Results 91 to 100 of about 5,752 (206)

Effects of sulfonation process on thermal behavior and microstructure of sulfonated polysulfone membranes as a material for Proton Exchange Membrane (PEM) [PDF]

, 2004
This paper reports the effect of sulfonation processon thermal behavior and microstrucutre of sulfonated polysulfone membrane. Various degree of sulfonation reactin has been conducted and the sulfonated membranes were characterized by thermal gravimetric
Ismail, A. F., Naim, R., Saidi, H.
core  

Synthesis of chemically resistant polybenzimidazole membrane via green phosphoric acid crosslinking for efficient separation of selective flavonoids from citrus waste

International Journal of Smart and Nano Materials
This study introduces a chemically resilient Polybenzimidazole (PBI) thin-film composite membrane for organic solvent nanofiltration (OSN) based flavonoid fractionation of citrus waste, employing Phosphoric Acid (PA) as a mild, versatile, and low cost ...
Imesha Samarathunga, G. S. M. D. P. Sethunga, Jayantha Epaarachchi, Madhubhashitha Herath, S.G.J. Perera, Ash Exner, Raj Das   +6 more
doaj   +1 more source

Fire-resistant materials for aircraft passenger seat construction [PDF]

The thermal response characteristics of fabric and fabric-foam assemblies are described. The various aspects of the ignition behavior of contemporary aircraft passenger seat upholstery fabric materials relative to fabric materials made from thermally ...
Fewell, L. L., Kourtides, D. A., Moussa, A., Tesoro, G. C.   +3 more
core   +1 more source

Investigation of resin systems for improved ablative materials Final report, 19 Jun. 1964 - 31 Jul. 1965 [PDF]

Resin systems investigated for improving ablative materials for use with fluorine-containing liquid propellant ...
Burns, E. A., Dubrow, B., Lubowitz, H. R.   +2 more
core   +1 more source

Index to NASA Tech Briefs, 1975 [PDF]

, 1976
This index contains abstracts and four indexes--subject, personal author, originating Center, and Tech Brief number--for 1975 Tech ...

core   +1 more source

Polybenzimidazole (PBI) fibers

, 2014
Polybenzimidazole (PBI) fibers are produced from polybenzimidazole polymer which has a high thermal and chemical strength with a long chain aromatic structure. These fibers are first used in protective technical textile products due to their good moisture regain and textile performance properties like good hand and drape.
Kalaycı, Ece, Avinç, O., Yavaş, Arzu
openaire   +5 more sources

Green Synthesized Composite AB-Polybenzimidazole/TiO₂ Membranes with Photocatalytic and Antibacterial Activity

Crystals
Novel AB-Polybenzimidazole (AB-PBI)/TiO2 nanocomposite membranes have been prepared using a synthetic green chemistry approach. Modified Eaton’s reagent (methansulfonic acid/P2O5) was used as both reaction media for microwave-assisted synthesis of AB-PBI
Hristo Penchev, Katerina Zaharieva, Silvia Dimova, Ivelina Tsacheva, Rumyana Eneva, Stephan Engibarov, Irina Lazarkevich, Tsvetelina Paunova-Krasteva, Maria Shipochka, Ralitsa Mladenova, Ognian Dimitrov, Daniela Stoyanova, Irina Stambolova   +12 more
doaj   +1 more source

Phosphoric Acid‐Immobilized Polybenzimidazole Hybrid Membranes with TiO2 Nanowires for High‐Temperature Polymer Electrolyte Membrane Fuel Cells

ChemElectroChem
Polymer electrolyte membrane fuel cells (PEMFCs) have attracted significant attention as next‐generation clean compact power sources. In this study phosphoric‐acid‐doped polybenzimidazole (PBI) membranes with added itanium dioxide nanowires are prepared ...
Ryo Kato, Yuki Nakamura, Keiichiro Maegawa, Reiko Matsuda, Masayo Takahashi, Satoshi Obokata, Kazuhiro Hikima, Atsunori Matsuda   +7 more
doaj   +1 more source

Construction of sulfonated branched polybenzimidazole membranes for application in all-vanadium flow battery

Cailiao gongcheng
The sulfonated branched polybenzimidazole （sb-PBI） membranes with theoretical sulfonation degrees of 30%，40%，50%，and 60% are prepared by reacting between synthesized branched polybenzimidazole and 1，4-butane sultone for application in all-vanadium flow ...
LI Huiting, LIU Xiyang, LONG Jun, HUANG Wenheng, LI Jinchao, CHEN Liang, CHEN Qin, ZHANG Yaping   +7 more
doaj   +1 more source

Preliminary investigation of ablative material response to high-intensity CO2 laser radiation [PDF]

Performance tests for ablative materials subjected to high intensity carbon dioxide laser ...
Brewer, W. D.
core   +1 more source