Relevant bibliographies by topics / PBI membrane

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'PBI membrane'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "PBI membrane"

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Jiang, Junqiao, Erli Qu, Min Xiao, Dongmei Han, Shuanjin Wang, and Yuezhong Meng. "3D Network Structural Poly (Aryl Ether Ketone)-Polybenzimidazole Polymer for High-Temperature Proton Exchange Membrane Fuel Cells." Advances in Polymer Technology 2020 (August 14, 2020): 1–13. http://dx.doi.org/10.1155/2020/4563860.

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Poor mechanical property is a critical problem for phosphoric acid-doped high-temperature proton exchange membranes (HT-PEMs). In order to address this concern, in this work, a 3D network structural poly (aryl ether ketone)-polybenzimidazole (PAEK-cr-PBI) polymer electrolyte membrane was successfully synthesized through crosslinking reaction between poly (aryl ether ketone) with the pendant carboxyl group (PAEK-COOH) and amino-terminated polybenzimidazole (PBI-4NH2). PAEK-COOH with a poly (aryl ether ketone) backbone endows superior thermal, mechanical, and chemical stability, while PBI-4NH2 s
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Jheng, Li-Cheng, Cheng-Wei Cheng, Ko-Shan Ho, et al. "Dimethylimidazolium-Functionalized Polybenzimidazole and Its Organic–Inorganic Hybrid Membranes for Anion Exchange Membrane Fuel Cells." Polymers 13, no. 17 (2021): 2864. http://dx.doi.org/10.3390/polym13172864.

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A quaternized polybenzimidazole (PBI) membrane was synthesized by grafting a dimethylimidazolium end-capped side chain onto PBI. The organic–inorganic hybrid membrane of the quaternized PBI was prepared via a silane-induced crosslinking process with triethoxysilylpropyl dimethylimidazolium chloride. The chemical structure and membrane morphology were characterized using NMR, FTIR, TGA, SEM, EDX, AFM, SAXS, and XPS techniques. Compared with the pristine membrane of dimethylimidazolium-functionalized PBI, its hybrid membrane exhibited a lower swelling ratio, higher mechanical strength, and bette
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Yu, Tzyy-Lung Leon, and Hsiu-Li Lin. "Preparation of PBI/H3PO4-PTFE Composite Membranes for High Temperature Fuel Cells." Open Fuels & Energy Science Journal 3, no. 1 (2010): 1–7. http://dx.doi.org/10.2174/1876973x01003010001.

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The poly(benzimidazole) (PBI)/ poly(tetrafluoroethylene) (PTFE) composite membrane was prepared by impregnating a porous PTFE thin film in a PBI solution N,N’-dimethyl acetamide (DMAc) solution mixed with LiCl. LiCl was used as a stabilizer to avoid aggregations of PBI molecules in the DMAc solutions. In this paper, we report a 2 mg/ml PBI/ DMAc/ LiCl solution with a [LiCl]/[BI] molar ratio of ~8.0 (i.e. the LiCl/PBI is ~ 1.1 in wt ratio, where [BI] is the concentration of benzimidazole repeat unit in the solution) has a lowest PBI polymer aggregations and thus a lowest solutions viscosity. Th
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Cho, Hyeongrae, Henning Krieg, and Jochen Kerres. "Performances of Anion-Exchange Blend Membranes on Vanadium Redox Flow Batteries." Membranes 9, no. 2 (2019): 31. http://dx.doi.org/10.3390/membranes9020031.

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Anion exchange blend membranes (AEBMs) were prepared for use in Vanadium Redox Flow Batteries (VRFBs). These AEBMs consisted of 3 polymer components. Firstly, PBI-OO (nonfluorinated PBI) or F6-PBI (partially fluorinated PBI) were used as a matrix polymer. The second polymer, a bromomethylated PPO, was quaternized with 1,2,4,5-tetramethylimidazole (TMIm) which provided the anion exchange sites. Thirdly, a partially fluorinated polyether or a non-fluorinated poly (ether sulfone) was used as an ionical cross-linker. While the AEBMs were prepared with different combinations of the blend polymers,
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Meng, Chao, Sheng Huang, Dongmei Han, Shan Ren, Shuanjin Wang, and Min Xiao. "Semi-interpenetrating Network Membrane from Polyethyleneimine-Epoxy Resin and Polybenzimidazole for HT-PEM Fuel Cells." Advances in Polymer Technology 2020 (December 29, 2020): 1–8. http://dx.doi.org/10.1155/2020/3845982.

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In the present work, a semi-interpenetrating network (semi-IPN) high-temperature proton exchange membrane based on polyethyleneimine (PEI), epoxy resin (ER), and polybenzimidazole (PBI) was prepared and characterized, aiming at their future application in fuel cell devices. The physical properties of the semi-IPN membrane are characterized by thermogravimetric analysis (TGA) and tensile strength test. The results indicate that the as-prepared PEI-ER/PBI semi-IPN membranes possess excellent thermal stability and mechanical strength. After phosphoric acid (PA) doping treatment, the semi-IPN memb
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Zeng, L., T. S. Zhao, L. An, G. Zhao, and X. H. Yan. "A high-performance sandwiched-porous polybenzimidazole membrane with enhanced alkaline retention for anion exchange membrane fuel cells." Energy & Environmental Science 8, no. 9 (2015): 2768–74. http://dx.doi.org/10.1039/c5ee02047f.

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Polybenzimidazole (PBI)-based membrane electrode assemblies are fabricated with a sandwiched-porous PBI as the membrane and a new catalyst structure using PBI-decorated reduced graphene oxide as the supporting material for anion exchange membrane fuel cells.
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Yang, Jing Shuai, Xue Yuan Li, Yi Xin Xu, Quan Tong Che, Rong Huan He, and Qing Feng Li. "Polybenzimidazole Membranes Containing Benzimidazole Side Groups for High Temprature Polymer Electrolyte Membrane Fuel Cells." Advanced Materials Research 716 (July 2013): 310–13. http://dx.doi.org/10.4028/www.scientific.net/amr.716.310.

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Polybenzimidazole (PBI) with a high molecular weight of 69,000 was first synthesized. It was afterwards grafted with benzimidazole pendant groups on the backbones. The acid doped benzimidaozle grafted PBI membranes were investigated and characterized including fuel cell tests at elevated temperatures without humidification. At an acid doping level of 13.1 mol H3PO4 per average molar repeat unit, the PBI membranes with a benzimidazole grafting degree of 10.6% demonstrated a conductivity of 0.15 S cm-1 and a H2-air fuel cell peak power density of 378 mW cm-2 at 180 °C at ambient pressure without
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Seng, Leong Kok, Mohd Shahbudin Masdar, and Loh Kee Shyuan. "Ionic Liquid in Phosphoric Acid-Doped Polybenzimidazole (PA-PBI) as Electrolyte Membranes for PEM Fuel Cells: A Review." Membranes 11, no. 10 (2021): 728. http://dx.doi.org/10.3390/membranes11100728.

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Increasing world energy demand and the rapid depletion of fossil fuels has initiated explorations for sustainable and green energy sources. High-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) are viewed as promising materials in fuel cell technology due to several advantages, namely improved kinetic of both electrodes, higher tolerance for carbon monoxide (CO) and low crossover and wastage. Recent technology developments showed phosphoric acid-doped polybenzimidazole (PA-PBI) membranes most suitable for the production of polymer electrolyte membrane fuel cells (PEMFCs). Howeve
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Deng, Yuming, Gang Wang, Ming Ming Fei, et al. "A polybenzimidazole/graphite oxide based three layer membrane for intermediate temperature polymer electrolyte membrane fuel cells." RSC Advances 6, no. 76 (2016): 72224–29. http://dx.doi.org/10.1039/c6ra11307a.

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PBI/GO/PBI composite membrane exhibited acceptable proton conductivity and fuel cell performance at 150 °C. The graphite oxide as proton conductor layer enhanced the mechanical strength and reduced the swelling ratio of electrolyte at intermediate temperature.
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Lee, Sangrae, Ki-Ho Nam, Kwangwon Seo, Gunhwi Kim, and Haksoo Han. "Phase Inversion-Induced Porous Polybenzimidazole Fuel Cell Membranes: An Efficient Architecture for High-Temperature Water-Free Proton Transport." Polymers 12, no. 7 (2020): 1604. http://dx.doi.org/10.3390/polym12071604.

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To cope with the demand for cleaner alternative energy, polymer electrolyte membrane fuel cells (PEMFCs) have received significant research attention owing to their high-power density, high fuel efficiency, and low polluting by-product. However, the water requirement of these cells has necessitated research on systems that do not require water and/or use other mediums with higher boiling points. In this work, a highly porous meta-polybenzimidazole (m-PBI) membrane was fabricated through the non-solvent induced phase inversion technique and thermal cross-linking for high-temperature PEMFC (HT-P
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Dissertations / Theses on the topic "PBI membrane"

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Kreisz, Aurélien. "Membranes PBI pour pile à combustible haute température." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT224.

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Cette thèse débute par une courte introduction traitant des principes et de l'état de l'art des PEMFC dans le but de situer le contexte des travaux. Le but des travaux présentés dans ce manuscrit est de développer une nouvelle méthode de préparation de membrane pour les piles à combustible haute température (> 120 °C). Le polybenzimidazole dopé à l'acide phosphorique est devenu la référence des PEM haute température. Un degré de dopage élevé est essentiel pour minimiser les pertes ohmiques dans la cellule. Malheureusement un degré de dopage élevé entraine aussi une plastification de la memb
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Suarez, Matthew. "The Effect of Membrane Thickness on the Performance of PBI-Based High-Temperature Direct Methanol Fuel Cells." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-theses/1131.

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"This project investigates the effect of membrane thickness on the performance and durability of a Direct Methanol Fuel Cell (DMFC) using a commercially available Celtec®P-1000 PBI-based membrane electrode assembly (MEA). The PBI-based membranes tested were the 100µm, the standard thickness, 200µm and 250µm thick. With various methanol feed concentrations and cathode feeds, oxygen and air, the PBI-based MEAs were operated between 160 and 180°C with vaporized methanol feed. Results showed that the DMFC performance increased with temperature and with PBI membrane thickness. The optimal concent
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Gomes, Carlos André Mendonça. "Study of multi-component systems in polybenzimidazole membrane formation and their impact on membrane performance." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10651.

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Dissertação para obtenção do Grau de Mestre em Engenharia Química e Bioquímica<br>Integrally skinned asymmetric polybenzimidazole (PBI) membranes suitable for organic solvent nanofiltration (OSN) were prepared via phase inversion and several changes were implemented in the dope solutions in order to control their molecular weight cut-off (MWCO). Initially, uncrosslinked membranes with different polymer concentrations were tested to investigate their impact on membrane performance. On a second approach, several co-solvents were added in the dope solutions of PBI membranes. Coupling this meth
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Barrientos, Wilner Valenzuela. "Estudo dos parâmetros operacionais de uma célula a combustível de glicerol direto utilizando uma membrana de polibencimidazol impregnada com ácido fosfórico (PBI/H3PO4) ou 1-hexil-3-metilimidazol trifluorometanosulfo." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-15092015-135733/.

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Com o aumento da população mundial, o desenvolvimento de novas fontes e conversores de energia tornou-se uma necessidade. As células a combustível mostram-se como uma alternativa viável devido principalmente a duas razões, sua alta eficiência e a utilização de combustíveis renováveis. No presente trabalho se estuda a influência da temperatura de operação e o conteúdo de álcali no combustível sobre a densidade de potencia para uma célula a combustível de glicerol direto. Como combustível foi utilizado uma solução de glicerol:KOH (1M:xM, x=0, 1, 3, 5), como membranas foram utilizados filmes de p
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Lee, Jeong Kyu. "Direct Methanol Fuel Cell Membranes from Polymer Blends." Case Western Reserve University School of Graduate Studies / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=case1134316195.

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Basdemir, Merve. "Development Of Pbi Based Membranes For H2/co2 Separation." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615473/index.pdf.

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Recent developments have confirmed that in the future hydrogen demand in industrial applications will arise because of the growing requirements for H2 in chemical manufacturing, petroleum refining, and the newly emerging clean energy concepts. Hydrogen is mainly produced from the steam reforming of natural gas and water gas shift reactions. The major products of these processes are hydrogen and carbon dioxide. The selective removal of CO2 from the product gas is important because it poisons catalysts in the reactor and it is highly corrosive. Membrane separation processes for hydrogen purific
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Schoeman, Johannes Gerhardus. "H2SO4 stability of PBI–blend membranes for SO2 electrolysis Schoeman / H." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7567.

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Alternative energy sources are needed if the current use of energy is to be sustained while reducing global warming. A possible alternative energy source that has significant potential is hydrogen. For hydrogen to become a serious contender for replacing fossil fuels, the production thereof has to be further investigated. One such process, the membrane–based Hybrid Sulphur (HyS) process, where hydrogen is produced from the electrolysis of SO2, has received considerable interest recently. Since H2SO4 is formed during SO2 electrolysis, H2SO4 stability is a prerequisite for any membrane to be use
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Freitas, Mauricio Azevedo de. "Poli(indeno) fosfonado : síntese, propriedades e uso como eletrólito em membranas a base de PBI." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/181807.

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Neste trabalho, um polímero eletrólito derivado do poli(indeno) (PInd) foi desenvolvido como componente de membranas poliméricas a base de polibenzimidazol (PBI) para célula a combustível de média temperatura. Foi investigado o método de síntese, envolvendo a reação de fosfonação pelo método de Friedel-Crafts assistido por catalisador ácido de Lewis AlCl3. O polímero poli(indeno) fosfonado (PPInd) foi comparado com seu análogo sulfonado, o poli(indeno) sulfonado (SPInd), e usados nas blendas com 5, 7,5 e 10% em peso com o PBI. Os polímeros precursores foram caracterizados por espectroscopia de
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Petek, Tyler Joseph. "An Investigation of PBI/PA Membranes for Application in Pump Cells for the Purification and Pressurization of Hydrogen." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1320704555.

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Fattori, Enrico. "Membrane elettrofilate ibride a base di PBS e cheratina per il rilascio controllato di farmaci." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18569/.

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Grazie agli sviluppi delle nanotecnologie biomedicali nell’ambito del rilascio controllato di farmaci, sta diventando sempre più concreta la possibilità di superare i principali limiti della medicina tradizionale, basata su somministrazioni frequenti e ripetute di quantità di principio attivo anche superiori rispetto a quelle necessarie, e che dopo poco tempo raggiungono livelli al di sotto della soglia di efficacia. Tramite lo studio dei biomateriali e delle loro proprietà è possibile realizzare soluzioni ad hoc per il rilascio mirato di farmaco nel sito in cui è richiesta la terapia, con cin
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Books on the topic "PBI membrane"

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Abhishek, Abhishek, and Michael Doherty. Pathophysiology of calcium pyrophosphate deposition. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199668847.003.0049.

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Calcium pyrophosphate (CPP) dihydrate crystals form extracellularly. Their formation requires sufficient extracellular inorganic pyrophosphate (ePPi), calcium, and pro-nucleating factors. As inorganic pyrophosphate (PPi) cannot cross cell membranes passively due to its large size, ePPi results either from hydrolysis of extracellular ATP by the enzyme ectonucleotide pyrophosphatase/phosphodiesterase 1 (also known as plasma cell membrane glycoprotein 1) or from the transcellular transport of PPi by ANKH. ePPi is hydrolyzed to phosphate (Pi) by tissue non-specific alkaline phosphatase. The level
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Murer, Heini, Jürg Biber, and Carsten A. Wagner. Phosphate homeostasis. Edited by Robert Unwin. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199592548.003.0025.

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Inorganic phosphate ions (H2PO4−/ HPO42−) (abbreviated as Pi) are involved in formation of bone and generation of high-energy bonds (e.g. ATP), metabolic pathways, and regulation of cellular functions. In addition, Pi is a component of biological membranes and nucleic acids. Only about 1% of total body Pi content is present in extracellular fluids, at a plasma concentration in adults within the range 0.8–1.4 mMol/L (at pH 7.4 mostly as HPO42−), with diurnal variations of approximately 0.2 mM. A small amount of plasma Pi is bound to proteins or forms complexes with calcium. Under normal, balanc
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Jancura, Daniel, and Erik Sedlák. Bioenergetika. Univerzita Pavla Jozefa Šafárika, Vydavateľstvo ŠafárikPress, 2021. http://dx.doi.org/10.33542/be2021-0022-6.

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Prekladaný vysokoškolský učebný text „Bioenergetika“ by mal slúžiť ako úvod do problematiky štúdia v oblasti bioenergetiky. Táto vedná oblast je v súčasnosti vysoko aktuálna, pretože výsledky získané bioenergetickým výskumom v uplynulých rokoch zreteľne ukazujú, že bioenergetické procesy prebiehajúce v živých systémoch neslúžia “len” na transformáciu energie, ale ovplyvňujú aj priebeh procesov ako sú apoptóza, starnutie, vznik a rozvoj mnohých ochorení (predovšetkým neurodegeneratívnych). Tieto skutočnosti jednoznačne naznačujú potrebu existencie kvalitných učebných textov, ktoré by prijateľný
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Book chapters on the topic "PBI membrane"

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Linares, José J., Liliane C. Battirola, and Justo Lobato. "PBI-Based Composite Membranes." In High Temperature Polymer Electrolyte Membrane Fuel Cells. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-17082-4_13.

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Henkensmeier, Dirk, and David Aili. "Techniques for PBI Membrane Characterization." In High Temperature Polymer Electrolyte Membrane Fuel Cells. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-17082-4_6.

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Fishel, Kayley, Guoqing Qian, and Brian C. Benicewicz. "PBI Membranes Via the PPA Process." In High Temperature Polymer Electrolyte Membrane Fuel Cells. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-17082-4_10.

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Jakobsen, Mark Tonny Dalsgaard, Jens Oluf Jensen, Lars Nilausen Cleemann, and Qingfeng Li. "Durability Issues and Status of PBI-Based Fuel Cells." In High Temperature Polymer Electrolyte Membrane Fuel Cells. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-17082-4_22.

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Siegel, Christian, Sebastian Lang, Ed Fontes, and Peter Beckhaus. "Approaches for the Modeling of PBI/H3PO4 Based HT-PEM Fuel Cells." In High Temperature Polymer Electrolyte Membrane Fuel Cells. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-17082-4_18.

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Baum, H., and M. Fusconi. "The Antimitochondrial Antibodies (AMA) of Primary Biliary Cirrhosis (PBC)." In Molecular Basis of Membrane-Associated Diseases. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74415-0_27.

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Verma, D. P. S., C. I. Cheon, N. G. Lee, Z. Hong, and G. H. Miao. "Biogenesis of Peribacteroid Membrane (PBM) Forming a Subcellular Compartment Essential for Symbiotic Nitrogen Fixation." In New Horizons in Nitrogen Fixation. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-017-2416-6_29.

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Grubinko, Vasil V., Angela I. Lutsiv, and Katherina V. Kostyuk. "Structural Reconstruction of a Membrane at Absorption of MN2+, ZN2+, CU2+, and PB2+ with Green Algae Chlorella Vulgaris Beij." In Heavy Metals and Other Pollutants in the Environment. Apple Academic Press, 2017. http://dx.doi.org/10.1201/9781315366029-14.

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Khan, Umraz, Graeme Perks, Rhidian Morgan-Jones, et al. "Case histories." In Pathways in Prosthetic Joint Infection. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198791881.003.0009.

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This chapter provides several typical cases encountered in patients who develop infection in prosthetic joints after surgery. Both the assessment and the definitive management are considered, as well as the microbiology profiles and the need for protracted antibiotics. The aim is that the decision-making process is enhanced. Although the treatment pathways are specific to those cases outlined, the surgical principles should remain constant for all cases. Comprehensive membrane resection remains a key event when surgically eradicating prosthetic joint infection (PJI). This act improves with experience. To improve outcomes for cases of PJI we encourage data collection within networks.
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Becker, Richard C., and Frederick A. Spencer. "Platelet Antagonists." In Fibrinolytic and Antithrombotic Therapy. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195155648.003.0039.

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Antithrombotic and fibrinolytic drugs impair normal hemostasis and, as a result, increase the risk for hemorrhage. It is important to consider that many treatment strategies include agents of differing classes (platelet antagonists, anticoagulants, fibrinolytics) and categories (aspirin, clopidogrel, glycoprotein [GP] IIb/IIIa receptor antagonists), creating a multisite and/or hemostatic phase defect. Platelet antagonists, by impairing primary hemostasis, are associated most often with hemorrhage involving the skin and mucous membranes; however, the gastrointestinal and genitourinary tracts may occasionally be involved. Fixed-dose unfractionated heparin (UFH) therapy is a modifiable risk factor associated with hemorrhage in patients receiving GPIIb/IIIa receptor antagonists. The Evaluation of c7E3 Fab in Preventing Ischemic Complications of High-Risk Angioplasty (EPIC) trial was a prospective, randomized, placebo-controlled trial examining the efficacy of treatment with abciximab (EPIC Investigators, 1994). A total of 2,099 patients were scheduled for coronary angioplasty or direct atherectomy and were considered to be at high risk for abrupt closure. The primary composite endpoint of the study at 30 days was death from any cause, nonfatal myocardial infarction (MI), coronary artery bypass grafting (CABG) or repeat percutaneous coronary intervention (PCI), or placement of an intraaortic balloon pump to relieve refractory ischemia. All patients received therapy with 325 mg of aspirin and bolus dosing of UFH between 10,000 and 12,000 U followed by additional boluses of 3,000 U every 15 minutes to maintain an activated clotting time (ACT) between 300 and 350 seconds. Patients were randomized to receive either abciximab 0.25 mg/kg as a bolus followed by placebo infusion, or a placebo bolus and infusion. A significant increase in the incidence of major hemorrhage was demonstrated in patients receiving abciximab bolus and infusion compared to placebo bolus and infusion. A total of 14% of patients receiving abciximab bolus and infusion experienced a major bleeding complication as compared to 7% in the placebo bolus and infusion group (p = .001). Analysis of major hemorrhage in patients treated with abciximab bolus and infusion as a function of UFH dose revealed a dose-dependent increased risk.
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Conference papers on the topic "PBI membrane"

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Lin, Hsiu-Li, Chih-Ren Hu, Po-Hao Su, Yu-Cheng Chou, and Che-Yu Lin. "Proton Exchange Membranes Based on Blends of Poly(Benzimidazole) and Butylsulfonated Poly(Beznimidazole) for High Temperature PEMFC." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33031.

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Phosphoric acid doped poly(benzimidazole) (PBI) is one of excellent candidates of proton exchange membranes for high temperature (150–180°C) proton exchange membrane fuel cells (PEMFCs). However, the strong inter-polymer hydrogen bonds cause low elongation and brittleness of PBI membranes. In this work, we synthesize poly(benzimidazole) (PBI) and butylsulfonated poly(benzimidazole) (PBI-BS), in which around 22 mole% of imidazole –NH groups of PBI are grafted with sulfonated butyl groups. We show the elongation, phosphoric acid doping level, and proton conductivity of PBI can be improved by ble
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Yu, Tzyy-Lung Leon, Shih-Hao Liu, Hsiu-Li Lin, and Po-Hao Su. "Nafion/PBI Nanofiber Composite Membranes for Fuel Cells Applications." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33025.

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The PBI (poly(benzimidazole)) nano-fiber thin film with thickness of 18–30 μm is prepared by electro-spinning from a 20 wt% PBI/DMAc (N, N′-dimethyl acetamide) solution. The PBI nano-fiber thin film is then treated with a glutaraldehyde liquid for 24h at room temperature to proceed chemical crosslink reaction. The crosslink PBI nano-fiber thin film is then immersed in Nafion solutions to prepare Nafion/PBI nano-fiber composite membranes (thickness 22–34 μm). The morphology of the composite membranes is observed using a scanning electron microscope (SEM). The mechanical properties, conductivity
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Das, Susanta K., and K. J. Berry. "Synthesis and Performance Evaluation of an S-POSS Based PBI Electrolyte for High Temperature PEM Fuel Cell Applications." In ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2016 Power Conference and the ASME 2016 10th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fuelcell2016-59214.

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In this paper, using patented nano-additive based polymer synthesis technology, a novel approach to the design and fabrication of high temperature proton exchange membrane (PEM) has been developed. The presence of sulfonated octaphenyl POSS (S-POSS) in a PBI-PA (polybenzimidazole-phosphoric acid) membrane results in a 40–50% increase in conductivity at 120–200$deg relative to non-sulfonated silica or POSS control fillers at comparable weight percent filler loadings and PBI molecular masses, and also relative to unfilled PBI-PA membranes. In addition, the presence of S-POSS and silica both resu
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Bharath, Sudharsan. "Low-Temperature Direct Propane Polymer Electrolyte Membrane Fuel Cell (DPFC)." In ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2006. http://dx.doi.org/10.1115/fuelcell2006-97001.

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The low-temperature Direct Propane Polymer Electrolyte Membrane Fuel Cell (DPFC) based on low-cost modified membranes was demonstrated for the first time. The propane is fed into the fuel cell directly without the need for reforming. A PBI membrane doped with acid and a Nafion 117 membrane modified or non-modified with silicotungstic acid were used as the polymer membranes. The anode was based on Pt, Pt-Ru or Pt/CrO3 electro catalysts and the cathode was based on a Pt electro catalyst. For non-optimized fuel cells based on H2SO4 doped PBI membranes and Pt/CrO3 anode, the open circuit potential
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Shi, Zhongying, and Xia Wang. "Three Dimensional Non-Isothermal Model of a High Temperature PEM Fuel Cell." In ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2009. http://dx.doi.org/10.1115/fuelcell2009-85082.

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The proton exchange membrane (PEM) fuel cell using a polybenzimidazole (PBI) membrane operates between 120 °C and 180 °C, higher than the PEM fuel cell with a Nafion based membrane (lower than 80°C). Few studies have been conducted in the theoretical modeling of the PEM fuel cell with a PBI membrane. Experimental results have shown that the conductivity of a PBI membrane is affected by the phosphoric acid doping level, the cell operating temperature and the relative humidity. The fuel cell performance is thus affected by these parameters as well. The objective of this paper is to develop a thr
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Cheddie, Denver F., and Norman D. H. Munroe. "Computational Modeling of PEM Fuel Cells With PBI Membranes." In ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2006. http://dx.doi.org/10.1115/fuelcell2006-97127.

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A parametric model of a proton exchange membrane fuel cell (PEMFC) operating with a polybenzimidazole (PBI) membrane is presented. The model is three dimensional and applicable for PEMFCs operating at intermediate temperatures (120–150 °C). It accounts for all transport and polarization phenomena, and the results compare well with published experimental data for equivalent operating conditions. Results for oxygen concentration and temperature variations are presented. The model predicts the oxygen depletion, which occurs in the catalyst area under the ribs, and which gives an indication of the
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Bhamidipati, Kanthi Latha, and Tequila A. L. Harris. "Numerical Analysis of the Effects of Processing Conditions on the Casting of High Temperature PEMFC Membrane Solutions." In ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2009. http://dx.doi.org/10.1115/fuelcell2009-85064.

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Polymer Electrolyte Membranes have numerous failure modes resulting from chemical, mechanical and thermal influences. The conventional state–of–the–art low temperature Nafion® membrane is susceptible to such failures due to its sensitivity to high temperatures and the presence of carbon monoxide (CO) in the reactant streams, which poisons the platinum catalyst at low temperatures. To circumvent these problems, novel, cost-effective membranes that operate at high temperatures (&gt;120°C) and low humidity levels, such as phosphoric acid doped polybenzimidazole (PBI/PA) membranes, have been devel
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Krishnan, Lakshmi, Todd Snelson, Ray Puffer, and Daniel Walczyk. "Durability studies of PBI-based membrane elect rode assemblies for high temperature PEMFCs." In 2010 IEEE International Conference on Automation Science and Engineering (CASE 2010). IEEE, 2010. http://dx.doi.org/10.1109/coase.2010.5584497.

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Share, Dylan, Lakshmi Krishnan, David Lesperence, Daniel Walczyk, and Raymond Puffer. "Cold Pressing of Membrane Electrode Assemblies for High-Temperature PEM Fuel Cells." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33230.

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With the current economic and environmental situation, the development of affordable and clean energy sources is receiving much attention. One leading area of promise is PEM fuel cells. Presently, manufacture of high temperature Polybenzimidizole (PBI) based PEM Membrane Electrode Assemblies (MEAs) is usually performed by sealing in a thermal press. A typical sealing process requires heated tooling to press electrode-subgasket assemblies into a sol-gel PBI membrane. MEAs designed for transportation purposes have a large active area that requires expensive heated tooling, which in turn requires
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Ubong, Etim U., Diana Phillips, and Matt Gieseke. "Regeneration of Pt Electrode Activity in H3PO4/PBI Doped PEMFC Membrane Following CO Poisoning." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33333.

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An investigation has been made on a high temperature polybenzimidazole (PBI) proton exchange membrane doped with phosphoric acid. Two and five percent concentrations of CO in the hydrogen were evaluated to determine the effect of high CO concentrations on the performance of the PBI membrane under conditions that are representative of reformed fuels. A 3 × 3 matrix of fuel composition, temperature and air stoichiometry was studied at two pressures: one atmosphere and one bar gage. A controlled experiment using hydrogen of 99.997% purity was used as a baseline fuel before and after the exposure
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Reports on the topic "PBI membrane"

1

Vogel, John, and Katrina Fritz Intwala. Demonstration of Next-Generation PEM CHP Systems for Global Markets Using PBI Membrane Technology. Office of Scientific and Technical Information (OSTI), 2009. http://dx.doi.org/10.2172/1097545.

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Krishnan, Gopala N., Kathryn A. Berchtold, Indira Jayaweera, et al. Fabrication and Scale-up of Polybenzimidazole (PBI) Membrane Based System for Precombustion- Based Capture of Carbon Dioxide. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1073750.

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Krishnan, Gopala, Indira Jayaweera, Angel Sanjrujo, et al. Fabrication and Scale-up of Polybenzimidazole (PBI) Membrane Based System for Precombustion-Based Capture of Carbon Dioxide. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1050227.

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Jayaweera, Indira, and Palitha Jayaweera. Development of a Pre-combustion CO2 Capture Process Using High-Temperature PBI Hollow-Fiber Membranes. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1569766.

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