-based resin, or a combination of both. OBJECTIVE: To report the clinical course in patients exposed to fluoropolymer-containing sealants referred to the United Kingdom National Poisons Information Service. METHODS: A retrospective analysis was performed of telephone enquiries received between 2009 and 2015. RESULTS: 101 enquiries involving 96 exposures were received. The majority of the exposures (n = 88) occurred when the sealant was delivered from an aerosol. Twelve patients were exposed occupationally and the remainder were exposed while using the product at home. Eighty-nine exposures were as a result of inhalation alone, two followed ingestion, three skin contact and one eye contact; one involved inhalation and eye contact. All 90 patients exposed by inhalation developed clinical features: 31 had a World Health Organisation/International Programme on Chemical Safety/European Commission/European Association of Poison Centres and Clinical Toxicologists Poisoning Severity Score of 1 (minor toxicity), 51 patients had features of moderate toxicity (PSS 2) and eight were graded PSS 3 (severe poisoning). The most common features were dyspnea (n = 52; 57.8%; 95% CI = 47.0-68.5), chest pain/tightness (n = 34; 37.8%; 95% CI = 27.2-48.4), coughing (n = 27; 30.0%; 95% CI = 20.0-40.0) and sinus tachycardia (n = 11; 12.2%; 95% CI = 4.1-18.2); hypoxemia was present in 20 (22.2%; 95% CI = 13.1-31.4). At the time of the enquiry a chest X-ray had been performed on 15 patients: in eight patients (all of whom were PSS 3) the X-ray was reported as being abnormal and showed bilateral shadowing. CONCLUSIONS: This study demonstrates that if fluoropolymer-containing sealants are inhaled then clinical features may occur and in a small proportion (9%) these features may be severe.
[Mh] Termos MeSH primário: Propelentes de Aerossol/envenenamento
Polímeros de Fluorcarboneto/envenenamento
Produtos Domésticos/envenenamento
Exposição Ocupacional/efeitos adversos
Solventes/envenenamento
[Mh] Termos MeSH secundário: Adolescente
Adulto
Criança
Pré-Escolar
Feminino
Seres Humanos
Lactente
Exposição por Inalação/efeitos adversos
Masculino
Meia-Idade
Centros de Controle de Intoxicações/estatística & dados numéricos
Estudos Retrospectivos
Índice de Gravidade de Doença
Reino Unido/epidemiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Aerosol Propellants); 0 (Fluorocarbon Polymers); 0 (Solvents)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170620
[Lr] Data última revisão:
170620
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170329
[St] Status:MEDLINE
[do] DOI:10.1080/15563650.2017.1296154


  8 / 1655 MEDLINE  
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[PMID]:28254326
[Au] Autor:Sun B; Gou X; Bai R; Abdelmoaty AA; Ma Y; Zheng X; Hu F
[Ad] Endereço:School of Pharmacy, Lanzhou University, Lanzhou 730000, China.
[Ti] Título:Direct electrochemistry and electrocatalysis of lobetyolin via magnetic functionalized reduced graphene oxide film fabricated electrochemical sensor.
[So] Source:Mater Sci Eng C Mater Biol Appl;74:515-524, 2017 May 01.
[Is] ISSN:1873-0191
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:A novel lobetyolin electrochemical sensor based on a magnetic functionalized reduced graphene oxide/Nafion nanohybrid film has been introduced in this work. The magnetic functionalized reduced graphene oxide was characterized by fourier transform infrared spectroscopy, atomic force microscope, X-ray diffraction, transmission electron microscopy and thermogravimetric analysis. The scanning electron microscopy characterized the morphology and microstructure of the prepared sensors, and the electrochemical effective surface areas of the prepared sensors were also calculated by chronocoulometry method. The electrochemical behavior of lobetyolin on the magnetic functionalized reduced graphene oxide/Nafion nanohybrid modified glassy carbon electrode was investigated by cyclic voltammetry and differential pulse voltammetry in a phosphate buffer solution of pH6.0. The electron-transfer coefficient (α), electron transfer number (n), and electrode reaction rate constant (Κs) were calculated as 0.78, 0.73, and 4.63s , respectively. Under the optimized conditions, the sensor based on magnetic functionalized reduced graphene oxide/Nafion showed a linear voltammetric response to the lobetyolin concentration at 1.0×10 to 1.0×10 mol/L with detection limit (S/N=3)of 4.3×10 mol/L. The proposed sensor also displayed acceptable reproducibility, long-term stability, and high selectivity, and performs well for analysis of lobetyolin in real samples. The voltammetric sensor was successfully applied to detect lobetyolin in Codonopsis pilosula with recovery values in the range of 96.12%-102.66%.
[Mh] Termos MeSH primário: Técnicas Eletroquímicas
Grafite/química
Magnetismo
Poliacetilenos/análise
[Mh] Termos MeSH secundário: Técnicas Biossensoriais
Catálise
Codonopsis/química
Codonopsis/metabolismo
Eletrodos
Óxido Ferroso-Férrico/química
Polímeros de Fluorcarboneto/química
Concentração de Íons de Hidrogênio
Limite de Detecção
Microscopia de Força Atômica
Microscopia Eletrônica de Varredura
Microscopia Eletrônica de Transmissão
Óxidos/química
Reprodutibilidade dos Testes
Termogravimetria
Difração de Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fluorocarbon Polymers); 0 (Oxides); 0 (lobetyolin); 25067-58-7 (Polyacetylenes); 39464-59-0 (perfluorosulfonic acid); 7782-42-5 (Graphite); XM0M87F357 (Ferrosoferric Oxide)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170614
[Lr] Data última revisão:
170614
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170304
[St] Status:MEDLINE


  9 / 1655 MEDLINE  
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[PMID]:28235744
[Au] Autor:Koók L; Nemestóthy N; Bakonyi P; Zhen G; Kumar G; Lu X; Su L; Saratale GD; Kim SH; Gubicza L
[Ad] Endereço:Research Institute on Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem ut 10, 8200, Veszprém, Hungary. Electronic address: kook@almos.uni-pannon.hu.
[Ti] Título:Performance evaluation of microbial electrochemical systems operated with Nafion and supported ionic liquid membranes.
[So] Source:Chemosphere;175:350-355, 2017 May.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this work, the performance of dual-chamber microbial fuel cells (MFCs) constructed either with commonly used Nafion proton exchange membrane or supported ionic liquid membranes (SILMs) was assessed. The behavior of MFCs was followed and analyzed by taking the polarization curves and besides, their efficiency was characterized by measuring the electricity generation using various substrates such as acetate and glucose. By using the SILMs containing either [C mim][PF ] or [Bmim][NTf ] ionic liquids, the energy production of these MFCs from glucose was comparable to that obtained with the MFC employing polymeric Nafion and the same substrate. Furthermore, the MFC operated with [Bmim][NTf ]-based SILM demonstrated higher energy yield in case of low acetate loading (80.1 J g COD m h ) than the one with the polymeric Nafion N115 (59 J g COD m h ). Significant difference was observed between the two SILM-MFCs, however, the characteristics of the system was similar based on the cell polarization measurements. The results suggest that membrane-engineering applying ionic liquids can be an interesting subject field for bioelectrochemical system research.
[Mh] Termos MeSH primário: Fontes de Energia Bioelétrica
Eletricidade
Polímeros de Fluorcarboneto/química
Líquidos Iônicos/química
Membranas Artificiais
[Mh] Termos MeSH secundário: Acetatos/química
Fontes de Energia Bioelétrica/microbiologia
Eletrodos
Glucose/química
Prótons
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acetates); 0 (Fluorocarbon Polymers); 0 (Ionic Liquids); 0 (Membranes, Artificial); 0 (Protons); 39464-59-0 (perfluorosulfonic acid); IY9XDZ35W2 (Glucose)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170518
[Lr] Data última revisão:
170518
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170226
[St] Status:MEDLINE


  10 / 1655 MEDLINE  
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[PMID]:28117750
[Au] Autor:Liu H; Bian J; Wang Z; Hou CJ
[Ad] Endereço:Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China. liuhz418@163.com.
[Ti] Título:Synthesis and Characterization of Waterborne Fluoropolymers Prepared by the One-Step Semi-Continuous Emulsion Polymerization of Chlorotrifluoroethylene, Vinyl Acetate, Butyl Acrylate, Veova 10 and Acrylic Acid.
[So] Source:Molecules;22(1), 2017 Jan 22.
[Is] ISSN:1420-3049
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Waterborne fluoropolymer emulsions were synthesized using the one-step semi-continuous seed emulsion polymerization of chlorotrifluoroethylene (CTFE), vinyl acetate (VAc), -butyl acrylate (BA), Veova 10, and acrylic acid (AA). The main physical parameters of the polymer emulsions were tested and analyzed. Characteristics of the polymer films such as thermal stability, glass transition temperature, film-forming properties, and IR spectrum were studied. Meanwhile, the weatherability of fluoride coatings formulated by the waterborne fluoropolymer and other coatings were evaluated by the quick ultraviolet (QUV) accelerated weathering test, and the results showed that the fluoropolymer with more than 12% fluoride content possessed outstanding weather resistance. Moreover, scale-up and industrial-scale experiments of waterborne fluoropolymer emulsions were also performed and investigated.
[Mh] Termos MeSH primário: Acrilatos/química
Clorofluorcarbonetos/química
Ácidos Decanoicos/química
Polímeros de Fluorcarboneto/síntese química
Compostos de Vinila/química
[Mh] Termos MeSH secundário: Calorimetria
Emulsões/química
Polimerização
Espectroscopia de Infravermelho com Transformada de Fourier
Tempo (Meteorologia)
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acrylates); 0 (Chlorofluorocarbons); 0 (Decanoic Acids); 0 (Emulsions); 0 (Fluorocarbon Polymers); 0 (Vinyl Compounds); 705NM8U35V (n-butyl acrylate); AF215GW34G (chlorotrifluoroethylene); J94PBK7X8S (acrylic acid); L9MK238N77 (vinyl acetate)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170523
[Lr] Data última revisão:
170523
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170125
[St] Status:MEDLINE



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