Results 71 to 80 of about 752 (186)

Heat disinfection of polysulfone hemodialyzers

open access: yesKidney International, 1995
Reprocessing of hemodialyzers has been a clinical practice since the beginning of chronic hemodialysis therapy in the 1960's. This practice was performed initially with Kiil dialyzers for time efficiency as well as cost of the membranes [1]. When the hollow fiber dialyzer was developed at San Francisco General Hospital in the late 1960's by Gotch et al
Schoenfeld, Patricia   +2 more
openaire   +2 more sources

Polysulfones with highly localized imidazolium groups for anion exchange membranes [PDF]

open access: yes, 2015
In order to promote phase separation and properties of anion-exchange membranes (AEMs)we have prepared polysulfones with an exceptionally high local concentration of imidazolium groups.
Weiber, Annika, Jannasch, Patric
core   +1 more source

Synthesis, characterization and thermally activated curing of polysulfones with benzoxazine end groups [PDF]

open access: yes, 2011
Polysulfones with benzoxazine end groups (PSU-B-a) were obtained using monomer synthesis method from the phenol terminated polysulfone (PSU-OH), aniline and paraformaldehyde as starting materials.
Kiskan, Bans   +11 more
core   +1 more source

Synthesis and characterization of carboxylated polysulfones

open access: yesBritish Polymer Journal, 1990
AbstractPolysulfone has been carboxylated, via a metalated intermediate, by reaction of a THF solution of polymer with n‐butyllithium and then treatment with carbon dioxide. The polymer reactions with n‐butyllithium were close to quantitative and did not require the use of a tertiary amine catalyst. A series of polymers ranging from 0.2 to 1.9 carboxyl
Guiver, Michael   +3 more
openaire   +2 more sources

EVALUATION OF MAIN-CHAIN CROSSLINKING AND SCISSION IN AROMATIC POLYSULFONES. [PDF]

open access: yes, 1985
The rates of crosslinking and scission during degradation of polymers can be determined from the decrease in the fraction of soluble polymer beyond the gel point, where some of the polymer forms a macro network. The authors have developed an experimental
O'Donnell J.H., Lewis D.A.
core  

Sulfonation of polysulfones: Suitability of the sulfonated materials for asymmetric membrane preparation [PDF]

open access: yes, 2002
International audienceAbstract The effect of the starting polymer on the reaction of sulfonation of polysulfones was investigated. When concentrated sulfuric acid is used as the sulfonation reagent in an organic solvent‐free reaction, a polymer ...
Q. T. Nguyen   +5 more
core   +1 more source

Gas transport and dynamic mechanical behavior in modified polysulfones with trimethylsilyl groups: effect of degree of substitution [PDF]

open access: yes, 2003
Trimethylsilyl (TMS) groups were introduced with controlled degree of substitution (DS) onto the phenylene rings of various polysulfones. The introduction of TMS groups resulted in a marked increase in oxygen permeabilities with small concurrent ...
Lee, Kwi Jong   +6 more
core   +1 more source

Membranes fibres creuses innovantes: conception, elaboration, applications [PDF]

open access: yes, 2012
Cette HDR est longue, 105 pages pour le texte seul. J'ai voulu écrire un texte qui, d'une part, reprend mes principaux travaux alors que j'ai soutenu ma thèse il y a 17 ans et qui, d'autre part, fait le lien entre les diverses thèses consacrées par ...
Remigy, Jean-Christophe
core  

Thermodynamic properties in quaternized polysulfones/neutral polymer/solvent complex systems [PDF]

open access: yes, 2017
Theoretical and experimental aspects concerning the interactions generated via electrostatic interactions and hydrogen-bonding in quaternized polysulfones/neutral polymer/solvent complex ternary systems are investigated.
Dobos Adina Maria   +2 more
core  

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