Results 161 to 170 of about 5,731 (205)
Design of polybenzimidazolium membranes for use in vanadium redox flow batteries.
J Mater Chem A MaterDuburg JC +4 more
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Polybenzimidazoles. IV. Polybenzimidazoles containing aryl ether linkages
Journal of Polymer Science Part A: General Papers, 1965AbstractSome polybenzimidazole polymers which have aryl ether linkages between the recurring units have been prepared in order to study their thermal stability and their film‐ and fiber‐forming properties. All of the polymers prepared were soluble, high molecular weight materials with very good thermal stability.
Robbie T. Foster, C. S. Marvel
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Polybenzimidazoles. VI. Polybenzimidazoles containing aryl sulfone linkages
Journal of Polymer Science Part A-1: Polymer Chemistry, 1967AbstractFour new polybenzimidazoles with aryl sulfone linkages between the recurring units have been prepared in order to study their thermal stability and solubility properties. The polymers prepared were high molecular weight materials with good thermal stability.
T. V. Lakshmi Narayan, C. S. Marvel
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Journal of Polymer Science Part A: General Papers, 1963
AbstractA polybenzimidazole has been prepared from 3,3′‐diaminobenzidine and phthalic anhydride which has a high molecular weight and very good heat stability. Replacement of the hydrogen atoms on the nitrogen of the imidazole nuclei in a polybenzimidazole does not improve the heat stability as indicated by the properties of poly‐2,6‐(m‐phenylene)‐3,5 ...
Herward Vogel, C. S. Marvel
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AbstractA polybenzimidazole has been prepared from 3,3′‐diaminobenzidine and phthalic anhydride which has a high molecular weight and very good heat stability. Replacement of the hydrogen atoms on the nitrogen of the imidazole nuclei in a polybenzimidazole does not improve the heat stability as indicated by the properties of poly‐2,6‐(m‐phenylene)‐3,5 ...
Herward Vogel, C. S. Marvel
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Functionalised Polybenzimidazoles for PEMFC
ECS Meeting Abstracts, 2008Abstract not Available.
Péron, Jennifer +4 more
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Die Angewandte Makromolekulare Chemie, 1974
AbstractPoly‐[2,2′‐(m‐phenylene)‐5,5′‐bisbenzimidazole] (PBI) was originally developed as a fiber‐forming polymer for military applications. The eventually established intrinsic nonflammability (LOI 48%) and high moisture regain (13%) expanded application areas significantly; e.g., into protective suits.
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AbstractPoly‐[2,2′‐(m‐phenylene)‐5,5′‐bisbenzimidazole] (PBI) was originally developed as a fiber‐forming polymer for military applications. The eventually established intrinsic nonflammability (LOI 48%) and high moisture regain (13%) expanded application areas significantly; e.g., into protective suits.
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Journal of Polymer Science Part A: General Papers, 1964
AbstractPolybenzimidazoles have been prepared from 2,3‐, 2,7‐, and 2,6‐naphthalenedicarboxylic acids, 1,1′ ‐ferrocenedicarboxylic acid, maleic acid, fumaric acid, 4,5‐imidazole‐dicarboxylic acid, perfluoroglutaric acid, perfluorosuberic acid, and 3,3′ ‐diaminobenzidine. A copolymer has been prepared from a mixture of terephthalic acid and 2,2′‐diphenic
L. Plummer, C. S. Marvel
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AbstractPolybenzimidazoles have been prepared from 2,3‐, 2,7‐, and 2,6‐naphthalenedicarboxylic acids, 1,1′ ‐ferrocenedicarboxylic acid, maleic acid, fumaric acid, 4,5‐imidazole‐dicarboxylic acid, perfluoroglutaric acid, perfluorosuberic acid, and 3,3′ ‐diaminobenzidine. A copolymer has been prepared from a mixture of terephthalic acid and 2,2′‐diphenic
L. Plummer, C. S. Marvel
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Polybenzimidazoles. II. Polyalkylenebenzimidazoles
Die Makromolekulare Chemie, 1964AbstractPolyalkylenebenzimidazoles were prepared by solution polycondensation of 3,3′‐diaminobenzidine tetrahydrochloride with aliphatic dicarboxylic acids in polyphosphoric acid. Procedure used here was the same as that for polyphenylenebenzimidazoles reported previously.Their preparation and physical properties, such as a thermal stability ...
Yoshio Iwakura +2 more
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Methanol permeability and proton conductivity of polybenzimidazole and sulfonated polybenzimidazole
Polymer International, 2004Abstract The preparation of sulfonated polybenzimidazole (sPBI) by the grafting of (4‐bromomethyl) benzenesulfonate onto polybenzimidazole (PBI) has been investigated. The methanol permeability and proton conductivity of PBI and sPBI have been studied, and the effects of methanol concentration and temperature on ...
Hongting Pu, Qizhi Liu
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Polybenzimidazoles, new thermally stable polymers
Journal of Polymer Science, 1961AbstractWholly aromatic polybenzimidazoles were synthesized from aromatic tetraamines and difunctional aromatic acids and characterized as new thermally stable polymers. The melt polycondensation of aromatic tetraamines and the diphenyl esters of aromatic dicarboxylic acids was developed as a general procedure of wide applicability.
Herward Vogel, C. S. Marvel
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