Results 81 to 90 of about 3,151 (181)

Electrospun nanofibers : an alternative sorbent material for solid phase extraction [PDF]

open access: yes, 2012
The work described in the thesis seeks to lay a foundation for a better understanding of the use of electrospun nanofibers as a sorbent material. Three miniaturised electrospun nanofiber based solid phase extraction devices were fabricated. For the first
Chigome, Samuel, Samuel Chigome
core   +1 more source

Bipolar membranes with fluid distribution passages [PDF]

open access: yes, 1999
The present invention provides a bipolar membrane and methods for making and using the membrane. The bipolar membrane comprises a cation-selective region, an anion-selective region, an interfacial region between the anion-selective region and the cation ...
Archer, Shivaun   +4 more
core   +1 more source

Method of making formulated plastic separators for soluble electrode cells [PDF]

open access: yes, 1982
A method making a membrane comprised of a hydrochloric acid-insoluble sheet of a mixture of a rubber and a powdered ion transport material is disclosed. The sheet can be present as a coating upon a flexible and porous substrate.
Sheibley, D. W.
core   +1 more source

Ion-exchange hollow fibers [PDF]

open access: yes, 1976
An ion-exchange hollow fiber is prepared by introducing into the wall of the fiber polymerizable liquid monomers, and polymerizing the monomers therein to form solid, insoluble, crosslinked, ion-exchange resin particles which embed in the wall of the ...
Klein, E., Rembaum, A., Yen, S. P. S.
core   +1 more source

Preparation of Anion Exchange Resins Derived from Styrene-Divinylbenzene Copolymers

open access: yesThe Journal of the Society of Chemical Industry, Japan, 1958
スチレン- ジビニルベンゼン球状共重合体塩化第ニスズを触媒としクロルメチルエーテルで処理し, 芳香核にほぼ1個のクロルメチル基を導入した後20数種のアミンでアミノ化し, 塩基性の異なる陰イオン交換樹脂を合成した。弱塩基性樹脂では,ポリエチレンポリアミン系のものが最もよく, また強塩基性樹脂では, トリメチルアミン, ジメチルエタノールアミン, トリエタノールアミンがよい。アミノ化に対する膨潤剤の影響は大きく, 膨潤剤を使用しない場合には, アミノ化は架橋度が5%でも困難で適切な膨潤剤の選定がよい性能の樹脂をうるために必要である。
Mizuho Sugihara   +2 more
openaire   +2 more sources

Development of anion-selective membranes [PDF]

open access: yes
Methods were studied of preparing anion-exchange membranes that would have low resistance, high selectivity, and physical and chemical stability when used in acidic media in a redox energy storage system.
Cowsar, D. R., Lacey, R. E.
core   +1 more source

Membrane consisting of polyquaternary amine ion exchange polymer network interpenetrating the chains of thermoplastic matrix polymer [PDF]

open access: yes, 1978
An ion exchange membrane was formed from a solution containing dissolved matrix polymer and a set of monomers which are capable of reacting to form a polyquaternary ion exchange material; for example vinyl pyride and a dihalo hydrocarbon.
Rembaum, A., Wallace, C. J.
core   +1 more source

SEC/MALLS measurement of the branched structure of methyl methacrylate + ethylene glycol dimethacrylate copolymers synthesized by atom transfer radical polymerization [PDF]

open access: yes, 2008
In the last few years, atom transfer radical polymerization (ATRP) of acrylate and methacrylate monomers in the presence of a small amount of cross-linker has been investigated in order to produce branched polymers and gels with applications in ...
Costa, Mário Rui   +3 more
core  

Self-healing elastomer system [PDF]

open access: yes, 2009
A composite material includes an elastomer matrix, a set of first capsules containing a polymerizer, and a set of second capsules containing a corresponding activator for the polymerizer. The polymerizer may be a polymerizer for an elastomer.
Keller, Michael W.   +2 more
core   +1 more source

SYNTHESIS OF STAR POLY(4-VINYLPYRIDINE) ARCHITECTURE BY NITROXIDE MEDIATED POLYMERISATION [PDF]

open access: yes, 2014
This study proposed multifunctional alkoxyamine 2-({tert-butyl [[1- (diethoxyphosphoryl)-2,2-dimethylpropyl]amino}oxy)-2-methylpropanoic acid (MAMA-SG1) initiators for the ‘grafting-from’ method to obtain star architecture of poly 4-vinylpyridine ...
Andreas, Heise   +3 more
core  

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